1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /* |
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5 | * ABSTRACT: numbers (integers) |
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6 | */ |
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7 | |
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8 | #include "misc/auxiliary.h" |
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9 | |
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10 | #include "factory/factory.h" |
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11 | |
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12 | #include "misc/mylimits.h" |
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13 | #include "reporter/reporter.h" |
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14 | |
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15 | #include "coeffs/coeffs.h" |
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16 | #include "coeffs/longrat.h" |
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17 | #include "coeffs/numbers.h" |
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18 | |
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19 | #include "coeffs/si_gmp.h" |
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20 | |
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21 | #include "coeffs/mpr_complex.h" |
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22 | #include "coeffs/rintegers.h" |
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23 | #include "coeffs/rmodulon.h" |
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24 | #include "coeffs/longrat.h" |
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25 | |
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26 | #include <string.h> |
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27 | |
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28 | #ifdef HAVE_RINGS |
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29 | |
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30 | omBin gmp_nrz_bin = omGetSpecBin(sizeof(mpz_t)); |
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31 | |
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32 | #if SI_INTEGER_VARIANT == 2 |
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33 | /* |
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34 | * Multiply two numbers |
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35 | */ |
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36 | static number nrzMult (number a, number b, const coeffs) |
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37 | { |
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38 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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39 | mpz_init(erg); |
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40 | mpz_mul(erg, (mpz_ptr) a, (mpz_ptr) b); |
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41 | return (number) erg; |
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42 | } |
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43 | |
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44 | /* |
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45 | * Give the smallest non unit k, such that a * x = k = b * y has a solution |
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46 | */ |
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47 | static number nrzLcm (number a,number b,const coeffs) |
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48 | { |
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49 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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50 | mpz_init(erg); |
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51 | mpz_lcm(erg, (mpz_ptr) a, (mpz_ptr) b); |
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52 | return (number) erg; |
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53 | } |
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54 | |
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55 | /* |
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56 | * Give the largest non unit k, such that a = x * k, b = y * k has |
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57 | * a solution. |
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58 | */ |
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59 | static number nrzGcd (number a,number b,const coeffs) |
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60 | { |
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61 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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62 | mpz_init(erg); |
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63 | mpz_gcd(erg, (mpz_ptr) a, (mpz_ptr) b); |
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64 | return (number) erg; |
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65 | } |
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66 | |
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67 | /* |
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68 | * Give the largest non unit k, such that a = x * k, b = y * k has |
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69 | * a solution and r, s, s.t. k = s*a + t*b |
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70 | */ |
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71 | static number nrzExtGcd (number a, number b, number *s, number *t, const coeffs) |
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72 | { |
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73 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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74 | mpz_ptr bs = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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75 | mpz_ptr bt = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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76 | mpz_init(erg); |
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77 | mpz_init(bs); |
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78 | mpz_init(bt); |
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79 | mpz_gcdext(erg, bs, bt, (mpz_ptr) a, (mpz_ptr) b); |
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80 | *s = (number) bs; |
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81 | *t = (number) bt; |
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82 | return (number) erg; |
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83 | } |
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84 | |
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85 | static number nrzXExtGcd (number a, number b, number *s, number *t, number *u, number *v, const coeffs ) |
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86 | { |
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87 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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88 | mpz_ptr bs = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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89 | mpz_ptr bt = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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90 | mpz_init(erg); |
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91 | mpz_init(bs); |
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92 | mpz_init(bt); |
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93 | |
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94 | mpz_gcdext(erg, bs, bt, (mpz_ptr)a, (mpz_ptr)b); |
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95 | |
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96 | mpz_ptr bu = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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97 | mpz_ptr bv = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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98 | |
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99 | mpz_init_set(bu, (mpz_ptr) b); |
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100 | mpz_init_set(bv, (mpz_ptr) a); |
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101 | |
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102 | assume(mpz_cmp_si(erg, 0)); |
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103 | |
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104 | mpz_div(bu, bu, erg); |
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105 | mpz_div(bv, bv, erg); |
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106 | |
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107 | mpz_mul_si(bu, bu, -1); |
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108 | *u = (number) bu; |
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109 | *v = (number) bv; |
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110 | |
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111 | *s = (number) bs; |
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112 | *t = (number) bt; |
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113 | return (number) erg; |
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114 | } |
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115 | |
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116 | static void nrzPower (number a, int i, number * result, const coeffs) |
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117 | { |
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118 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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119 | mpz_init(erg); |
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120 | mpz_pow_ui(erg, (mpz_ptr) a, i); |
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121 | *result = (number) erg; |
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122 | } |
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123 | |
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124 | /* |
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125 | * create a number from int |
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126 | */ |
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127 | number nrzInit (long i, const coeffs) |
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128 | { |
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129 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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130 | mpz_init_set_si(erg, i); |
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131 | return (number) erg; |
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132 | } |
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133 | |
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134 | void nrzDelete(number *a, const coeffs) |
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135 | { |
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136 | if (*a != NULL) |
