[35aab3] | 1 | /**************************************** |
---|
| 2 | * Computer Algebra System SINGULAR * |
---|
| 3 | ****************************************/ |
---|
[341696] | 4 | /* $Id$ */ |
---|
[35aab3] | 5 | /* |
---|
| 6 | * ABSTRACT: computations with GMP floating-point numbers |
---|
| 7 | * |
---|
| 8 | * ngf == number gnu floats |
---|
| 9 | */ |
---|
| 10 | |
---|
[58aa457] | 11 | #include "config.h" |
---|
| 12 | #include "coeffs.h" |
---|
| 13 | #include <output.h> |
---|
| 14 | #include <omalloc.h> |
---|
| 15 | #include "numbers.h" |
---|
| 16 | #include "modulop.h" |
---|
| 17 | #include "longrat.h" |
---|
[35aab3] | 18 | |
---|
[58aa457] | 19 | #include <gnumpfl.h> |
---|
| 20 | #include <mpr_complex.h> |
---|
[35aab3] | 21 | |
---|
| 22 | extern size_t gmp_output_digits; |
---|
[58aa457] | 23 | //ring ngfMapRing; // to be used also in gnumpc.cc |
---|
[35aab3] | 24 | |
---|
[210852] | 25 | /// Our Type! |
---|
| 26 | static const n_coeffType ID = n_gnump_R; |
---|
| 27 | |
---|
[58aa457] | 28 | static number ngfMapP(number from, const coeffs src, const coeffs dst) |
---|
[35aab3] | 29 | { |
---|
[58aa457] | 30 | return ngfInit(npInt(from,src), dst); |
---|
[35aab3] | 31 | } |
---|
[58aa457] | 32 | number ngfMapQ(number from, const coeffs src, const coeffs dst) |
---|
[35aab3] | 33 | { |
---|
[c12222] | 34 | gmp_float *res=new gmp_float(numberFieldToFloat(from,QTOF)); |
---|
| 35 | return (number)res; |
---|
[35aab3] | 36 | } |
---|
| 37 | union nf |
---|
| 38 | { |
---|
| 39 | float _f; |
---|
| 40 | number _n; |
---|
| 41 | nf(float f) {_f = f;} |
---|
| 42 | nf(number n) {_n = n;} |
---|
| 43 | float F() const {return _f;} |
---|
| 44 | number N() const {return _n;} |
---|
| 45 | }; |
---|
[58aa457] | 46 | static number ngfMapR(number from, const coeffs src, const coeffs dst) |
---|
[35aab3] | 47 | { |
---|
[c12222] | 48 | gmp_float *res=new gmp_float((double)nf(from).F()); |
---|
| 49 | return (number)res; |
---|
[35aab3] | 50 | } |
---|
[58aa457] | 51 | static number ngfMapC(number from, const coeffs src, const coeffs dst) |
---|
[35aab3] | 52 | { |
---|
[c12222] | 53 | gmp_float *res=new gmp_float(((gmp_complex*)from)->real()); |
---|
| 54 | return (number)res; |
---|
[35aab3] | 55 | } |
---|
| 56 | |
---|
| 57 | /*2 |
---|
| 58 | * n := i |
---|
| 59 | */ |
---|
[58aa457] | 60 | number ngfInit (int i, const coeffs r) |
---|
[35aab3] | 61 | { |
---|
[210852] | 62 | assume( getCoeffType(r) == ID ); |
---|
| 63 | |
---|
[c12222] | 64 | gmp_float* n= new gmp_float( (double)i ); |
---|
[35aab3] | 65 | return (number)n; |
---|
| 66 | } |
---|
| 67 | |
---|
| 68 | /*2 |
---|
| 69 | * convert number to int |
---|
| 70 | */ |
---|
[58aa457] | 71 | int ngfInt(number &i, const coeffs r) |
---|
[35aab3] | 72 | { |
---|
[210852] | 73 | assume( getCoeffType(r) == ID ); |
---|
| 74 | |
---|
[3c6379] | 75 | double d=(double)*(gmp_float*)i; |
---|
| 76 | if (d<0.0) |
---|
| 77 | return (int)(d-0.5); |
---|
| 78 | else |
