[35aab3] | 1 | /**************************************** |
---|
| 2 | * Computer Algebra System SINGULAR * |
---|
| 3 | ****************************************/ |
---|
| 4 | /* $Id: ipconv.cc,v 1.1.1.1 2003-10-06 12:15:55 Singular Exp $ */ |
---|
| 5 | /* |
---|
| 6 | * ABSTRACT: automatic type conversions |
---|
| 7 | */ |
---|
| 8 | |
---|
| 9 | #include "mod2.h" |
---|
| 10 | #include "tok.h" |
---|
| 11 | #include "ipid.h" |
---|
| 12 | #include "intvec.h" |
---|
| 13 | #include "omalloc.h" |
---|
| 14 | #include "febase.h" |
---|
| 15 | #include "polys.h" |
---|
| 16 | #include "ideals.h" |
---|
| 17 | #include "subexpr.h" |
---|
| 18 | #include "numbers.h" |
---|
| 19 | #include "matpol.h" |
---|
| 20 | #include "silink.h" |
---|
| 21 | #include "syz.h" |
---|
| 22 | #include "ipconv.h" |
---|
| 23 | |
---|
| 24 | typedef void * (*iiConvertProc)(void * data); |
---|
| 25 | struct sConvertTypes |
---|
| 26 | { |
---|
| 27 | int i_typ; |
---|
| 28 | int o_typ; |
---|
| 29 | iiConvertProc p; |
---|
| 30 | }; |
---|
| 31 | |
---|
| 32 | // all of these static conversion routines work destructive on their input |
---|
| 33 | |
---|
| 34 | static void * iiI2P(void *data) |
---|
| 35 | { |
---|
| 36 | poly p=pISet((int)data); |
---|
| 37 | return (void *)p; |
---|
| 38 | } |
---|
| 39 | |
---|
| 40 | static void * iiI2V(void *data) |
---|
| 41 | { |
---|
| 42 | poly p=pISet((int)data); |
---|
| 43 | if (p!=NULL) pSetComp(p,1); |
---|
| 44 | return (void *)p; |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | static void * iiI2Id(void *data) |
---|
| 48 | { |
---|
| 49 | ideal I=idInit(1,1); |
---|
| 50 | I->m[0]=pISet((int)data); |
---|
| 51 | return (void *)I; |
---|
| 52 | } |
---|
| 53 | |
---|
| 54 | static void * iiP2V(void *data) |
---|
| 55 | { |
---|
| 56 | poly p=(poly)data; |
---|
| 57 | if (p!=NULL) pSetCompP(p,1); |
---|
| 58 | return (void *)p; |
---|
| 59 | } |
---|
| 60 | |
---|
| 61 | static void * iiP2Id(void *data) |
---|
| 62 | { |
---|
| 63 | ideal I=idInit(1,1); |
---|
| 64 | |
---|
| 65 | I->m[0]=(poly)data; |
---|
| 66 | if (data!=NULL) |
---|
| 67 | { |
---|
| 68 | poly p=(poly)data; |
---|
| 69 | if (pGetComp(p)!=0) I->rank=pMaxComp(p); |
---|
| 70 | #ifdef DRING |
---|
| 71 | else if (pDRING) |
---|
| 72 | { |
---|
| 73 | while (p!=NULL) |
---|
| 74 | { |
---|
| 75 | pdSetDFlag(p,1); |
---|
| 76 | pSetm(p); |
---|
| 77 | pIter(p); |
---|
| 78 | } |
---|
| 79 | } |
---|
| 80 | #endif |
---|
| 81 | } |
---|
| 82 | return (void *)I; |
---|
| 83 | } |
---|
| 84 | |
---|
| 85 | static void * iiV2Ma(void *data) |
---|
| 86 | { |
---|
| 87 | matrix m=(matrix)idVec2Ideal((poly)data); |
---|
| 88 | int h=MATCOLS(m); |
---|
| 89 | MATCOLS(m)=MATROWS(m); |
---|
| 90 | MATROWS(m)=h; |
---|
| 91 | m->rank=h; |
---|
| 92 | pDelete((poly *)&data); |
---|
| 93 | return (void *)m; |
---|
| 94 | } |
---|
| 95 | |
---|
| 96 | static void * iiDummy(void *data) |
---|
| 97 | { |
---|
| 98 | return data; |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | static void * iiMo2Ma(void *data) |
---|
| 102 | { |
---|
| 103 | void *res=idModule2Matrix((ideal)data); |
---|
| 104 | return res; |
---|
| 105 | } |
---|
| 106 | |
---|
| 107 | static void * iiMa2Mo(void *data) |
---|
| 108 | { |
---|