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137 | { |
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138 | mpz_clear((mpz_ptr) *a); |
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139 | omFreeBin((ADDRESS) *a, gmp_nrz_bin); |
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140 | *a = NULL; |
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141 | } |
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142 | } |
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143 | |
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144 | static number nrzCopy(number a, const coeffs) |
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145 | { |
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146 | if (a==NULL) return NULL; |
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147 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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148 | mpz_init_set(erg, (mpz_ptr) a); |
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149 | return (number) erg; |
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150 | } |
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151 | |
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152 | #if 0 |
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153 | number nrzCopyMap(number a, const coeffs /*src*/, const coeffs dst) |
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154 | { |
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155 | return nrzCopy(a,dst); |
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156 | } |
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157 | #endif |
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158 | |
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159 | int nrzSize(number a, const coeffs) |
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160 | { |
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161 | mpz_ptr p=(mpz_ptr)a; |
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162 | int s=p->_mp_alloc; |
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163 | if (s==1) s=(mpz_cmp_ui(p,0)!=0); |
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164 | return s; |
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165 | |
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166 | } |
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167 | |
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168 | /* |
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169 | * convert a number to int |
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170 | */ |
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171 | static long nrzInt(number &n, const coeffs) |
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172 | { |
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173 | return mpz_get_si( (mpz_ptr)n); |
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174 | } |
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175 | |
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176 | static number nrzAdd (number a, number b, const coeffs) |
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177 | { |
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178 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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179 | mpz_init(erg); |
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180 | mpz_add(erg, (mpz_ptr) a, (mpz_ptr) b); |
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181 | return (number) erg; |
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182 | } |
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183 | |
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184 | static number nrzSub (number a, number b, const coeffs) |
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185 | { |
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186 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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187 | mpz_init(erg); |
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188 | mpz_sub(erg, (mpz_ptr) a, (mpz_ptr) b); |
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189 | return (number) erg; |
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190 | } |
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191 | |
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192 | static number nrzGetUnit (number, const coeffs r) |
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193 | { |
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194 | return nrzInit(1, r); |
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195 | } |
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196 | |
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197 | static BOOLEAN nrzIsUnit (number a, const coeffs) |
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198 | { |
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199 | return 0 == mpz_cmpabs_ui((mpz_ptr) a, 1); |
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200 | } |
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201 | |
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202 | static BOOLEAN nrzIsZero (number a, const coeffs) |
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203 | { |
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204 | return 0 == mpz_cmpabs_ui((mpz_ptr) a, 0); |
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205 | } |
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206 | |
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207 | static BOOLEAN nrzIsOne (number a, const coeffs) |
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208 | { |
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209 | return (0 == mpz_cmp_ui((mpz_ptr) a, 1)); |
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210 | } |
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211 | |
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212 | static BOOLEAN nrzIsMOne (number a, const coeffs) |
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213 | { |
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214 | return (0 == mpz_cmp_si((mpz_ptr) a, -1)); |
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215 | } |
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216 | |
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217 | static BOOLEAN nrzEqual (number a,number b, const coeffs) |
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218 | { |
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219 | return 0 == mpz_cmp((mpz_ptr) a, (mpz_ptr) b); |
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220 | } |
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221 | |
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222 | static BOOLEAN nrzGreater (number a,number b, const coeffs) |
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223 | { |
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224 | return 0 < mpz_cmp((mpz_ptr) a, (mpz_ptr) b); |
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225 | } |
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226 | |
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227 | static BOOLEAN nrzGreaterZero (number k, const coeffs) |
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228 | { |
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229 | return 0 < mpz_sgn1((mpz_ptr) k); |
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230 | } |
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231 | |
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232 | static BOOLEAN nrzDivBy (number a,number b, const coeffs) |
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233 | { |
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234 | return mpz_divisible_p((mpz_ptr) a, (mpz_ptr) b) != 0; |
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235 | } |
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236 | |
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237 | static int nrzDivComp(number a, number b, const coeffs r) |
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238 | { |
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239 | if (nrzDivBy(a, b, r)) |
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240 | { |
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241 | if (nrzDivBy(b, a, r)) return 2; |
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242 | return -1; |
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243 | } |
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244 | if (nrzDivBy(b, a, r)) return 1; |
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245 | return 0; |
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246 | } |
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247 | |
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248 | static number nrzDiv (number a,number b, const coeffs) |
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249 | { |
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250 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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251 | mpz_init(erg); |
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252 | mpz_ptr r = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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253 | mpz_init(r); |
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254 | mpz_tdiv_qr(erg, r, (mpz_ptr) a, (mpz_ptr) b); |
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255 | //if (!nrzIsZero((number) r, R)) |
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256 | //{ |
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257 | // WerrorS("Division by non divisible element."); |
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258 | // WerrorS("Result is without remainder."); |
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259 | //} |
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260 | mpz_clear(r); |
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261 | omFreeBin(r, gmp_nrz_bin); |
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262 | return (number) erg; |
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263 | } |
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264 | |
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265 | static number nrzExactDiv (number a,number b, const coeffs) |
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266 | { |
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267 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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268 | mpz_init(erg); |
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269 | mpz_tdiv_q(erg, (mpz_ptr) a, (mpz_ptr) b); |
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270 | return (number) erg; |
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271 | } |
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272 | |