---|
| 79 | return (int)(d+0.5); |
---|
[35aab3] | 80 | } |
---|
| 81 | |
---|
[58aa457] | 82 | int ngfSize(number n, const coeffs r) |
---|
[12cca3] | 83 | { |
---|
[58aa457] | 84 | int i = ngfInt(n, r); |
---|
[12cca3] | 85 | /* basically return the largest integer in n; |
---|
| 86 | only if this happens to be zero although n != 0, |
---|
| 87 | return 1; |
---|
| 88 | (this code ensures that zero has the size zero) */ |
---|
| 89 | if ((i == 0) && (ngfIsZero(n) == FALSE)) i = 1; |
---|
| 90 | return i; |
---|
| 91 | } |
---|
| 92 | |
---|
[35aab3] | 93 | /*2 |
---|
| 94 | * delete a |
---|
| 95 | */ |
---|
[58aa457] | 96 | void ngfDelete (number * a, const coeffs r) |
---|
[35aab3] | 97 | { |
---|
[210852] | 98 | assume( getCoeffType(r) == ID ); |
---|
| 99 | |
---|
[35aab3] | 100 | if ( *a != NULL ) |
---|
| 101 | { |
---|
| 102 | delete *(gmp_float**)a; |
---|
| 103 | *a=NULL; |
---|
| 104 | } |
---|
| 105 | } |
---|
| 106 | |
---|
| 107 | /*2 |
---|
| 108 | * copy a to b |
---|
| 109 | */ |
---|
[58aa457] | 110 | number ngfCopy(number a, const coeffs r) |
---|
[35aab3] | 111 | { |
---|
[210852] | 112 | assume( getCoeffType(r) == ID ); |
---|
| 113 | |
---|
[c12222] | 114 | gmp_float* b= new gmp_float( *(gmp_float*)a ); |
---|
[35aab3] | 115 | return (number)b; |
---|
| 116 | } |
---|
| 117 | |
---|
| 118 | /*2 |
---|
| 119 | * za:= - za |
---|
| 120 | */ |
---|
[58aa457] | 121 | number ngfNeg (number a, const coeffs r) |
---|
[35aab3] | 122 | { |
---|
[210852] | 123 | assume( getCoeffType(r) == ID ); |
---|
| 124 | |
---|
[35aab3] | 125 | *(gmp_float*)a= -(*(gmp_float*)a); |
---|
| 126 | return (number)a; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | /* |
---|
| 130 | * 1/a |
---|
| 131 | */ |
---|
[210852] | 132 | number ngfInvers(number a, const coeffs r) |
---|
[35aab3] | 133 | { |
---|
[210852] | 134 | assume( getCoeffType(r) == ID ); |
---|
| 135 | |
---|
| 136 | gmp_float* f= NULL; |
---|
[c12222] | 137 | if (((gmp_float*)a)->isZero() ) |
---|
[35aab3] | 138 | { |
---|
[b7e838] | 139 | WerrorS(nDivBy0); |
---|
[35aab3] | 140 | } |
---|
| 141 | else |
---|
| 142 | { |
---|
[58aa457] | 143 | f= new gmp_float( gmp_float(1) / (*(gmp_float*)a) ); |
---|
[35aab3] | 144 | } |
---|
[58aa457] | 145 | return (number)f; |
---|
[35aab3] | 146 | } |
---|
| 147 | |
---|
| 148 | /*2 |
---|
| 149 | * u:= a + b |
---|
| 150 | */ |
---|
[58aa457] | 151 | number ngfAdd (number a, number b, const coeffs R) |
---|
[35aab3] | 152 | { |
---|
[210852] | 153 | assume( getCoeffType(R) == ID ); |
---|
| 154 | |
---|
[c12222] | 155 | gmp_float* r= new gmp_float( (*(gmp_float*)a) + (*(gmp_float*)b) ); |
---|
[35aab3] | 156 | return (number)r; |
---|
| 157 | } |
---|
| 158 | |
---|
| 159 | /*2 |
---|
| 160 | * u:= a - b |
---|
| 161 | */ |
---|
[58aa457] | 162 | number ngfSub (number a, number b, const coeffs R) |
---|
[35aab3] | 163 | { |
---|
[210852] | 164 | assume( getCoeffType(R) == ID ); |
---|
| 165 | |
---|