| 109 | void *res=idMatrix2Module((matrix)data); |
---|
| 110 | return res; |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | static void * iiI2Iv(void *data) |
---|
| 114 | { |
---|
| 115 | intvec *iv=new intvec((int)data,(int)data); |
---|
| 116 | return (void *)iv; |
---|
| 117 | } |
---|
| 118 | |
---|
| 119 | static void * iiI2N(void *data) |
---|
| 120 | { |
---|
| 121 | number n=nInit((int)data); |
---|
| 122 | return (void *)n; |
---|
| 123 | } |
---|
| 124 | |
---|
| 125 | static void * iiIm2Ma(void *data) |
---|
| 126 | { |
---|
| 127 | int i, j; |
---|
| 128 | intvec *iv = (intvec *)data; |
---|
| 129 | matrix m = mpNew(iv->rows(), iv->cols()); |
---|
| 130 | |
---|
| 131 | for (i=iv->rows(); i>0; i--) |
---|
| 132 | { |
---|
| 133 | for (j=iv->cols(); j>0; j--) |
---|
| 134 | { |
---|
| 135 | MATELEM(m, i, j) = pISet(IMATELEM(*iv, i, j)); |
---|
| 136 | } |
---|
| 137 | } |
---|
| 138 | delete iv; |
---|
| 139 | return (void *)m; |
---|
| 140 | } |
---|
| 141 | |
---|
| 142 | static void * iiN2P(void *data) |
---|
| 143 | { |
---|
| 144 | poly p=NULL; |
---|
| 145 | if (!nIsZero((number)data)) |
---|
| 146 | { |
---|
| 147 | p=pOne(); |
---|
| 148 | pSetCoeff(p,(number)data); |
---|
| 149 | } |
---|
| 150 | //else |
---|
| 151 | //{ |
---|
| 152 | // nDelete((number *)&data); |
---|
| 153 | //} |
---|
| 154 | return (void *)p; |
---|
| 155 | } |
---|
| 156 | |
---|
| 157 | static void * iiN2Ma(void *data) |
---|
| 158 | { |
---|
| 159 | ideal I=idInit(1,1); |
---|
| 160 | if (!nIsZero((number)data)) |
---|
| 161 | { |
---|
| 162 | poly p=pOne(); |
---|
| 163 | pSetCoeff(p,(number)data); |
---|
| 164 | I->m[0]=p; |
---|
| 165 | } |
---|
| 166 | //else |
---|
| 167 | //{ |
---|
| 168 | // nDelete((number *)&data); |
---|
| 169 | //} |
---|
| 170 | return (void *)I; |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | static void * iiS2Link(void *data) |
---|
| 174 | { |
---|
| 175 | si_link l=(si_link)omAlloc0Bin(ip_link_bin); |
---|
| 176 | slInit(l, (char *) data); |
---|
| 177 | omFree((ADDRESS)data); |
---|
| 178 | return (void *)l; |
---|
| 179 | } |
---|
| 180 | |
---|
| 181 | static void * iiR2L(void * data) |
---|
| 182 | { |
---|
| 183 | syStrategy tmp=(syStrategy)data; |
---|
| 184 | return (void *)syConvRes(tmp,TRUE); |
---|
| 185 | } |
---|
| 186 | |
---|
| 187 | static void * iiL2R(void * data) |
---|
| 188 | { |
---|
| 189 | return (void *)syConvList((lists)data,TRUE); |
---|
| 190 | } |
---|
| 191 | |
---|
| 192 | // |
---|
| 193 | // automatic conversions: |
---|
| 194 | // |
---|
| 195 | struct sConvertTypes dConvertTypes[] = |
---|
| 196 | { |
---|
| 197 | // input type output type convert procedure |
---|
| 198 | // int -> number |
---|
| 199 | { INT_CMD, NUMBER_CMD, iiI2N }, |
---|
| 200 | // int -> poly |
---|
| 201 | { INT_CMD, POLY_CMD, iiI2P }, |
---|
| 202 | // int -> vector |
---|
| 203 | { INT_CMD, VECTOR_CMD, iiI2V }, |
---|
| 204 | // int -> ideal |
---|
| 205 | { INT_CMD, IDEAL_CMD, iiI2Id }, |
---|
| 206 | // int -> matrix |
---|
| 207 | { INT_CMD, MATRIX_CMD, iiI2Id }, |
---|
| 208 | // int -> intvec |
---|
| 209 | { INT_CMD, INTVEC_CMD, iiI2Iv }, |
---|
| 210 | // intvec -> intmat |
---|
| 211 | { INTVEC_CMD, INTMAT_CMD, iiDummy}, |
---|
| 212 | // intvec -> matrix |
---|