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273 | static number nrzQuotRem (number a, number b, number * r, const coeffs ) |
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274 | { |
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275 | mpz_ptr qq = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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276 | mpz_init(qq); |
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277 | mpz_ptr rr = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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278 | mpz_init(rr); |
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279 | mpz_tdiv_qr(qq, rr, (mpz_ptr) a, (mpz_ptr) b); |
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280 | if (r==NULL) |
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281 | { |
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282 | mpz_clear(rr); |
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283 | omFreeBin(rr,gmp_nrz_bin); |
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284 | } |
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285 | else |
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286 | { |
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287 | *r=(number)rr; |
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288 | } |
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289 | return (number) qq; |
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290 | } |
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291 | |
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292 | static number nrzIntMod (number a,number b, const coeffs) |
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293 | { |
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294 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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295 | mpz_init(erg); |
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296 | mpz_ptr r = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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297 | mpz_init(r); |
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298 | mpz_tdiv_qr(erg, r, (mpz_ptr) a, (mpz_ptr) b); |
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299 | mpz_clear(erg); |
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300 | omFreeBin(erg, gmp_nrz_bin); |
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301 | return (number) r; |
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302 | } |
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303 | |
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304 | static number nrzInvers (number c, const coeffs r) |
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305 | { |
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306 | if (!nrzIsUnit((number) c, r)) |
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307 | { |
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308 | WerrorS("Non invertible element."); |
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309 | return (number)NULL; |
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310 | } |
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311 | return nrzCopy(c,r); |
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312 | } |
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313 | |
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314 | static number nrzNeg (number c, const coeffs) |
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315 | { |
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316 | // nNeg inplace !!! |
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317 | mpz_mul_si((mpz_ptr) c, (mpz_ptr) c, -1); |
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318 | return c; |
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319 | } |
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320 | |
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321 | static number nrzMapMachineInt(number from, const coeffs /*src*/, const coeffs /*dst*/) |
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322 | { |
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323 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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324 | mpz_init_set_ui(erg, (unsigned long) from); |
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325 | return (number) erg; |
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326 | } |
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327 | |
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328 | static number nrzMapZp(number from, const coeffs /*src*/, const coeffs /*dst*/) |
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329 | { |
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330 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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331 | mpz_init_set_si(erg, (long) from); |
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332 | return (number) erg; |
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333 | } |
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334 | |
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335 | static number nrzMapQ(number from, const coeffs src, const coeffs /*dst*/) |
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336 | { |
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337 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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338 | mpz_init(erg); |
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339 | nlGMP(from, erg, src); // FIXME? TODO? // extern void nlGMP(number &i, number n, const coeffs r); // to be replaced with n_MPZ(erg, from, src); // ? |
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340 | return (number) erg; |
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341 | } |
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342 | |
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343 | static nMapFunc nrzSetMap(const coeffs src, const coeffs /*dst*/) |
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344 | { |
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345 | /* dst = currRing */ |
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346 | /* dst = nrn */ |
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347 | if ((src->rep==n_rep_gmp) |
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348 | && (nCoeff_is_Z(src) || nCoeff_is_Zn(src) || nCoeff_is_Ring_PtoM(src))) |
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349 | { |
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350 | return ndCopyMap; //nrzCopyMap; |
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351 | } |
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352 | if ((src->rep==n_rep_gap_gmp) /*&& nCoeff_is_Z(src)*/) |
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353 | { |
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354 | return ndCopyMap; //nrzCopyMap; |
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355 | } |
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356 | if (nCoeff_is_Ring_2toM(src)) |
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357 | { |
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358 | return nrzMapMachineInt; |
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359 | } |
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360 | if (nCoeff_is_Zp(src)) |
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361 | { |
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362 | return nrzMapZp; |
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363 | } |
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364 | if (getCoeffType(src)==n_Q /*nCoeff_is_Q(src) or coeffs_BIGINT*/) |
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365 | { |
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366 | return nrzMapQ; |
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367 | } |
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368 | return NULL; // default |
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369 | } |
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370 | |
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371 | /* |
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372 | * set the exponent (allocate and init tables) (TODO) |
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373 | */ |
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374 | |
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375 | void nrzSetExp(int, coeffs) |
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376 | { |
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377 | } |
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378 | |
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379 | void nrzInitExp(int, coeffs) |
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380 | { |
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381 | } |
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382 | |
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383 | #ifdef LDEBUG |
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384 | static BOOLEAN nrzDBTest (number, const char *, const int, const coeffs) |
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385 | { |
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386 | return TRUE;//TODO |
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387 | } |
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388 | #endif |
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389 | |
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390 | void nrzWrite (number a, const coeffs) |
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391 | { |
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392 | char *s,*z; |
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393 | if (a==NULL) |
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394 | { |
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395 | StringAppendS("o"); |
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396 | } |
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397 | else |
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398 | { |
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399 | int l=mpz_sizeinbase((mpz_ptr) a, 10) + 2; |
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400 | s=(char*)omAlloc(l); |
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401 | z=mpz_get_str(s,10,(mpz_ptr) a); |
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402 | StringAppendS(z); |
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403 | omFreeSize((ADDRESS)s,l); |
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404 | } |
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405 | } |
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406 | |
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407 | /*2 |