[c12222] | 166 | gmp_float* r= new gmp_float( (*(gmp_float*)a) - (*(gmp_float*)b) ); |
---|
[35aab3] | 167 | return (number)r; |
---|
| 168 | } |
---|
| 169 | |
---|
| 170 | /*2 |
---|
| 171 | * u := a * b |
---|
| 172 | */ |
---|
[58aa457] | 173 | number ngfMult (number a, number b, const coeffs R) |
---|
[35aab3] | 174 | { |
---|
[210852] | 175 | assume( getCoeffType(R) == ID ); |
---|
| 176 | |
---|
[c12222] | 177 | gmp_float* r= new gmp_float( (*(gmp_float*)a) * (*(gmp_float*)b) ); |
---|
[35aab3] | 178 | return (number)r; |
---|
| 179 | } |
---|
| 180 | |
---|
| 181 | /*2 |
---|
| 182 | * u := a / b |
---|
| 183 | */ |
---|
[58aa457] | 184 | number ngfDiv (number a, number b, const coeffs r) |
---|
[35aab3] | 185 | { |
---|
[210852] | 186 | assume( getCoeffType(r) == ID ); |
---|
| 187 | |
---|
[c12222] | 188 | if ( ((gmp_float*)b)->isZero() ) |
---|
[35aab3] | 189 | { |
---|
[b7e838] | 190 | // a/0 = error |
---|
| 191 | WerrorS(nDivBy0); |
---|
[35aab3] | 192 | return NULL; |
---|
| 193 | } |
---|
[58aa457] | 194 | gmp_float* f= new gmp_float( (*(gmp_float*)a) / (*(gmp_float*)b) ); |
---|
| 195 | return (number)f; |
---|
[35aab3] | 196 | } |
---|
| 197 | |
---|
| 198 | /*2 |
---|
| 199 | * u:= x ^ exp |
---|
| 200 | */ |
---|
[58aa457] | 201 | number ngfPower (number x, int exp, const coeffs r) |
---|
[35aab3] | 202 | { |
---|
[210852] | 203 | assume( getCoeffType(r) == ID ); |
---|
| 204 | |
---|
[35aab3] | 205 | if ( exp == 0 ) |
---|
| 206 | { |
---|
| 207 | gmp_float* n = new gmp_float(1); |
---|
| 208 | *u=(number)n; |
---|
| 209 | return; |
---|
| 210 | } |
---|
[f945d2b] | 211 | else if ( ngfIsZero(x, r) ) // 0^e, e>0 |
---|
[2fa632] | 212 | { |
---|
[58aa457] | 213 | *u=ngfInit(0, r); |
---|
[2fa632] | 214 | return; |
---|
| 215 | } |
---|
| 216 | else if ( exp == 1 ) |
---|
[35aab3] | 217 | { |
---|
[58aa457] | 218 | n_New(u, r); |
---|
[c12222] | 219 | gmp_float* n = new gmp_float(); |
---|
| 220 | *n= *(gmp_float*)x; |
---|
| 221 | *u=(number)n; |
---|
[35aab3] | 222 | return; |
---|
| 223 | } |
---|
[f945d2b] | 224 | return (number) ( new gmp_float( (*(gmp_float*)x)^exp ) ); |
---|
[35aab3] | 225 | } |
---|
| 226 | |
---|
[58aa457] | 227 | /* kept for compatibility reasons, to be deleted */ |
---|
| 228 | void ngfPower ( number x, int exp, number * u, const coeffs r ) |
---|
| 229 | { |
---|
| 230 | *u = ngfPower(x, exp, r); |
---|
| 231 | } |
---|
| 232 | |
---|
| 233 | BOOLEAN ngfIsZero (number a, const coeffs r) |
---|
[35aab3] | 234 | { |
---|
[210852] | 235 | assume( getCoeffType(r) == ID ); |
---|
| 236 | |
---|
[35aab3] | 237 | return ( ((gmp_float*)a)->isZero() ); |
---|
| 238 | } |
---|
| 239 | |
---|
| 240 | /*2 |
---|
[58aa457] | 241 | * za > 0 ? |
---|
[35aab3] | 242 | */ |
---|
[58aa457] | 243 | BOOLEAN ngfGreaterZero (number a, const coeffs r) |
---|
[35aab3] | 244 | { |
---|
[210852] | 245 | assume( getCoeffType(r) == ID ); |
---|
| 246 | |
---|
[58aa457] | 247 | return (((gmp_float*)a)->sign() > 0); |
---|
[35aab3] | 248 | } |