| 213 | { INTVEC_CMD, MATRIX_CMD, iiIm2Ma }, |
---|
| 214 | // intmat -> matrix |
---|
| 215 | { INTMAT_CMD, MATRIX_CMD, iiIm2Ma }, |
---|
| 216 | // number -> poly |
---|
| 217 | { NUMBER_CMD, POLY_CMD, iiN2P }, |
---|
| 218 | // number -> matrix |
---|
| 219 | { NUMBER_CMD, MATRIX_CMD, iiN2Ma }, |
---|
| 220 | // number -> ideal |
---|
| 221 | // number -> vector |
---|
| 222 | // number -> module |
---|
| 223 | // poly -> number |
---|
| 224 | // poly -> ideal |
---|
| 225 | { POLY_CMD, IDEAL_CMD, iiP2Id }, |
---|
| 226 | // poly -> vector |
---|
| 227 | { POLY_CMD, VECTOR_CMD, iiP2V }, |
---|
| 228 | // poly -> matrix |
---|
| 229 | { POLY_CMD, MATRIX_CMD, iiP2Id }, |
---|
| 230 | // vector -> module |
---|
| 231 | { VECTOR_CMD, MODUL_CMD, iiP2Id }, |
---|
| 232 | // vector -> matrix |
---|
| 233 | { VECTOR_CMD, MATRIX_CMD, iiV2Ma }, |
---|
| 234 | // ideal -> module |
---|
| 235 | { IDEAL_CMD, MODUL_CMD, iiMa2Mo }, |
---|
| 236 | // ideal -> matrix |
---|
| 237 | { IDEAL_CMD, MATRIX_CMD, iiDummy }, |
---|
| 238 | // module -> matrix |
---|
| 239 | { MODUL_CMD, MATRIX_CMD, iiMo2Ma }, |
---|
| 240 | // matrix -> ideal |
---|
| 241 | // matrix -> module |
---|
| 242 | { MATRIX_CMD, MODUL_CMD, iiMa2Mo }, |
---|
| 243 | // intvec |
---|
| 244 | // link |
---|
| 245 | { STRING_CMD, LINK_CMD, iiS2Link }, |
---|
| 246 | // resolution -> list |
---|
| 247 | { RESOLUTION_CMD, LIST_CMD, iiR2L }, |
---|
| 248 | // list -> resolution |
---|
| 249 | { LIST_CMD, RESOLUTION_CMD, iiL2R }, |
---|
| 250 | // end of list |
---|
| 251 | { 0, 0, NULL } |
---|
| 252 | }; |
---|
| 253 | |
---|
| 254 | /*2 |
---|
| 255 | * try to convert 'input' of type 'inputType' to 'output' of type 'outputType' |
---|
| 256 | * return FALSE on success |
---|
| 257 | */ |
---|
| 258 | BOOLEAN iiConvert (int inputType, int outputType, int index, leftv input, leftv output) |
---|
| 259 | { |
---|
| 260 | memset(output,0,sizeof(sleftv)); |
---|
| 261 | if ((inputType==outputType) |
---|
| 262 | || (outputType==DEF_CMD) |
---|
| 263 | || ((outputType==IDHDL)&&(input->rtyp==IDHDL))) |
---|
| 264 | { |
---|
| 265 | memcpy(output,input,sizeof(*output)); |
---|
| 266 | memset(input,0,sizeof(*input)); |
---|
| 267 | return FALSE; |
---|
| 268 | } |
---|
| 269 | else if (outputType==ANY_TYPE) |
---|
| 270 | { |
---|
| 271 | output->rtyp=ANY_TYPE; |
---|
| 272 | output->data=(char *)input->Typ(); |
---|
| 273 | /* the name of the object:*/ |
---|
| 274 | if (input->e==NULL) |
---|
| 275 | { |
---|
| 276 | if (input->rtyp==IDHDL) |
---|
| 277 | /* preserve name: copy it */ |
---|
| 278 | output->name=omStrDup(IDID((idhdl)(input->data))); |
---|
| 279 | else if (input->name!=NULL) |
---|
| 280 | { |
---|
| 281 | output->name=input->name; |
---|
| 282 | input->name=NULL; |
---|
| 283 | } |
---|
| 284 | else if ((input->rtyp==POLY_CMD) && (input->name==NULL)) |
---|
| 285 | { |
---|
| 286 | if (input->data!=NULL) |
---|
| 287 | { |
---|
| 288 | int nr=pIsPurePower((poly)input->data); |
---|
| 289 | if (nr!=0) |
---|
| 290 | { |
---|
| 291 | if (pGetExp((poly)input->data,nr)==1) |
---|
| 292 | { |
---|
| 293 | output->name=omStrDup(currRing->names[nr-1]); |
---|
| 294 | } |
---|
| 295 | else |
---|
| 296 | { |
---|
| 297 | output->name=(char *)omAlloc(4); |
---|