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408 | * extracts a long integer from s, returns the rest (COPY FROM longrat0.cc) |
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409 | */ |
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410 | static const char * nlEatLongC(char *s, mpz_ptr i) |
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411 | { |
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412 | const char * start=s; |
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413 | |
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414 | if (*s<'0' || *s>'9') |
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415 | { |
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416 | mpz_set_ui(i,1); |
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417 | return s; |
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418 | } |
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419 | while (*s >= '0' && *s <= '9') s++; |
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420 | if (*s=='\0') |
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421 | { |
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422 | mpz_set_str(i,start,10); |
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423 | } |
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424 | else |
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425 | { |
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426 | char c=*s; |
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427 | *s='\0'; |
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428 | mpz_set_str(i,start,10); |
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429 | *s=c; |
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430 | } |
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431 | return s; |
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432 | } |
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433 | |
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434 | |
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435 | static CanonicalForm nrzConvSingNFactoryN(number n, BOOLEAN setChar, const coeffs /*r*/) |
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436 | { |
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437 | if (setChar) setCharacteristic( 0 ); |
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438 | |
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439 | CanonicalForm term; |
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440 | mpz_t num; |
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441 | mpz_init_set(num, *((mpz_t*)n)); |
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442 | term = make_cf(num); |
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443 | return term; |
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444 | } |
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445 | |
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446 | static number nrzConvFactoryNSingN(const CanonicalForm n, const coeffs r) |
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447 | { |
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448 | if (n.isImm()) |
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449 | return nrzInit(n.intval(),r); |
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450 | else |
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451 | { |
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452 | mpz_ptr m = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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453 | gmp_numerator(n,m); |
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454 | if (!n.den().isOne()) |
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455 | { |
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456 | WarnS("denominator is not 1 in factory"); |
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457 | } |
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458 | return (number) m; |
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459 | } |
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460 | } |
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461 | |
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462 | static const char * nrzRead (const char *s, number *a, const coeffs) |
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463 | { |
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464 | mpz_ptr z = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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465 | { |
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466 | mpz_init(z); |
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467 | s = nlEatLongC((char *) s, z); |
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468 | } |
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469 | *a = (number) z; |
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470 | return s; |
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471 | } |
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472 | |
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473 | static void nrzCoeffWrite (const coeffs, BOOLEAN /*details*/) |
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474 | { |
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475 | PrintS("ZZ"); |
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476 | } |
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477 | |
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478 | static char* nrzCoeffName(const coeffs) |
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479 | { |
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480 | return (char*)"ZZ"; |
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481 | } |
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482 | |
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483 | static char* nrzCoeffString(const coeffs cf) |
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484 | { |
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485 | return omStrDup(nrzCoeffName(cf)); |
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486 | } |
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487 | |
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488 | static coeffs nrzQuot1(number c, const coeffs r) |
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489 | { |
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490 | long ch = r->cfInt(c, r); |
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491 | mpz_t dummy; |
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492 | mpz_init_set_ui(dummy, ch); |
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493 | ZnmInfo info; |
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494 | info.base = dummy; |
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495 | info.exp = (unsigned long) 1; |
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496 | coeffs rr = nInitChar(n_Zn, (void*)&info); |
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497 | mpz_clear(dummy); |
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498 | return(rr); |
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499 | } |
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500 | |
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501 | static number nrzInitMPZ(mpz_t m, const coeffs) |
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502 | { |
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503 | mpz_ptr z = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
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504 | mpz_init_set(z, m); |
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505 | return (number)z; |
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506 | } |
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507 | |
---|
508 | static number nrzFarey(number r, number N, const coeffs R) |
---|
509 | { |
---|
510 | number a0 = nrzCopy(N, R); |
---|
511 | number b0 = nrzInit(0, R); |
---|
512 | number a1 = nrzCopy(r, R); |
---|
513 | number b1 = nrzInit(1, R); |
---|
514 | number two = nrzInit(2, R); |
---|
515 | #if 0 |
---|
516 | PrintS("Farey start with "); |
---|
517 | n_Print(r, R); |
---|
518 | PrintS(" mod "); |
---|
519 | n_Print(N, R); |
---|
520 | PrintLn(); |
---|
521 | #endif |
---|
522 | while (1) |
---|
523 | { |
---|
524 | number as = nrzMult(a1, a1, R); |
---|
525 | n_InpMult(as, two, R); |
---|
526 | if (nrzGreater(N, as, R)) |
---|
527 | { |
---|
528 | nrzDelete(&as, R); |
---|
529 | break; |
---|
530 | } |
---|
531 | nrzDelete(&as, R); |
---|
532 | number q = nrzDiv(a0, a1, R); |
---|
533 | number t = nrzMult(a1, q, R), |
---|
534 | s = nrzSub(a0, t, R); |
---|
535 | nrzDelete(&a0, R); |
---|
536 | a0 = a1; |
---|
537 | a1 = s; |
---|
538 | nrzDelete(&t, R); |
---|
539 | |
---|
540 | t = nrzMult(b1, q, R); |
---|
541 | s = nrzSub(b0, t, R); |
---|
542 | nrzDelete(&b0, R); |
---|
543 | b0 = b1; |
---|
544 | b1 = s; |
---|
545 | nrzDelete(&t, R); |
---|
546 | nrzDelete(&q, R); |
---|
547 | } |
---|
548 | number as = nrzMult(b1, b1, R); |
---|
549 | n_InpMult(as, two, R); |
---|
550 | nrzDelete(&two, R); |
---|
551 | if (nrzGreater(as, N, R)) |
---|
552 | { |
---|
553 | nrzDelete(&a0, R); |
---|
554 | nrzDelete(&a1, R); |
---|
555 | nrzDelete(&b0, R); |
---|
556 | nrzDelete(&b1, R); |
---|
557 | nrzDelete(&as, R); |
---|
558 | return NULL; |
---|
559 | } |
---|
560 | nrzDelete(&as, R); |
---|
561 | nrzDelete(&a0, R); |
---|
562 | nrzDelete(&b0, R); |
---|
563 | |
---|
564 | number a, b, ab; |
---|
565 | coeffs Q = nInitChar(n_Q, 0); |
---|
566 | nMapFunc f = n_SetMap(R, Q); |
---|
567 | a = f(a1, R, Q); |
---|
568 | b = f(b1, R, Q); |
---|
569 | ab = n_Div(a, b, Q); |
---|
570 | n_Delete(&a, Q); |
---|
571 | n_Delete(&b, Q); |
---|
572 | nKillChar(Q); |
---|
573 | |
---|
574 | nrzDelete(&a1, R); |
---|
575 | nrzDelete(&b1, R); |
---|
576 | return ab; |
---|
577 | } |
---|
578 | |
---|
579 | void nrzWriteFd(number n, const ssiInfo* d, const coeffs) |
---|
580 | { |
---|
581 | mpz_out_str (d->f_write,SSI_BASE, (mpz_ptr)n); |
---|
582 | fputc(' ',d->f_write); |
---|
583 | } |
---|
584 | |
---|
585 | number nrzReadFd(const ssiInfo *d, const coeffs) |
---|
586 | { |
---|
587 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
588 | mpz_init(erg); |
---|
589 | s_readmpz_base(d->f_read,erg,SSI_BASE); |
---|
590 | return (number)erg; |
---|
591 | } |
---|
592 | |
---|
593 | BOOLEAN nrzInitChar(coeffs r, void *) |
---|
594 | { |
---|
595 | assume( getCoeffType(r) == n_Z ); |
---|
596 | |
---|
597 | r->is_field=FALSE; |
---|
598 | r->is_domain=TRUE; |
---|
599 | r->rep=n_rep_gmp; |
---|
600 | |
---|
601 | //r->nCoeffIsEqual = ndCoeffIsEqual; |
---|
602 | r->cfCoeffString = nrzCoeffString; |
---|
603 | r->cfCoeffName = nrzCoeffName; |
---|
604 | r->cfCoeffWrite = nrzCoeffWrite; |
---|
605 | //r->cfKillChar = ndKillChar; |
---|
606 | r->cfMult = nrzMult; |