---|
| 249 | |
---|
| 250 | /*2 |
---|
| 251 | * a > b ? |
---|
| 252 | */ |
---|
[58aa457] | 253 | BOOLEAN ngfGreater (number a, number b, const coeffs r) |
---|
[35aab3] | 254 | { |
---|
[210852] | 255 | assume( getCoeffType(r) == ID ); |
---|
| 256 | |
---|
[35aab3] | 257 | return ( (*(gmp_float*)a) > (*(gmp_float*)b) ); |
---|
| 258 | } |
---|
| 259 | |
---|
| 260 | /*2 |
---|
| 261 | * a = b ? |
---|
| 262 | */ |
---|
[58aa457] | 263 | BOOLEAN ngfEqual (number a, number b, const coeffs r) |
---|
[35aab3] | 264 | { |
---|
[210852] | 265 | assume( getCoeffType(r) == ID ); |
---|
| 266 | |
---|
[35aab3] | 267 | return ( (*(gmp_float*)a) == (*(gmp_float*)b) ); |
---|
| 268 | } |
---|
| 269 | |
---|
| 270 | /*2 |
---|
| 271 | * a == 1 ? |
---|
| 272 | */ |
---|
[58aa457] | 273 | BOOLEAN ngfIsOne (number a, const coeffs r) |
---|
[35aab3] | 274 | { |
---|
[210852] | 275 | assume( getCoeffType(r) == ID ); |
---|
| 276 | |
---|
[35aab3] | 277 | return ((gmp_float*)a)->isOne(); |
---|
| 278 | } |
---|
| 279 | |
---|
| 280 | /*2 |
---|
| 281 | * a == -1 ? |
---|
| 282 | */ |
---|
[58aa457] | 283 | BOOLEAN ngfIsMOne (number a, const coeffs r) |
---|
[35aab3] | 284 | { |
---|
[210852] | 285 | assume( getCoeffType(r) == ID ); |
---|
| 286 | |
---|
[35aab3] | 287 | return ((gmp_float*)a)->isMOne(); |
---|
| 288 | } |
---|
| 289 | |
---|
[85e68dd] | 290 | static char * ngfEatFloatNExp(char * s ) |
---|
[35aab3] | 291 | { |
---|
| 292 | char *start= s; |
---|
| 293 | |
---|
| 294 | // eat floats (mantissa) like: |
---|
[df1a7e] | 295 | // 0.394394993, 102.203003008, .300303032, pssibly starting with - |
---|
| 296 | if (*s == '-') s++; |
---|
[35aab3] | 297 | while ((*s >= '0' && *s <= '9')||(*s == '.')) s++; |
---|
| 298 | |
---|
| 299 | // eat the exponent, starts with 'e' followed by '+', '-' |
---|
| 300 | // and digits, like: |
---|
[cb8700] | 301 | // e-202, e+393, accept also E7 |
---|
| 302 | if ( (s != start) && ((*s == 'e')||(*s=='E'))) |
---|
[35aab3] | 303 | { |
---|
[df1a7e] | 304 | if (*s=='E') *s='e'; |
---|
[cb8700] | 305 | s++; // skip 'e'/'E' |
---|
| 306 | if ((*s == '+') || (*s == '-')) s++; |
---|
[35aab3] | 307 | while ((*s >= '0' && *s <= '9')) s++; |
---|
| 308 | } |
---|
| 309 | |
---|
| 310 | return s; |
---|
| 311 | } |
---|
| 312 | |
---|
| 313 | /*2 |
---|
| 314 | * extracts the number a from s, returns the rest |
---|
| 315 | */ |
---|
[58aa457] | 316 | const char * ngfRead (const char * start, number * a, const coeffs r) |
---|
[35aab3] | 317 | { |
---|
[210852] | 318 | assume( getCoeffType(r) == ID ); |
---|
| 319 | |
---|
[85e68dd] | 320 | char *s= (char *)start; |
---|
[35aab3] | 321 | |
---|
| 322 | //Print("%s\n",s); |
---|
| 323 | |
---|
| 324 | s= ngfEatFloatNExp( s ); |
---|
| 325 | |
---|
| 326 | if (*s=='\0') // 0 |
---|
| 327 | { |
---|
| 328 | if ( *(gmp_float**)a == NULL ) (*(gmp_float**)a)= new gmp_float(); |
---|
| 329 | (*(gmp_float**)a)->setFromStr(start); |
---|
| 330 | } |
---|