| 298 | sprintf(output->name,"%c%d",*(currRing->names[nr-1]), |
---|
| 299 | (int)pGetExp((poly)input->data,nr)); |
---|
| 300 | } |
---|
| 301 | } |
---|
| 302 | else if(pIsConstant((poly)input->data)) |
---|
| 303 | { |
---|
| 304 | output->name=nName(pGetCoeff((poly)input->data)); |
---|
| 305 | } |
---|
| 306 | #ifdef TEST |
---|
| 307 | else |
---|
| 308 | { |
---|
| 309 | WerrorS("wrong name, should not happen"); |
---|
| 310 | output->name=omStrDup("?"); |
---|
| 311 | } |
---|
| 312 | #endif |
---|
| 313 | } |
---|
| 314 | } |
---|
| 315 | else if ((input->rtyp==NUMBER_CMD) && (input->name==NULL)) |
---|
| 316 | { |
---|
| 317 | output->name=nName((number)input->data); |
---|
| 318 | } |
---|
| 319 | else |
---|
| 320 | { |
---|
| 321 | /* no need to preserve name: use it */ |
---|
| 322 | output->name=input->name; |
---|
| 323 | memset(input,0,sizeof(*input)); |
---|
| 324 | } |
---|
| 325 | } |
---|
| 326 | output->next=input->next; |
---|
| 327 | input->next=NULL; |
---|
| 328 | return FALSE; |
---|
| 329 | } |
---|
| 330 | if (index!=0) /* iiTestConvert does not returned 'failure' */ |
---|
| 331 | { |
---|
| 332 | index--; |
---|
| 333 | |
---|
| 334 | if((dConvertTypes[index].i_typ==inputType) |
---|
| 335 | &&(dConvertTypes[index].o_typ==outputType)) |
---|
| 336 | { |
---|
| 337 | if ((currRing==NULL) && (outputType>BEGIN_RING) && (outputType<END_RING)) |
---|
| 338 | return TRUE; |
---|
| 339 | output->rtyp=outputType; |
---|
| 340 | output->data=dConvertTypes[index].p(input->CopyD()); |
---|
| 341 | if ((output->data==NULL) |
---|
| 342 | && ((outputType==IDEAL_CMD) |
---|
| 343 | ||(outputType==MODUL_CMD) |
---|
| 344 | ||(outputType==MATRIX_CMD) |
---|
| 345 | ||(outputType==INTVEC_CMD))) |
---|
| 346 | { |
---|
| 347 | return TRUE; |
---|
| 348 | } |
---|
| 349 | output->next=input->next; |
---|
| 350 | input->next=NULL; |
---|
| 351 | return FALSE; |
---|
| 352 | } |
---|
| 353 | } |
---|
| 354 | return TRUE; |
---|
| 355 | } |
---|
| 356 | |
---|
| 357 | /*2 |
---|
| 358 | * try to convert 'inputType' in 'outputType' |
---|
| 359 | * return 0 on failure, an index (<>0) on success |
---|
| 360 | */ |
---|
| 361 | int iiTestConvert (int inputType, int outputType) |
---|
| 362 | { |
---|
| 363 | if ((inputType==outputType) |
---|
| 364 | || (outputType==DEF_CMD) |
---|
| 365 | || (outputType==IDHDL) |
---|
| 366 | || (outputType==ANY_TYPE)) |
---|
| 367 | { |
---|
| 368 | return -1; |
---|
| 369 | } |
---|
| 370 | |
---|
| 371 | if ((currRing==NULL) && (outputType>BEGIN_RING) && (outputType<END_RING)) |
---|
| 372 | return 0; |
---|
| 373 | |
---|
| 374 | // search the list |
---|
| 375 | int i=0; |
---|
| 376 | while (dConvertTypes[i].i_typ!=0) |
---|
| 377 | { |
---|
| 378 | if((dConvertTypes[i].i_typ==inputType) |
---|
| 379 | &&(dConvertTypes[i].o_typ==outputType)) |
---|
| 380 | { |
---|
| 381 | //Print("test convert %d to %d (%s -> %s):%d\n",inputType,outputType, |
---|
| 382 | //Tok2Cmdname(inputType), Tok2Cmdname(outputType),i+1); |
---|
| 383 | return i+1; |
---|
| 384 | } |
---|
| 385 | i++; |
---|
| 386 | } |
---|
| 387 | //Print("test convert %d to %d (%s -> %s):0\n",inputType,outputType, |
---|
| 388 | // Tok2Cmdname(inputType), Tok2Cmdname(outputType)); |
---|
| 389 | return 0; |
---|
| 390 | } |
---|