---|
607 | r->cfSub = nrzSub; |
---|
608 | r->cfAdd = nrzAdd; |
---|
609 | r->cfDiv = nrzDiv; |
---|
610 | r->cfIntMod= nrzIntMod; |
---|
611 | r->cfExactDiv= nrzExactDiv; |
---|
612 | r->cfInit = nrzInit; |
---|
613 | r->cfInitMPZ = nrzInitMPZ; |
---|
614 | r->cfSize = nrzSize; |
---|
615 | r->cfInt = nrzInt; |
---|
616 | r->cfDivComp = nrzDivComp; |
---|
617 | r->cfIsUnit = nrzIsUnit; |
---|
618 | r->cfGetUnit = nrzGetUnit; |
---|
619 | r->cfExtGcd = nrzExtGcd; |
---|
620 | r->cfXExtGcd = nrzXExtGcd; |
---|
621 | r->cfDivBy = nrzDivBy; |
---|
622 | r->cfQuotRem = nrzQuotRem; |
---|
623 | r->cfInpNeg = nrzNeg; |
---|
624 | r->cfInvers= nrzInvers; |
---|
625 | r->cfCopy = nrzCopy; |
---|
626 | r->cfWriteLong = nrzWrite; |
---|
627 | r->cfRead = nrzRead; |
---|
628 | r->cfGreater = nrzGreater; |
---|
629 | r->cfEqual = nrzEqual; |
---|
630 | r->cfIsZero = nrzIsZero; |
---|
631 | r->cfIsOne = nrzIsOne; |
---|
632 | r->cfIsMOne = nrzIsMOne; |
---|
633 | r->cfGreaterZero = nrzGreaterZero; |
---|
634 | r->cfPower = nrzPower; |
---|
635 | r->cfGcd = nrzGcd; |
---|
636 | r->cfLcm = nrzLcm; |
---|
637 | r->cfDelete= nrzDelete; |
---|
638 | r->cfSetMap = nrzSetMap; |
---|
639 | r->cfQuot1 = nrzQuot1; |
---|
640 | r->convSingNFactoryN=nrzConvSingNFactoryN; |
---|
641 | r->convFactoryNSingN=nrzConvFactoryNSingN; |
---|
642 | r->cfChineseRemainder=nlChineseRemainderSym; |
---|
643 | r->cfFarey=nrzFarey; |
---|
644 | r->cfWriteFd=nrzWriteFd; |
---|
645 | r->cfReadFd=nrzReadFd; |
---|
646 | // debug stuff |
---|
647 | |
---|
648 | #ifdef LDEBUG |
---|
649 | r->cfDBTest=nrzDBTest; |
---|
650 | #endif |
---|
651 | |
---|
652 | r->ch = 0; |
---|
653 | r->has_simple_Alloc=FALSE; |
---|
654 | r->has_simple_Inverse=FALSE; |
---|
655 | return FALSE; |
---|
656 | } |
---|
657 | |
---|
658 | #elif SI_INTEGER_VARIANT == 3 |
---|
659 | |
---|
660 | //make sure that a small number is an immediate integer |
---|
661 | //bascially coped from longrat.cc nlShort3 |
---|
662 | //TODO: is there any point in checking 0 first??? |
---|
663 | //TODO: it is not clear that this works in 32/64 bit everywhere. |
---|
664 | // too many hacks. |
---|
665 | #ifdef LDEBUG |
---|
666 | #define nrzTest(A) nrzDBTest(A,__FILE__,__LINE__,NULL) |
---|
667 | BOOLEAN nrzDBTest (number x, const char *f, const int l, const coeffs); |
---|
668 | #else |
---|
669 | #define nrzTest(A) |
---|
670 | #endif |
---|
671 | |
---|
672 | #undef CF_DEBUG |
---|
673 | static inline number nrz_short(number x) |
---|
674 | { |
---|
675 | #if CF_DEBUG |
---|
676 | StringAppendS("short("); |
---|
677 | nrzWrite(x, NULL); |
---|
678 | #endif |
---|
679 | if (mpz_sgn1((mpz_ptr) x)==0) |
---|
680 | { |
---|
681 | mpz_clear((mpz_ptr)x); |
---|
682 | omFreeBin(x, gmp_nrz_bin); |
---|
683 | #if CF_DEBUG |
---|
684 | StringAppendS(")=0"); |
---|
685 | #endif |
---|
686 | return INT_TO_SR(0); |
---|
687 | } |
---|
688 | if (mpz_size1((mpz_ptr)x)<=MP_SMALL) |
---|
689 | { |
---|
690 | long ui=mpz_get_si((mpz_ptr)x); |
---|
691 | if ((((ui<<3)>>3)==ui) |
---|
692 | && (mpz_cmp_si((mpz_ptr)x,ui)==0)) |
---|
693 | { |
---|
694 | mpz_clear((mpz_ptr)x); |
---|
695 | omFreeBin(x, gmp_nrz_bin); |
---|
696 | #if CF_DEBUG |
---|
697 | StringAppendS(")=imm"); |
---|
698 | #endif |
---|
699 | return INT_TO_SR(ui); |
---|
700 | } |
---|
701 | } |
---|
702 | #if CF_DEBUG |
---|
703 | StringAppendS(")"); |
---|
704 | #endif |
---|
705 | return x; |
---|
706 | } |
---|
707 | |
---|
708 | |
---|
709 | static int nrzSize(number a, const coeffs) |
---|
710 | { |
---|
711 | if (a==INT_TO_SR(0)) return 0; |
---|
712 | if (n_Z_IS_SMALL(a)) return 1; |
---|
713 | return ((mpz_ptr)a)->_mp_alloc; |
---|
714 | } |
---|
715 | |
---|
716 | |
---|
717 | /* |
---|
718 | * Multiply two numbers |
---|
719 | * check for 0, 1, -1 maybe |
---|
720 | */ |
---|
721 | #if CF_DEBUG |
---|
722 | number _nrzMult(number, number, const coeffs); |
---|
723 | number nrzMult(number a, number b, const coeffs R) |
---|
724 | { |
---|
725 | StringSetS("Mult: "); |
---|
726 | nrzWrite(a, R); |
---|
727 | StringAppendS(" by "); |
---|
728 | nrzWrite(b, R); |
---|
729 | number c = _nrzMult(a, b, R); |
---|
730 | StringAppendS(" is "); |
---|
731 | nrzWrite(c, R); |
---|
732 | char * s = StringEndS(); |
---|
733 | Print("%s\n", s); |
---|
734 | omFree(s); |
---|
735 | return c; |
---|
736 | } |
---|
737 | number _nrzMult (number a, number b, const coeffs R) |
---|
738 | #else |
---|
739 | number nrzMult (number a, number b, const coeffs R) |
---|
740 | #endif |
---|
741 | { |
---|
742 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
743 | { |
---|
744 | //from longrat.cc |
---|
745 | if (SR_TO_INT(a)==0) |
---|
746 | return a; |
---|
747 | if (SR_TO_INT(b)==0) |
---|
748 | return b; |
---|
749 | long r=(long)((unsigned long)(SR_HDL(a)-1L))*((unsigned long)(SR_HDL(b)>>1)); |
---|
750 | if ((r/(SR_HDL(b)>>1))==(SR_HDL(a)-1L)) |
---|
751 | { |
---|
752 | number u=((number) ((r>>1)+SR_INT)); |
---|
753 | // if (((((long)SR_HDL(u))<<1)>>1)==SR_HDL(u)) return (u); |
---|
754 | return nrzInit(SR_HDL(u)>>2, R); |
---|
755 | } |
---|
756 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
757 | mpz_init(erg); |
---|
758 | mpz_set_si(erg, SR_TO_INT(a)); |
---|
759 | mpz_mul_si(erg, erg, SR_TO_INT(b)); |
---|
760 | nrzTest((number)erg); |
---|
761 | return (number) erg; |
---|
762 | } |
---|
763 | else if (n_Z_IS_SMALL(a)) |
---|
764 | { |
---|
765 | if (SR_TO_INT(a)==0) |
---|
766 | return a; |
---|
767 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
768 | mpz_init_set(erg, (mpz_ptr) b); |
---|
769 | mpz_mul_si(erg, erg, SR_TO_INT(a)); |
---|
770 | nrzTest((number)erg); |
---|
771 | return (number) erg; |
---|
772 | } |
---|
773 | else if (n_Z_IS_SMALL(b)) |
---|
774 | { |
---|
775 | if (SR_TO_INT(b)==0) |
---|
776 | return b; |
---|
777 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
778 | mpz_init_set(erg, (mpz_ptr) a); |
---|
779 | mpz_mul_si(erg, erg, SR_TO_INT(b)); |
---|
780 | nrzTest((number)erg); |
---|
781 | return (number) erg; |
---|
782 | } |
---|
783 | else |
---|
784 | { |
---|
785 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
786 | mpz_init(erg); |
---|
787 | mpz_mul(erg, (mpz_ptr) a, (mpz_ptr) b); |
---|
788 | nrzTest((number)erg); |
---|
789 | return (number) erg; |
---|
790 | } |
---|
791 | } |
---|
792 | |
---|
793 | |
---|
794 | static long int_gcd(long a, long b) |
---|
795 | { |
---|
796 | long r; |
---|
797 | a = ABS(a); |
---|
798 | b = ABS(b); |
---|
799 | if (!a) return b; |
---|
800 | if (!b) return a; |
---|
801 | do |
---|
802 | { |
---|
803 | r = a % b; |
---|
804 | a = b; |
---|
805 | b = r; |
---|
806 | } while (b); |
---|
807 | return ABS(a); // % in c doeas not imply a signn |
---|
808 | // it would be unlikely to see a negative here |
---|
809 | // but who knows |
---|
810 | } |
---|
811 | |
---|
812 | /* |
---|
813 | * Give the smallest non unit k, such that a * x = k = b * y has a solution |
---|
814 | */ |
---|
815 | static number nrzLcm (number a, number b, const coeffs R) |
---|
816 | { |
---|
817 | #ifdef CF_DEBUG |
---|
818 | PrintS("nrzLcm\n"); |
---|
819 | #endif |
---|
820 | mpz_ptr erg; |
---|
821 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
822 | { |
---|
823 | long g = int_gcd(SR_TO_INT(a), SR_TO_INT(b)); |
---|
824 | return nrzMult(a, INT_TO_SR(SR_TO_INT(b)/g), R); |
---|
825 | } |
---|
826 | else |
---|
827 | { |
---|
828 | erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
829 | if (n_Z_IS_SMALL(a)) |
---|
830 | { |
---|
831 | mpz_init_set(erg, (mpz_ptr) b); |
---|
832 | unsigned long g = mpz_gcd_ui(NULL, erg, (unsigned long) ABS(SR_TO_INT(a))); |
---|
833 | mpz_mul_si(erg, erg, SR_TO_INT(a)/g); |
---|
834 | } |
---|
835 | else if (n_Z_IS_SMALL(b)) |
---|
836 | { |
---|
837 | mpz_init_set(erg, (mpz_ptr) a); |
---|
838 | unsigned long g = mpz_gcd_ui(NULL, erg, (unsigned long) ABS(SR_TO_INT(b))); |
---|
839 | mpz_mul_si(erg, erg, SR_TO_INT(b)/g); |
---|
840 | } |
---|
841 | else |
---|
842 | { |
---|
843 | mpz_init(erg); |
---|
844 | mpz_lcm(erg, (mpz_ptr) a, (mpz_ptr) b); |
---|
845 | } |
---|
846 | } |
---|
847 | return (number) erg; |
---|
848 | } |
---|
849 | |
---|
850 | static number nrzCopy(number a, const coeffs) |
---|
851 | { |
---|
852 | if (n_Z_IS_SMALL(a)) return a; |
---|
853 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
854 | mpz_init_set(erg, (mpz_ptr) a); |
---|
855 | return (number) erg; |
---|
856 | } |
---|
857 | |
---|
858 | /* |
---|
859 | * Give the largest non unit k, such that a = x * k, b = y * k has |
---|
860 | * a solution. |
---|
861 | */ |
---|
862 | static number nrzGcd (number a,number b,const coeffs R) |
---|
863 | { |
---|
864 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
865 | { |
---|
866 | long g = int_gcd(SR_TO_INT(a), SR_TO_INT(b)); |
---|
867 | return INT_TO_SR(g); |
---|
868 | } |
---|
869 | else if (n_Z_IS_SMALL(a)) |
---|
870 | { |
---|
871 | if (a==INT_TO_SR(0)) |
---|
872 | return nrzCopy(b, R); |
---|
873 | unsigned long g = mpz_gcd_ui(NULL, (mpz_ptr)b, (unsigned long) ABS(SR_TO_INT(a))); |
---|
874 | return INT_TO_SR( g); |
---|
875 | } |
---|
876 | else if (n_Z_IS_SMALL(b)) |
---|
877 | { |
---|
878 | if (b==INT_TO_SR(0)) |
---|
879 | return nrzCopy(a, R); |
---|
880 | unsigned long g = mpz_gcd_ui(NULL, (mpz_ptr)a, (unsigned long) ABS(SR_TO_INT(b))); |
---|
881 | return INT_TO_SR(g); |
---|
882 | } |
---|
883 | else |
---|
884 | { |
---|
885 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
886 | mpz_init(erg); |
---|
887 | mpz_gcd(erg, (mpz_ptr) a, (mpz_ptr) b); |
---|
888 | return (number) erg; |
---|
889 | } |
---|
890 | } |
---|
891 | |
---|
892 | /* |
---|
893 | * Give the largest non unit k, such that a = x * k, b = y * k has |
---|
894 | * a solution and r, s, s.t. k = s*a + t*b |
---|
895 | */ |
---|
896 | static long int_extgcd(long a, long b, long * u, long* x, long * v, long* y) |
---|
897 | { |
---|
898 | long q, r; |
---|
899 | if (!a) |
---|
900 | { |
---|
901 | *u = 0; |
---|
902 | *v = 1; |
---|
903 | *x = -1; |
---|
904 | *y = 0; |
---|
905 | return b; |
---|
906 | } |
---|
907 | if (!b) |
---|
908 | { |
---|
909 | *u = 1; |
---|
910 | *v = 0; |
---|
911 | *x = 0; |
---|
912 | *y = 1; |
---|
913 | return a; |
---|
914 | } |
---|
915 | *u=1; |
---|
916 | *v=0; |
---|
917 | *x=0; |
---|
918 | *y=1; |
---|
919 | do |
---|
920 | { |
---|
921 | q = a/b; |
---|
922 | r = a%b; |
---|
923 | assume (q*b+r == a); |
---|
924 | a = b; |
---|
925 | b = r; |
---|
926 | |
---|
927 | r = -(*v)*q+(*u); |
---|
928 | (*u) =(*v); |
---|
929 | (*v) = r; |
---|
930 | |
---|
931 | r = -(*y)*q+(*x); |
---|
932 | (*x) = (*y); |
---|
933 | (*y) = r; |
---|
934 | } while (b); |
---|
935 | |
---|
936 | return a; |
---|
937 | } |
---|
938 | |
---|
939 | static number nrzExtGcd (number a, number b, number *s, number *t, const coeffs) |
---|
940 | { |
---|
941 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
942 | { |
---|