| 331 | else if (s==start) // 1 |
---|
| 332 | { |
---|
| 333 | if ( *(gmp_float**)a != NULL ) delete (*(gmp_float**)a); |
---|
| 334 | (*(gmp_float**)a)= new gmp_float(1); |
---|
| 335 | } |
---|
| 336 | else |
---|
| 337 | { |
---|
| 338 | gmp_float divisor(1.0); |
---|
| 339 | char *start2=s; |
---|
| 340 | if ( *s == '/' ) |
---|
| 341 | { |
---|
| 342 | s++; |
---|
[85e68dd] | 343 | s= ngfEatFloatNExp( (char *)s ); |
---|
[35aab3] | 344 | if (s!= start2+1) |
---|
| 345 | { |
---|
| 346 | char tmp_c=*s; |
---|
| 347 | *s='\0'; |
---|
| 348 | divisor.setFromStr(start2+1); |
---|
| 349 | *s=tmp_c; |
---|
| 350 | } |
---|
| 351 | else |
---|
| 352 | { |
---|
| 353 | Werror("wrong long real format: %s",start2); |
---|
| 354 | } |
---|
| 355 | } |
---|
| 356 | char c=*start2; |
---|
| 357 | *start2='\0'; |
---|
| 358 | if ( *(gmp_float**)a == NULL ) (*(gmp_float**)a)= new gmp_float(); |
---|
| 359 | (*(gmp_float**)a)->setFromStr(start); |
---|
| 360 | *start2=c; |
---|
[7c961ba] | 361 | if (divisor.isZero()) |
---|
| 362 | { |
---|
| 363 | WerrorS(nDivBy0); |
---|
| 364 | } |
---|
| 365 | else |
---|
| 366 | (**(gmp_float**)a) /= divisor; |
---|
[35aab3] | 367 | } |
---|
| 368 | |
---|
| 369 | return s; |
---|
| 370 | } |
---|
| 371 | |
---|
| 372 | /*2 |
---|
| 373 | * write a floating point number |
---|
| 374 | */ |
---|
[58aa457] | 375 | void ngfWrite (number &a, const coeffs r) |
---|
[35aab3] | 376 | { |
---|
[210852] | 377 | assume( getCoeffType(r) == ID ); |
---|
| 378 | |
---|
| 379 | extern size_t gmp_output_digits; |
---|
[35aab3] | 380 | char *out; |
---|
| 381 | if ( a != NULL ) |
---|
| 382 | { |
---|
[210852] | 383 | out= floatToStr(*(gmp_float*)a, gmp_output_digits, r); |
---|
[e53182] | 384 | StringAppendS(out); |
---|
[7d90aa] | 385 | //omFreeSize((void *)out, (strlen(out)+1)* sizeof(char) ); |
---|
| 386 | omFree( (void *)out ); |
---|
[35aab3] | 387 | } |
---|
| 388 | else |
---|
| 389 | { |
---|
[e53182] | 390 | StringAppendS("0"); |
---|
[35aab3] | 391 | } |
---|
| 392 | } |
---|
| 393 | |
---|
[210852] | 394 | static BOOLEAN ngfCoeffsEqual(const coeffs r, n_coeffType n, int) |
---|
| 395 | { |
---|
| 396 | assume( getCoeffType(r) == ID ); |
---|
| 397 | |
---|
| 398 | return (n == ID); |
---|
| 399 | }; |
---|
| 400 | |
---|
| 401 | void ngfInitChar(coeffs n, int) |
---|
| 402 | { |
---|
| 403 | assume( getCoeffType(n) == ID ); |
---|
| 404 | |
---|
| 405 | n->cfDelete = ngfDelete; |
---|
| 406 | n->nNormalize=ndNormalize; |
---|
| 407 | n->cfInit = ngfInit; |
---|
| 408 | n->n_Int = ngfInt; |
---|
| 409 | n->nAdd = ngfAdd; |
---|
| 410 | n->nSub = ngfSub; |
---|
| 411 | n->nMult = ngfMult; |
---|
| 412 | n->nDiv = ngfDiv; |
---|
| 413 | n->nExactDiv= ngfDiv; |
---|
| 414 | n->nNeg = ngfNeg; |
---|
| 415 | n->nInvers = ngfInvers; |
---|
| 416 | n->cfCopy = ngfCopy; |
---|
| 417 | n->nGreater = ngfGreater; |
---|
| 418 | n->nEqual = ngfEqual; |
---|
| 419 | n->nIsZero = ngfIsZero; |
---|
| 420 | n->nIsOne = ngfIsOne; |
---|
| 421 | n->nIsMOne = ngfIsMOne; |
---|
| 422 | n->nGreaterZero = ngfGreaterZero; |
---|
| 423 | n->cfWrite = ngfWrite; |
---|
| 424 | n->nRead = ngfRead; |
---|
| 425 | n->nPower = ngfPower; |
---|
| 426 | n->cfSetMap = ngfSetMap; |
---|
| 427 | #ifdef LDEBUG |
---|
| 428 | n->nDBTest = ndDBTest; // not yet implemented: ngfDBTest |
---|
| 429 | #endif |
---|
| 430 | |
---|
| 431 | number ngfMapQ(number from, const coeffs aRing, const coeffs r) |
---|
| 432 | { |
---|
| 433 | assume( getCoeffType(r) == ID ); |
---|
| 434 | assume( getCoeffType(aRing) == n_Q ); |
---|
| 435 | |
---|
| 436 | if ( from != NULL ) |
---|
| 437 | { |
---|
| 438 | gmp_float *res=new gmp_float(numberFieldToFloat(from,QTOF)); |
---|
| 439 | return (number)res; |
---|
| 440 | } |
---|
| 441 | else |
---|
| 442 | return NULL; |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | static number ngfMapR(number from, const coeffs aRing, const coeffs r) |
---|
| 446 | { |
---|
| 447 | assume( getCoeffType(r) == ID ); |
---|
| 448 | assume( getCoeffType(aRing) == n_R ); |
---|
| 449 | |
---|
| 450 | if ( from != NULL ) |
---|
| 451 | { |
---|
| 452 | gmp_float *res=new gmp_float((double)nrFloat(from)); |
---|
| 453 | return (number)res; |
---|
| 454 | } |
---|
| 455 | else |
---|
| 456 | return NULL; |
---|
| 457 | } |
---|
| 458 | |
---|
| 459 | static number ngfMapP(number from, const coeffs aRing, const coeffs r) |
---|
| 460 | { |
---|
| 461 | assume( getCoeffType(r) == ID ); |
---|
| 462 | assume( getCoeffType(aRing) == n_Zp ); |
---|
| 463 | |
---|
| 464 | if ( from != NULL ) |
---|
| 465 | return ngfInit(npInt(from,src), dst); |
---|
| 466 | else |
---|
| 467 | return NULL; |
---|
| 468 | } |
---|
| 469 | |
---|
| 470 | static number ngfMapC(number from, const coeffs aRing, const coeffs r) |
---|
| 471 | { |
---|
| 472 | assume( getCoeffType(r) == ID ); |
---|
| 473 | assume( getCoeffType(aRing) == n_long_C ); |
---|
| 474 | |
---|
| 475 | if ( (from != NULL) || ((gmp_complex*)from)->real().isZero() ) |
---|
| 476 | { |
---|
| 477 | gmp_float *res=new gmp_float(((gmp_complex*)from)->real()); |
---|
| 478 | return (number)res; |
---|
| 479 | } |
---|
| 480 | else |
---|
| 481 | return NULL; |
---|
| 482 | } |
---|
| 483 | |
---|
| 484 | nMapFunc ngfSetMap(const coeffs src, const coeffs dst) |
---|
| 485 | { |
---|
| 486 | assume( getCoeffType(dst) == ID ); |
---|
| 487 | |
---|
| 488 | if (nField_is_Q(src)) |
---|
| 489 | { |
---|
| 490 | return ngfMapQ; |
---|
| 491 | } |
---|
| 492 | if (nField_is_long_R(src)) |
---|
| 493 | { |
---|
| 494 | return ngfCopy; |
---|
| 495 | } |
---|
| 496 | if (nField_is_R(src)) |
---|
| 497 | { |
---|
| 498 | return ngfMapR; |
---|
| 499 | } |
---|
| 500 | if (nField_is_long_C(src)) |
---|
| 501 | { |
---|
| 502 | return ngfMapC; |
---|
| 503 | } |
---|
| 504 | if (nField_is_Zp(src)) |
---|
| 505 | { |
---|
| 506 | return ngfMapP; |
---|
| 507 | } |
---|
| 508 | return NULL; |
---|
| 509 | } |
---|
| 510 | |
---|
| 511 | |
---|