943 | long u, v, x, y; |
---|
944 | long g = int_extgcd(SR_TO_INT(a), SR_TO_INT(b), &u, &v, &x, &y); |
---|
945 | *s = INT_TO_SR(u); |
---|
946 | *t = INT_TO_SR(v); |
---|
947 | return INT_TO_SR(g); |
---|
948 | } |
---|
949 | else |
---|
950 | { |
---|
951 | mpz_t aa, bb; |
---|
952 | if (n_Z_IS_SMALL(a)) |
---|
953 | { |
---|
954 | mpz_init_set_si(aa, SR_TO_INT(a)); |
---|
955 | } |
---|
956 | else |
---|
957 | { |
---|
958 | mpz_init_set(aa, (mpz_ptr) a); |
---|
959 | } |
---|
960 | if (n_Z_IS_SMALL(b)) |
---|
961 | { |
---|
962 | mpz_init_set_si(bb, SR_TO_INT(b)); |
---|
963 | } |
---|
964 | else |
---|
965 | { |
---|
966 | mpz_init_set(bb, (mpz_ptr) b); |
---|
967 | } |
---|
968 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
969 | mpz_ptr bs = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
970 | mpz_ptr bt = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
971 | mpz_init(erg); |
---|
972 | mpz_init(bs); |
---|
973 | mpz_init(bt); |
---|
974 | mpz_gcdext(erg, bs, bt, aa, bb); |
---|
975 | *s = nrz_short((number) bs); |
---|
976 | *t = nrz_short((number) bt); |
---|
977 | mpz_clear(aa); |
---|
978 | mpz_clear(bb); |
---|
979 | return nrz_short((number) erg); |
---|
980 | } |
---|
981 | } |
---|
982 | #if CF_DEBUG |
---|
983 | static number _nrzXExtGcd(number, number, number *, number *, number *, number *, const coeffs); |
---|
984 | static number nrzXExtGcd(number a, number b, number *x, number * y, number * u, number * v, const coeffs R) |
---|
985 | { |
---|
986 | char * s; |
---|
987 | StringSetS("XExtGcd: "); |
---|
988 | nrzWrite(a, R); |
---|
989 | StringAppendS(" by "); |
---|
990 | nrzWrite(b, R); |
---|
991 | number c = _nrzXExtGcd(a, b, x, y, u, v, R); |
---|
992 | StringAppendS(" is "); |
---|
993 | nrzWrite(c, R); |
---|
994 | StringAppendS("[["); |
---|
995 | nrzWrite(*x, R); |
---|
996 | StringAppendS(", "); |
---|
997 | nrzWrite(*y, R); |
---|
998 | StringAppendS("], "); |
---|
999 | nrzWrite(*u, R); |
---|
1000 | StringAppendS(", "); |
---|
1001 | nrzWrite(*v, R); |
---|
1002 | s=StringEndS(); |
---|
1003 | Print("%s]]\n", s); |
---|
1004 | omFree(s); |
---|
1005 | return c; |
---|
1006 | } |
---|
1007 | static number _nrzXExtGcd (number a, number b, number *s, number *t, number *u, number *v, const coeffs ) |
---|
1008 | #else |
---|
1009 | static number nrzXExtGcd (number a, number b, number *s, number *t, number *u, number *v, const coeffs ) |
---|
1010 | #endif |
---|
1011 | { |
---|
1012 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1013 | { |
---|
1014 | long uu, vv, x, y; |
---|
1015 | long g = int_extgcd(SR_TO_INT(a), SR_TO_INT(b), &uu, &vv, &x, &y); |
---|
1016 | *s = INT_TO_SR(uu); |
---|
1017 | *t = INT_TO_SR(vv); |
---|
1018 | *u = INT_TO_SR(x); |
---|
1019 | *v = INT_TO_SR(y); |
---|
1020 | return INT_TO_SR(g); |
---|
1021 | } |
---|
1022 | else |
---|
1023 | { |
---|
1024 | mpz_t aa, bb; |
---|
1025 | if (n_Z_IS_SMALL(a)) |
---|
1026 | { |
---|
1027 | mpz_init_set_si(aa, SR_TO_INT(a)); |
---|
1028 | } |
---|
1029 | else |
---|
1030 | { |
---|
1031 | mpz_init_set(aa, (mpz_ptr) a); |
---|
1032 | } |
---|
1033 | if (n_Z_IS_SMALL(b)) |
---|
1034 | { |
---|
1035 | mpz_init_set_si(bb, SR_TO_INT(b)); |
---|
1036 | } |
---|
1037 | else |
---|
1038 | { |
---|
1039 | mpz_init_set(bb, (mpz_ptr) b); |
---|
1040 | } |
---|
1041 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1042 | mpz_ptr bs = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1043 | mpz_ptr bt = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1044 | mpz_init(erg); |
---|
1045 | mpz_init(bs); |
---|
1046 | mpz_init(bt); |
---|
1047 | |
---|
1048 | mpz_gcdext(erg, bs, bt, aa, bb); |
---|
1049 | |
---|
1050 | mpz_ptr bu = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1051 | mpz_ptr bv = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1052 | |
---|
1053 | mpz_init_set(bu, (mpz_ptr) bb); |
---|
1054 | mpz_init_set(bv, (mpz_ptr) aa); |
---|
1055 | |
---|
1056 | mpz_clear(aa); |
---|
1057 | mpz_clear(bb); |
---|
1058 | assume(mpz_cmp_si(erg, 0)); |
---|
1059 | |
---|
1060 | mpz_div(bu, bu, erg); |
---|
1061 | mpz_div(bv, bv, erg); |
---|
1062 | |
---|
1063 | mpz_mul_si(bu, bu, -1); |
---|
1064 | *u = nrz_short((number) bu); |
---|
1065 | *v = nrz_short((number) bv); |
---|
1066 | |
---|
1067 | *s = nrz_short((number) bs); |
---|
1068 | *t = nrz_short((number) bt); |
---|
1069 | return nrz_short((number) erg); |
---|
1070 | } |
---|
1071 | } |
---|
1072 | #if CF_DEBUG |
---|
1073 | static number _nrzQuotRem(number, number, number *, const coeffs); |
---|
1074 | static number nrzQuotRem(number a, number b, number * r, const coeffs R) |
---|
1075 | { |
---|
1076 | StringSetS("QuotRem: "); |
---|
1077 | nrzWrite(a, R); |
---|
1078 | StringAppendS(" by "); |
---|
1079 | nrzWrite(b, R); |
---|
1080 | number c = _nrzQuotRem(a, b, r, R); |
---|
1081 | StringAppendS(" is "); |
---|
1082 | nrzWrite(c, R); |
---|
1083 | if (r) { |
---|
1084 | StringAppendS("+R("); |
---|
1085 | nrzWrite(*r, R); |
---|
1086 | StringAppendS(")"); |
---|
1087 | } |
---|
1088 | char * s = StringEndS(); |
---|
1089 | Print("%s\n", s); |
---|
1090 | omFree(s); |
---|
1091 | return c; |
---|
1092 | } |
---|
1093 | static number _nrzQuotRem (number a, number b, number * r, const coeffs ) |
---|
1094 | #else |
---|
1095 | static number nrzQuotRem (number a, number b, number * r, const coeffs ) |
---|
1096 | #endif |
---|
1097 | { |
---|
1098 | assume(SR_TO_INT(b)); |
---|
1099 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1100 | { |
---|
1101 | if (r) |
---|
1102 | *r = INT_TO_SR(SR_TO_INT(a) % SR_TO_INT(b)); |
---|
1103 | return INT_TO_SR(SR_TO_INT(a)/SR_TO_INT(b)); |
---|
1104 | } |
---|
1105 | else if (n_Z_IS_SMALL(a)) |
---|
1106 | { |
---|
1107 | //a is small, b is not, so q=0, r=a |
---|
1108 | if (r) |
---|
1109 | *r = a; |
---|
1110 | return INT_TO_SR(0); |
---|
1111 | } |
---|
1112 | else if (n_Z_IS_SMALL(b)) |
---|
1113 | { |
---|
1114 | unsigned long rr; |
---|
1115 | mpz_ptr qq = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1116 | mpz_init(qq); |
---|
1117 | mpz_t rrr; |
---|
1118 | mpz_init(rrr); |
---|
1119 | rr = mpz_divmod_ui(qq, rrr, (mpz_ptr) a, (unsigned long)ABS(SR_TO_INT(b))); |
---|
1120 | mpz_clear(rrr); |
---|
1121 | |
---|
1122 | if (r) |
---|
1123 | *r = INT_TO_SR(rr); |
---|
1124 | if (SR_TO_INT(b)<0) |
---|
1125 | { |
---|
1126 | mpz_mul_si(qq, qq, -1); |
---|
1127 | } |
---|
1128 | return nrz_short((number)qq); |
---|
1129 | } |
---|
1130 | mpz_ptr qq = (mpz_ptr) omAllocBin(gmp_nrz_bin), |
---|
1131 | rr = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1132 | mpz_init(qq); |
---|
1133 | mpz_init(rr); |
---|
1134 | mpz_divmod(qq, rr, (mpz_ptr)a, (mpz_ptr)b); |
---|
1135 | if (r) |
---|
1136 | *r = (number) rr; |
---|
1137 | else |
---|
1138 | { |
---|
1139 | mpz_clear(rr); |
---|
1140 | } |
---|
1141 | nrzTest((number)qq); |
---|
1142 | return (number) qq; |
---|
1143 | } |
---|
1144 | |
---|
1145 | static void nrzPower (number a, int i, number * result, const coeffs) |
---|
1146 | { |
---|
1147 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1148 | mpz_init(erg); |
---|
1149 | mpz_t aa; |
---|
1150 | if (n_Z_IS_SMALL(a)) |
---|
1151 | mpz_init_set_si(aa, SR_TO_INT(a)); |
---|
1152 | else |
---|
1153 | mpz_init_set(aa, (mpz_ptr) a); |
---|
1154 | mpz_pow_ui(erg, aa, i); |
---|
1155 | *result = nrz_short((number) erg); |
---|
1156 | } |
---|
1157 | |
---|
1158 | /* |
---|
1159 | * create a number from int |
---|
1160 | * TODO: do not create an mpz if not necessary |
---|
1161 | */ |
---|
1162 | number nrzInit (long i, const coeffs) |
---|
1163 | { |
---|
1164 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1165 | mpz_init_set_si(erg, i); |
---|
1166 | return nrz_short((number) erg); |
---|
1167 | } |
---|
1168 | |
---|
1169 | static number nrzInitMPZ(mpz_t m, const coeffs) |
---|
1170 | { |
---|
1171 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1172 | mpz_init_set(erg, m); |
---|
1173 | return nrz_short((number) erg); |
---|
1174 | } |
---|
1175 | |
---|
1176 | |
---|
1177 | static void nrzDelete(number *a, const coeffs) |
---|
1178 | { |
---|
1179 | if (*a == NULL) return; |
---|
1180 | if (n_Z_IS_SMALL(*a)==0) |
---|
1181 | { |
---|
1182 | mpz_clear((mpz_ptr) *a); |
---|
1183 | omFreeBin((ADDRESS) *a, gmp_nrz_bin); |
---|
1184 | } |
---|
1185 | *a = NULL; |
---|
1186 | } |
---|
1187 | |
---|
1188 | /* |
---|
1189 | * convert a number to int |
---|
1190 | */ |
---|
1191 | static long nrzInt(number &n, const coeffs) |
---|
1192 | { |
---|
1193 | if (n_Z_IS_SMALL(n)) return SR_TO_INT(n); |
---|
1194 | return mpz_get_si( (mpz_ptr)n); |
---|
1195 | } |
---|
1196 | #if CF_DEBUG |
---|
1197 | static number _nrzAdd(number, number, const coeffs); |
---|
1198 | static number nrzAdd(number a, number b, const coeffs R) |
---|
1199 | { |
---|
1200 | StringSetS("Add: "); |
---|
1201 | nrzWrite(a, R); |
---|
1202 | StringAppendS(" to "); |
---|
1203 | nrzWrite(b, R); |
---|
1204 | number c = _nrzAdd(a, b, R); |
---|
1205 | StringAppendS(" is "); |
---|
1206 | nrzWrite(c, R); |
---|
1207 | char * s = StringEndS(); |
---|
1208 | Print("%s\n", s); |
---|
1209 | omFree(s); |
---|
1210 | return c; |
---|
1211 | } |
---|
1212 | static number _nrzAdd (number a, number b, const coeffs ) |
---|
1213 | #else |
---|
1214 | static number nrzAdd (number a, number b, const coeffs ) |
---|
1215 | #endif |
---|
1216 | { |
---|
1217 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1218 | { |
---|
1219 | long c = SR_TO_INT(a) + SR_TO_INT(b); |
---|
1220 | if (INT_IS_SMALL(c)) |
---|
1221 | return INT_TO_SR(c); |
---|
1222 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1223 | mpz_init_set_si(erg, c); |
---|
1224 | |
---|
1225 | nrzTest((number)erg); |
---|
1226 | return (number) erg; |
---|
1227 | } |
---|
1228 | else if (n_Z_IS_SMALL(a)) |
---|
1229 | { |
---|
1230 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1231 | mpz_init(erg); |
---|
1232 | if (SR_TO_INT(a)>0) |
---|
1233 | mpz_add_ui(erg, (mpz_ptr) b, (unsigned long)SR_TO_INT(a)); |
---|
1234 | else |
---|
1235 | mpz_sub_ui(erg, (mpz_ptr) b, (unsigned long)-(SR_TO_INT(a))); |
---|
1236 | return nrz_short((number) erg); |
---|
1237 | } |
---|
1238 | else if (n_Z_IS_SMALL(b)) |
---|
1239 | { |
---|
1240 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1241 | mpz_init(erg); |
---|
1242 | if (SR_TO_INT(b)>0) |
---|
1243 | mpz_add_ui(erg, (mpz_ptr) a, (unsigned long)SR_TO_INT(b)); |
---|
1244 | else |
---|
1245 | mpz_sub_ui(erg, (mpz_ptr) a, (unsigned long)-(SR_TO_INT(b))); |
---|
1246 | return nrz_short((number) erg); |
---|
1247 | } |
---|
1248 | else |
---|
1249 | { |
---|
1250 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1251 | mpz_init(erg); |
---|
1252 | mpz_add(erg, (mpz_ptr) a, (mpz_ptr) b); |
---|
1253 | return nrz_short((number) erg); |
---|
1254 | } |
---|
1255 | } |
---|
1256 | |
---|
1257 | static number nrzSub (number a, number b, const coeffs ) |
---|
1258 | { |
---|
1259 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1260 | { |
---|
1261 | long c = SR_TO_INT(a) - SR_TO_INT(b); |
---|
1262 | if (INT_IS_SMALL(c)) |
---|
1263 | return INT_TO_SR(c); |
---|
1264 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1265 | mpz_init_set_si(erg, c); |
---|
1266 | nrzTest((number)erg); |
---|
1267 | return (number) erg; |
---|
1268 | } |
---|
1269 | else if (n_Z_IS_SMALL(a)) |
---|
1270 | { |
---|
1271 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1272 | mpz_init(erg); |
---|
1273 | |
---|
1274 | if (SR_TO_INT(a)>0) |
---|
1275 | mpz_ui_sub(erg, (unsigned long)SR_TO_INT(a), (mpz_ptr) b); |
---|
1276 | else |
---|
1277 | { |
---|
1278 | mpz_add_ui(erg, (mpz_ptr) b, (unsigned long)-SR_TO_INT(a)); |
---|
1279 | mpz_neg(erg, erg); |
---|
1280 | } |
---|
1281 | return nrz_short((number) erg); |
---|
1282 | } |
---|
1283 | else if (n_Z_IS_SMALL(b)) |
---|
1284 | { |
---|
1285 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1286 | mpz_init(erg); |
---|
1287 | if (SR_TO_INT(b)>0) |
---|
1288 | mpz_sub_ui(erg, (mpz_ptr) a, (unsigned long)SR_TO_INT(b)); |
---|
1289 | else |
---|
1290 | mpz_add_ui(erg, (mpz_ptr) a, (unsigned long)-SR_TO_INT(b)); |
---|
1291 | return nrz_short((number) erg); |
---|
1292 | } |
---|
1293 | else |
---|
1294 | { |
---|
1295 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1296 | mpz_init(erg); |
---|
1297 | mpz_sub(erg, (mpz_ptr) a, (mpz_ptr) b); |
---|
1298 | return nrz_short((number) erg); |
---|
1299 | } |
---|
1300 | } |
---|
1301 | |
---|
1302 | static BOOLEAN nrzGreater (number a,number b, const coeffs) |
---|
1303 | { |
---|
1304 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1305 | return ((long)a)>((long)b); |
---|
1306 | else if (n_Z_IS_SMALL(a)) |
---|
1307 | return 0 > mpz_cmp_si((mpz_ptr)b,SR_TO_INT(a)); |
---|
1308 | else if (n_Z_IS_SMALL(b)) |
---|
1309 | return 0 < mpz_cmp_si((mpz_ptr)a,SR_TO_INT(b)); |
---|
1310 | return 0 < mpz_cmp((mpz_ptr) a, (mpz_ptr) b); |
---|
1311 | } |
---|
1312 | |
---|
1313 | static BOOLEAN nrzGreaterZero (number k, const coeffs C) |
---|
1314 | { |
---|
1315 | return nrzGreater(k, INT_TO_SR(0), C); |
---|
1316 | } |
---|
1317 | |
---|
1318 | static number nrzGetUnit (number n, const coeffs r) |
---|
1319 | { |
---|
1320 | if (nrzGreaterZero(n, r)) |
---|
1321 | return INT_TO_SR(1); |
---|
1322 | /*else*/ |
---|
1323 | return INT_TO_SR(-1); |
---|
1324 | } |
---|
1325 | |
---|
1326 | static number nrzAnn(number n, const coeffs) |
---|
1327 | { |
---|
1328 | if (SR_TO_INT(n)) // in Z: the annihilator of !=0 is 0 |
---|
1329 | return INT_TO_SR(0); |
---|
1330 | else |
---|
1331 | return INT_TO_SR(1); |
---|
1332 | } |
---|
1333 | |
---|
1334 | static BOOLEAN nrzIsUnit (number a, const coeffs) |
---|
1335 | { |
---|
1336 | return ABS(SR_TO_INT(a))==1; |
---|
1337 | } |
---|
1338 | |
---|
1339 | static BOOLEAN nrzIsZero (number a, const coeffs) |
---|
1340 | { |
---|
1341 | return (a==INT_TO_SR(0)); |
---|
1342 | } |
---|
1343 | |
---|
1344 | static BOOLEAN nrzIsOne (number a, const coeffs) |
---|
1345 | { |
---|
1346 | return a==INT_TO_SR(1); |
---|
1347 | } |
---|
1348 | |
---|
1349 | static BOOLEAN nrzIsMOne (number a, const coeffs) |
---|
1350 | { |
---|
1351 | return a==INT_TO_SR(-1); |
---|
1352 | } |
---|
1353 | |
---|
1354 | static BOOLEAN nrzEqual (number a,number b, const coeffs) |
---|
1355 | { |
---|
1356 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1357 | return a==b; |
---|
1358 | else if (n_Z_IS_SMALL(a) || n_Z_IS_SMALL(b)) |
---|
1359 | return FALSE; |
---|
1360 | else |
---|
1361 | return 0 == mpz_cmp((mpz_ptr) a, (mpz_ptr) b); |
---|
1362 | } |
---|
1363 | |
---|
1364 | static BOOLEAN nrzDivBy (number a,number b, const coeffs) |
---|
1365 | { |
---|
1366 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1367 | { |
---|
1368 | return SR_TO_INT(a) %SR_TO_INT(b) ==0; |
---|
1369 | } |
---|
1370 | else if (n_Z_IS_SMALL(a)) |
---|
1371 | { |
---|
1372 | return a==INT_TO_SR(0); |
---|
1373 | } |
---|
1374 | else if (n_Z_IS_SMALL(b)) |
---|
1375 | { |
---|
1376 | return mpz_divisible_ui_p((mpz_ptr)a, (unsigned long)ABS(SR_TO_INT(b))) != 0; |
---|
1377 | } |
---|
1378 | else |
---|
1379 | return mpz_divisible_p((mpz_ptr) a, (mpz_ptr) b) != 0; |
---|
1380 | } |
---|
1381 | |
---|
1382 | static int nrzDivComp(number a, number b, const coeffs r) |
---|
1383 | { |
---|
1384 | if (nrzDivBy(a, b, r)) |
---|
1385 | { |
---|
1386 | if (nrzDivBy(b, a, r)) return 2; |
---|
1387 | return -1; |
---|
1388 | } |
---|
1389 | if (nrzDivBy(b, a, r)) return 1; |
---|
1390 | return 0; |
---|
1391 | } |
---|
1392 | |
---|
1393 | static number nrzDiv (number a,number b, const coeffs) |
---|
1394 | { |
---|
1395 | assume(SR_TO_INT(b)); |
---|
1396 | if (n_Z_IS_SMALL(a) && n_Z_IS_SMALL(b)) |
---|
1397 | { |
---|
1398 | //if (SR_TO_INT(a) % SR_TO_INT(b)) |
---|
1399 | //{ |
---|
1400 | // WerrorS("1:Division by non divisible element."); |
---|
1401 | // WerrorS("Result is without remainder."); |
---|
1402 | //} |
---|
1403 | return INT_TO_SR(SR_TO_INT(a)/SR_TO_INT(b)); |
---|
1404 | } |
---|
1405 | else if (n_Z_IS_SMALL(a)) |
---|
1406 | { |
---|
1407 | //if (SR_TO_INT(a)) |
---|
1408 | //{ |
---|
1409 | // WerrorS("2:Division by non divisible element."); |
---|
1410 | // WerrorS("Result is without remainder."); |
---|
1411 | //} |
---|
1412 | return INT_TO_SR(0); |
---|
1413 | } |
---|
1414 | else if (n_Z_IS_SMALL(b)) |
---|
1415 | { |
---|
1416 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1417 | mpz_t r; |
---|
1418 | mpz_init(r); |
---|
1419 | mpz_init(erg); |
---|
1420 | if (mpz_divmod_ui(erg, r, (mpz_ptr) a, (unsigned long)ABS(SR_TO_INT(b)))) { |
---|
1421 | // WerrorS("3:Division by non divisible element."); |
---|
1422 | // WerrorS("Result is without remainder."); |
---|
1423 | } |
---|
1424 | mpz_clear(r); |
---|
1425 | if (SR_TO_INT(b)<0) |
---|
1426 | mpz_neg(erg, erg); |
---|
1427 | return nrz_short((number) erg); |
---|
1428 | } |
---|
1429 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1430 | mpz_init(erg); |
---|
1431 | mpz_t r; |
---|
1432 | mpz_init(r); |
---|
1433 | mpz_tdiv_qr(erg, r, (mpz_ptr) a, (mpz_ptr) b); |
---|
1434 | #if CF_DEBUG |
---|
1435 | StringSetS("division of"); |
---|
1436 | nrzWrite(a, R); |
---|
1437 | StringAppendS(" by "); |
---|
1438 | nrzWrite(b, R); |
---|
1439 | StringAppendS(" is "); |
---|
1440 | number du; |
---|
1441 | nrzWrite(du = (number)erg, R); |
---|
1442 | StringAppendS(" rest "); |
---|
1443 | nrzWrite(du = (number)r, R); |
---|
1444 | char * s = StringEndS(); |
---|
1445 | Print("%s\n", s); |
---|
1446 | omFree(s); |
---|
1447 | #endif |
---|
1448 | |
---|
1449 | if (mpz_sgn1(r)!=0) |
---|
1450 | { |
---|
1451 | //WerrorS("4:Division by non divisible element."); |
---|
1452 | //WerrorS("Result is without remainder."); |
---|
1453 | } |
---|
1454 | mpz_clear(r); |
---|
1455 | return nrz_short((number) erg); |
---|
1456 | } |
---|
1457 | |
---|
1458 | static number nrzExactDiv (number a,number b, const coeffs) |
---|
1459 | { |
---|
1460 | assume(SR_TO_INT(b)); |
---|
1461 | mpz_t aa, bb; |
---|
1462 | if (n_Z_IS_SMALL(a)) |
---|
1463 | mpz_init_set_si(aa, SR_TO_INT(a)); |
---|
1464 | else |
---|
1465 | mpz_init_set(aa, (mpz_ptr) a); |
---|
1466 | if (n_Z_IS_SMALL(b)) |
---|
1467 | mpz_init_set_si(bb, SR_TO_INT(b)); |
---|
1468 | else |
---|
1469 | mpz_init_set(bb, (mpz_ptr) b); |
---|
1470 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1471 | mpz_init(erg); |
---|
1472 | mpz_tdiv_q(erg, (mpz_ptr) aa, (mpz_ptr) bb); |
---|
1473 | mpz_clear(aa); |
---|
1474 | mpz_clear(bb); |
---|
1475 | nrzTest((number)erg); |
---|
1476 | return (number) erg; |
---|
1477 | } |
---|
1478 | |
---|
1479 | static number nrzIntMod (number a,number b, const coeffs) |
---|
1480 | { |
---|
1481 | mpz_t aa, bb; |
---|
1482 | assume(SR_TO_INT(b)); |
---|
1483 | if (n_Z_IS_SMALL(a)) |
---|
1484 | mpz_init_set_si(aa, SR_TO_INT(a)); |
---|
1485 | else |
---|
1486 | mpz_init_set(aa, (mpz_ptr) a); |
---|
1487 | if (n_Z_IS_SMALL(b)) |
---|
1488 | mpz_init_set_si(bb, SR_TO_INT(b)); |
---|
1489 | else |
---|
1490 | mpz_init_set(bb, (mpz_ptr) b); |
---|
1491 | |
---|
1492 | mpz_t erg; |
---|
1493 | mpz_init(erg); |
---|
1494 | mpz_ptr r = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1495 | mpz_init(r); |
---|
1496 | mpz_tdiv_qr(erg, r, (mpz_ptr) aa, (mpz_ptr) bb); |
---|
1497 | mpz_clear(erg); |
---|
1498 | mpz_clear(aa); |
---|
1499 | mpz_clear(bb); |
---|
1500 | |
---|
1501 | return nrz_short((number) r); |
---|
1502 | } |
---|
1503 | |
---|
1504 | static number nrzInvers (number c, const coeffs r) |
---|
1505 | { |
---|
1506 | if (!nrzIsUnit((number) c, r)) |
---|
1507 | { |
---|
1508 | WerrorS("Non invertible element."); |
---|
1509 | return (number)NULL; |
---|
1510 | } |
---|
1511 | return c; // has to be 1 or -1.... |
---|
1512 | } |
---|
1513 | |
---|
1514 | static number nrzNeg (number c, const coeffs) |
---|
1515 | { |
---|
1516 | // nNeg inplace !!! |
---|
1517 | if (n_Z_IS_SMALL(c)) |
---|
1518 | return INT_TO_SR(-SR_TO_INT(c)); |
---|
1519 | mpz_mul_si((mpz_ptr) c, (mpz_ptr) c, -1); |
---|
1520 | return c; |
---|
1521 | } |
---|
1522 | |
---|
1523 | static number nrzFarey(number r, number N, const coeffs R) |
---|
1524 | { |
---|
1525 | number a0 = nrzCopy(N, R); |
---|
1526 | number b0 = nrzInit(0, R); |
---|
1527 | number a1 = nrzCopy(r, R); |
---|
1528 | number b1 = nrzInit(1, R); |
---|
1529 | number two = nrzInit(2, R); |
---|
1530 | #if 0 |
---|
1531 | PrintS("Farey start with "); |
---|
1532 | n_Print(r, R); |
---|
1533 | PrintS(" mod "); |
---|
1534 | n_Print(N, R); |
---|
1535 | PrintLn(); |
---|
1536 | #endif |
---|
1537 | while (1) |
---|
1538 | { |
---|
1539 | number as = nrzMult(a1, a1, R); |
---|
1540 | n_InpMult(as, two, R); |
---|
1541 | if (nrzGreater(N, as, R)) |
---|
1542 | { |
---|
1543 | nrzDelete(&as, R); |
---|
1544 | break; |
---|
1545 | } |
---|
1546 | nrzDelete(&as, R); |
---|
1547 | number q = nrzDiv(a0, a1, R); |
---|
1548 | number t = nrzMult(a1, q, R), |
---|
1549 | s = nrzSub(a0, t, R); |
---|
1550 | nrzDelete(&a0, R); |
---|
1551 | a0 = a1; |
---|
1552 | a1 = s; |
---|
1553 | nrzDelete(&t, R); |
---|
1554 | |
---|
1555 | t = nrzMult(b1, q, R); |
---|
1556 | s = nrzSub(b0, t, R); |
---|
1557 | nrzDelete(&b0, R); |
---|
1558 | b0 = b1; |
---|
1559 | b1 = s; |
---|
1560 | nrzDelete(&t, R); |
---|
1561 | nrzDelete(&q, R); |
---|
1562 | } |
---|
1563 | number as = nrzMult(b1, b1, R); |
---|
1564 | n_InpMult(as, two, R); |
---|
1565 | nrzDelete(&two, R); |
---|
1566 | if (nrzGreater(as, N, R)) |
---|
1567 | { |
---|
1568 | nrzDelete(&a0, R); |
---|
1569 | nrzDelete(&a1, R); |
---|
1570 | nrzDelete(&b0, R); |
---|
1571 | nrzDelete(&b1, R); |
---|
1572 | nrzDelete(&as, R); |
---|
1573 | return NULL; |
---|
1574 | } |
---|
1575 | nrzDelete(&as, R); |
---|
1576 | nrzDelete(&a0, R); |
---|
1577 | nrzDelete(&b0, R); |
---|
1578 | |
---|
1579 | number a, b, ab; |
---|
1580 | coeffs Q = nInitChar(n_Q, 0); |
---|
1581 | nMapFunc f = n_SetMap(R, Q); |
---|
1582 | a = f(a1, R, Q); |
---|
1583 | b = f(b1, R, Q); |
---|
1584 | ab = n_Div(a, b, Q); |
---|
1585 | n_Delete(&a, Q); |
---|
1586 | n_Delete(&b, Q); |
---|
1587 | nKillChar(Q); |
---|
1588 | |
---|
1589 | nrzDelete(&a1, R); |
---|
1590 | nrzDelete(&b1, R); |
---|
1591 | return ab; |
---|
1592 | } |
---|
1593 | |
---|
1594 | static number nrzMapMachineInt(number from, const coeffs /*src*/, const coeffs /*dst*/) |
---|
1595 | { |
---|
1596 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1597 | mpz_init_set_ui(erg, (unsigned long) from); |
---|
1598 | return nrz_short((number) erg); |
---|
1599 | } |
---|
1600 | |
---|
1601 | static number nrzMapZp(number from, const coeffs /*src*/, const coeffs /*dst*/) |
---|
1602 | { |
---|
1603 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1604 | mpz_init_set_si(erg, (long) from); |
---|
1605 | return nrz_short((number) erg); |
---|
1606 | } |
---|
1607 | |
---|
1608 | static number nrzModNMap(number from, const coeffs /* src */, const coeffs /*dst*/) |
---|
1609 | { |
---|
1610 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1611 | mpz_init_set(erg, (mpz_ptr) from); |
---|
1612 | return nrz_short((number) erg); |
---|
1613 | } |
---|
1614 | |
---|
1615 | static number nrzMapQ(number from, const coeffs /* src */, const coeffs dst) |
---|
1616 | { |
---|
1617 | if (SR_HDL(from) & SR_INT) |
---|
1618 | return nrzInit(SR_TO_INT(from),dst); |
---|
1619 | if (from->s!=3) |
---|
1620 | { |
---|
1621 | WerrorS("rational in map to integer"); |
---|
1622 | return NULL; |
---|
1623 | } |
---|
1624 | mpz_ptr erg = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1625 | mpz_init_set(erg, from->z); |
---|
1626 | return nrz_short((number) erg); |
---|
1627 | } |
---|
1628 | |
---|
1629 | static nMapFunc nrzSetMap(const coeffs src, const coeffs /*dst*/) |
---|
1630 | { |
---|
1631 | /* dst = rintegers */ |
---|
1632 | if (src->rep==n_rep_gmp) //nCoeff_is_Zn(src) || nCoeff_is_Ring_PtoM(src)) |
---|
1633 | return nrzModNMap; |
---|
1634 | |
---|
1635 | if ((src->rep==n_rep_gap_gmp) && nCoeff_is_Z(src)) |
---|
1636 | { |
---|
1637 | return ndCopyMap; //nrzCopyMap; |
---|
1638 | } |
---|
1639 | if (src->rep==n_rep_gap_rat) /*&& nCoeff_is_Z(src)) Q, bigint*/ |
---|
1640 | { |
---|
1641 | return nrzMapQ; |
---|
1642 | } |
---|
1643 | if ((src->rep==n_rep_int) && nCoeff_is_Ring_2toM(src)) |
---|
1644 | { |
---|
1645 | return nrzMapMachineInt; |
---|
1646 | } |
---|
1647 | if ((src->rep==n_rep_int) && nCoeff_is_Zp(src)) |
---|
1648 | { |
---|
1649 | return nrzMapZp; |
---|
1650 | } |
---|
1651 | return NULL; // default |
---|
1652 | } |
---|
1653 | |
---|
1654 | |
---|
1655 | /* |
---|
1656 | * set the exponent (allocate and init tables) (TODO) |
---|
1657 | */ |
---|
1658 | |
---|
1659 | void nrzSetExp(int, coeffs) |
---|
1660 | { |
---|
1661 | } |
---|
1662 | |
---|
1663 | void nrzInitExp(int, coeffs) |
---|
1664 | { |
---|
1665 | } |
---|
1666 | |
---|
1667 | #ifdef LDEBUG |
---|
1668 | BOOLEAN nrzDBTest (number x, const char *f, const int l, const coeffs) |
---|
1669 | { |
---|
1670 | if (SR_HDL(x) & SR_INT) return TRUE; |
---|
1671 | if (mpz_sgn1((mpz_ptr) x)==0) |
---|
1672 | { |
---|
1673 | Print("gmp-0 %s:%d\n",f,l); |
---|
1674 | return FALSE; |
---|
1675 | } |
---|
1676 | if (mpz_size1((mpz_ptr)x)<=MP_SMALL) |
---|
1677 | { |
---|
1678 | long ui=mpz_get_si((mpz_ptr)x); |
---|
1679 | if ((((ui<<3)>>3)==ui) |
---|
1680 | && (mpz_cmp_si((mpz_ptr)x,ui)==0)) |
---|
1681 | { |
---|
1682 | Print("gmp-small %s:%d\n",f,l); |
---|
1683 | return FALSE; |
---|
1684 | } |
---|
1685 | } |
---|
1686 | return TRUE; |
---|
1687 | } |
---|
1688 | #endif |
---|
1689 | |
---|
1690 | void nrzWrite (number a, const coeffs) |
---|
1691 | { |
---|
1692 | char *s,*z; |
---|
1693 | if (a==NULL) |
---|
1694 | { |
---|
1695 | StringAppendS("o"); |
---|
1696 | } |
---|
1697 | else |
---|
1698 | { |
---|
1699 | if (n_Z_IS_SMALL(a)) |
---|
1700 | { |
---|
1701 | StringAppend("%d", SR_TO_INT(a)); |
---|
1702 | } |
---|
1703 | else |
---|
1704 | { |
---|
1705 | int l=mpz_sizeinbase((mpz_ptr) a, 10) + 2; |
---|
1706 | s=(char*)omAlloc(l); |
---|
1707 | z=mpz_get_str(s,10,(mpz_ptr) a); |
---|
1708 | StringAppendS(z); |
---|
1709 | omFreeSize((ADDRESS)s,l); |
---|
1710 | } |
---|
1711 | } |
---|
1712 | } |
---|
1713 | |
---|
1714 | /*2 |
---|
1715 | * extracts a long integer from s, returns the rest (COPY FROM longrat0.cc) |
---|
1716 | */ |
---|
1717 | static const char * nlEatLongC(char *s, mpz_ptr i) |
---|
1718 | { |
---|
1719 | const char * start=s; |
---|
1720 | |
---|
1721 | if (*s<'0' || *s>'9') |
---|
1722 | { |
---|
1723 | mpz_set_ui(i,1); |
---|
1724 | return s; |
---|
1725 | } |
---|
1726 | while (*s >= '0' && *s <= '9') s++; |
---|
1727 | if (*s=='\0') |
---|
1728 | { |
---|
1729 | mpz_set_str(i,start,10); |
---|
1730 | } |
---|
1731 | else |
---|
1732 | { |
---|
1733 | char c=*s; |
---|
1734 | *s='\0'; |
---|
1735 | mpz_set_str(i,start,10); |
---|
1736 | *s=c; |
---|
1737 | } |
---|
1738 | return s; |
---|
1739 | } |
---|
1740 | |
---|
1741 | static const char * nrzRead (const char *s, number *a, const coeffs) |
---|
1742 | { |
---|
1743 | mpz_ptr z = (mpz_ptr) omAllocBin(gmp_nrz_bin); |
---|
1744 | { |
---|
1745 | mpz_init(z); |
---|
1746 | s = nlEatLongC((char *) s, z); |
---|
1747 | } |
---|
1748 | *a = nrz_short((number) z); |
---|
1749 | return s; |
---|
1750 | } |
---|
1751 | |
---|
1752 | static void nrzCoeffWrite (const coeffs, BOOLEAN /*details*/) |
---|
1753 | { |
---|
1754 | //PrintS("// ZZ\n"); |
---|
1755 | PrintS("// coeff. ring is : Integers\n"); |
---|
1756 | } |
---|
1757 | |
---|
1758 | static char* nrzCoeffString(const coeffs) |
---|
1759 | { |
---|
1760 | return omStrDup("integer"); |
---|
1761 | } |
---|
1762 | |
---|
1763 | static CanonicalForm nrzConvSingNFactoryN( number n, BOOLEAN setChar, const coeffs /*r*/ ) |
---|
1764 | { |
---|
1765 | if (setChar) setCharacteristic( 0 ); |
---|
1766 | |
---|
1767 | CanonicalForm term; |
---|
1768 | if ( n_Z_IS_SMALL(n)) |
---|
1769 | { |
---|
1770 | term = SR_TO_INT(n); |
---|
1771 | } |
---|
1772 | else |
---|
1773 | { |
---|
1774 | mpz_t dummy; |
---|
1775 | mpz_init_set( dummy,n->z ); |
---|
1776 | term = make_cf( dummy ); |
---|
1777 | } |
---|
1778 | return term; |
---|
1779 | } |
---|
1780 | |
---|
1781 | static number nrzConvFactoryNSingN( const CanonicalForm n, const coeffs r) |
---|
1782 | { |
---|
1783 | if (n.isImm()) |
---|
1784 | { |
---|
1785 | return nrzInit(n.intval(),r); |
---|
1786 | } |
---|
1787 | else |
---|
1788 | { |
---|
1789 | if ( !n.den().isOne() ) |
---|
1790 | { |
---|
1791 | WerrorS("rational in conversion to integer"); |
---|
1792 | return NULL; |
---|
1793 | } |
---|
1794 | mpz_ptr z = (mpz_ptr) omAlloc0Bin(gmp_nrz_bin); |
---|
1795 | gmp_numerator( n,z); |
---|
1796 | return nrz_short((number)z); |
---|
1797 | } |
---|
1798 | } |
---|
1799 | |
---|
1800 | static void nrzMPZ(mpz_t res, number &a, const coeffs) |
---|
1801 | { |
---|
1802 | if (n_Z_IS_SMALL(a)) |
---|
1803 | mpz_init_set_si(res, SR_TO_INT(a)); |
---|
1804 | else |
---|
1805 | mpz_init_set(res, (mpz_ptr) a); |
---|
1806 | } |
---|
1807 | |
---|
1808 | static coeffs nrzQuot1(number c, const coeffs r) |
---|
1809 | { |
---|
1810 | mpz_t dummy; |
---|
1811 | if(n_Z_IS_SMALL(c)) |
---|
1812 | { |
---|
1813 | long ch = r->cfInt(c, r); |
---|
1814 | mpz_init_set_ui(dummy, ch); |
---|
1815 | } |
---|
1816 | else |
---|
1817 | { |
---|
1818 | mpz_init_set(dummy, (mpz_ptr)c); |
---|
1819 | } |
---|
1820 | ZnmInfo info; |
---|
1821 | info.base = dummy; |
---|
1822 | info.exp = (unsigned long) 1; |
---|
1823 | coeffs rr = nInitChar(n_Zn, (void*)&info); |
---|
1824 | mpz_clear(dummy); |
---|
1825 | return(rr); |
---|
1826 | } |
---|
1827 | |
---|
1828 | number nlReadFd(const ssiInfo *d, const coeffs); |
---|
1829 | void nlWriteFd(number n, const ssiInfo* d, const coeffs); |
---|
1830 | |
---|
1831 | BOOLEAN nrzInitChar(coeffs r, void *) |
---|
1832 | { |
---|
1833 | assume( getCoeffType(r) == n_Z ); |
---|
1834 | |
---|
1835 | r->is_field=FALSE; |
---|
1836 | r->is_domain=TRUE; |
---|
1837 | r->rep=n_rep_gap_gmp; |
---|
1838 | |
---|
1839 | //r->nCoeffIsEqual = ndCoeffIsEqual; |
---|
1840 | r->cfCoeffString = nrzCoeffString; |
---|
1841 | //r->cfKillChar = ndKillChar; |
---|
1842 | r->cfMult = nrzMult; |
---|
1843 | r->cfSub = nrzSub; |
---|
1844 | r->cfAdd = nrzAdd; |
---|
1845 | r->cfDiv = nrzDiv; |
---|
1846 | r->cfIntMod= nrzIntMod; |
---|
1847 | r->cfExactDiv= nrzExactDiv; |
---|
1848 | r->cfInit = nrzInit; |
---|
1849 | r->cfInitMPZ = nrzInitMPZ; |
---|
1850 | r->cfSize = nrzSize; |
---|
1851 | r->cfInt = nrzInt; |
---|
1852 | //#ifdef HAVE_RINGS |
---|
1853 | r->cfDivComp = nrzDivComp; // only for ring stuff |
---|
1854 | r->cfIsUnit = nrzIsUnit; // only for ring stuff |
---|
1855 | r->cfGetUnit = nrzGetUnit; // only for ring stuff |
---|
1856 | r->cfAnn = nrzAnn; |
---|
1857 | r->cfExtGcd = nrzExtGcd; // only for ring stuff |
---|
1858 | r->cfXExtGcd = nrzXExtGcd; // only for ring stuff |
---|
1859 | r->cfQuotRem = nrzQuotRem; |
---|
1860 | r->cfDivBy = nrzDivBy; // only for ring stuff |
---|
1861 | //#endif |
---|
1862 | r->cfInpNeg = nrzNeg; |
---|
1863 | r->cfInvers= nrzInvers; |
---|
1864 | r->cfCopy = nrzCopy; |
---|
1865 | r->cfWriteLong = nrzWrite; |
---|
1866 | r->cfRead = nrzRead; |
---|
1867 | r->cfGreater = nrzGreater; |
---|
1868 | r->cfEqual = nrzEqual; |
---|
1869 | r->cfIsZero = nrzIsZero; |
---|
1870 | r->cfIsOne = nrzIsOne; |
---|
1871 | r->cfIsMOne = nrzIsMOne; |
---|
1872 | r->cfGreaterZero = nrzGreaterZero; |
---|
1873 | r->cfPower = nrzPower; |
---|
1874 | r->cfGcd = nrzGcd; |
---|
1875 | r->cfLcm = nrzLcm; |
---|
1876 | r->cfDelete= nrzDelete; |
---|
1877 | r->cfSetMap = nrzSetMap; |
---|
1878 | r->cfCoeffWrite = nrzCoeffWrite; |
---|
1879 | r->convSingNFactoryN = nrzConvSingNFactoryN; |
---|
1880 | r->convFactoryNSingN = nrzConvFactoryNSingN; |
---|
1881 | r->cfMPZ = nrzMPZ; |
---|
1882 | r->cfFarey = nrzFarey; |
---|
1883 | r->cfWriteFd=nlWriteFd; |
---|
1884 | r->cfReadFd=nlReadFd; |
---|
1885 | |
---|
1886 | r->cfQuot1 = nrzQuot1; |
---|
1887 | // requires conversion to factory: |
---|
1888 | r->cfChineseRemainder=nlChineseRemainderSym; |
---|
1889 | // debug stuff |
---|
1890 | |
---|
1891 | #ifdef LDEBUG |
---|
1892 | r->cfDBTest=nrzDBTest; |
---|
1893 | #endif |
---|
1894 | |
---|
1895 | r->ch = 0; |
---|
1896 | r->has_simple_Alloc=FALSE; |
---|
1897 | r->has_simple_Inverse=FALSE; |
---|
1898 | return FALSE; |
---|
1899 | } |
---|
1900 | |
---|
1901 | #elif SI_INTEGER_VARIANT == 1 |
---|
1902 | BOOLEAN nrzInitChar(coeffs r, void *) |
---|
1903 | { |
---|
1904 | return nlInitChar(r,(void*)1); |
---|
1905 | } |
---|
1906 | #else |
---|
1907 | #error set SI_INTEGER_VARIANT |
---|
1908 | #endif |
---|
1909 | #endif |
---|