dlls/msvcrt/math.c

   1 /*
   2  * msvcrt.dll math functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #include "config.h"
  21
  22 #include <stdio.h>
  23 #define __USE_ISOC9X 1
  24 #define __USE_ISOC99 1
  25 #include <math.h>
  26 #ifdef HAVE_IEEEFP_H
  27 #include <ieeefp.h>
  28 #endif
  29
  30 #include "msvcrt.h"
  31
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  35
  36 #ifndef HAVE_FINITE
  37 #ifndef finite /* Could be a macro */
  38 #ifdef isfinite
  39 #define finite(x) isfinite(x)
  40 #else
  41 #define finite(x) (!isnan(x)) /* At least catch some cases */
  42 #endif
  43 #endif
  44 #endif
  45
  46 #ifndef signbit
  47 #define signbit(x) 0
  48 #endif
  49
  50 typedef int (CDECL *MSVCRT_matherr_func)(struct MSVCRT__exception *);
  51
  52 static MSVCRT_matherr_func MSVCRT_default_matherr_func = NULL;
  53
  54 #ifdef __x86_64__
  55
  56 /*********************************************************************
  57  *      MSVCRT_acosf (MSVCRT.@)
  58  */
  59 float CDECL MSVCRT_acosf( float x )
  60 {
  61   if (x < -1.0 || x > 1.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
  62   /* glibc implements acos() as the FPU equivalent of atan2(sqrt(1 - x ^ 2), x).
  63    * asin() uses a similar construction. This is bad because as x gets nearer to
  64    * 1 the error in the expression "1 - x^2" can get relatively large due to
  65    * cancellation. The sqrt() makes things worse. A safer way to calculate
  66    * acos() is to use atan2(sqrt((1 - x) * (1 + x)), x). */
  67   return atan2f(sqrtf((1 - x) * (1 + x)), x);
  68 }
  69
  70 /*********************************************************************
  71  *      MSVCRT_asinf (MSVCRT.@)
  72  */
  73 float CDECL MSVCRT_asinf( float x )
  74 {
  75   if (x < -1.0 || x > 1.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
  76   return atan2f(x, sqrtf((1 - x) * (1 + x)));
  77 }
  78
  79 /*********************************************************************
  80  *      MSVCRT_atanf (MSVCRT.@)
  81  */
  82 float CDECL MSVCRT_atanf( float x )
  83 {
  84   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
  85   return atanf(x);
  86 }
  87
  88 /*********************************************************************
  89  *              MSVCRT_atan2f (MSVCRT.@)
  90  */
  91 float CDECL MSVCRT_atan2f( float x, float y )
  92 {
  93   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
  94   return atan2f(x,y);
  95 }
  96
  97 /*********************************************************************
  98  *      MSVCRT_cosf (MSVCRT.@)
  99  */
 100 float CDECL MSVCRT_cosf( float x )
 101 {
 102   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 103   return cosf(x);
 104 }
 105
 106 /*********************************************************************
 107  *      MSVCRT_coshf (MSVCRT.@)
 108  */
 109 float CDECL MSVCRT_coshf( float x )
 110 {
 111   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 112   return coshf(x);
 113 }
 114
 115 /*********************************************************************
 116  *      MSVCRT_expf (MSVCRT.@)
 117  */
 118 float CDECL MSVCRT_expf( float x )
 119 {
 120   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 121   return expf(x);
 122 }
 123
 124 /*********************************************************************
 125  *      MSVCRT_fmodf (MSVCRT.@)
 126  */
 127 float CDECL MSVCRT_fmodf( float x, float y )
 128 {
 129   if (!finitef(x) || !finitef(y)) *MSVCRT__errno() = MSVCRT_EDOM;
 130   return fmodf(x,y);
 131 }
 132
 133 /*********************************************************************
 134  *      MSVCRT_logf (MSVCRT.@)
 135  */
 136 float CDECL MSVCRT_logf( float x)
 137 {
 138   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 139   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 140   return logf(x);
 141 }
 142
 143 /*********************************************************************
 144  *      MSVCRT_log10f (MSVCRT.@)
 145  */
 146 float CDECL MSVCRT_log10f( float x )
 147 {
 148   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 149   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 150   return log10f(x);
 151 }
 152
 153 /*********************************************************************
 154  *      MSVCRT_powf (MSVCRT.@)
 155  */
 156 float CDECL MSVCRT_powf( float x, float y )
 157 {
 158   /* FIXME: If x < 0 and y is not integral, set EDOM */
 159   float z = powf(x,y);
 160   if (!finitef(z)) *MSVCRT__errno() = MSVCRT_EDOM;
 161   return z;
 162 }
 163
 164 /*********************************************************************
 165  *      MSVCRT_sinf (MSVCRT.@)
 166  */
 167 float CDECL MSVCRT_sinf( float x )
 168 {
 169   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 170   return sinf(x);
 171 }
 172
 173 /*********************************************************************
 174  *      MSVCRT_sinhf (MSVCRT.@)
 175  */
 176 float CDECL MSVCRT_sinhf( float x )
 177 {
 178   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 179   return sinhf(x);
 180 }
 181
 182 /*********************************************************************
 183  *      MSVCRT_sqrtf (MSVCRT.@)
 184  */
 185 float CDECL MSVCRT_sqrtf( float x )
 186 {
 187   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 188   return sqrtf(x);
 189 }
 190
 191 /*********************************************************************
 192  *      MSVCRT_tanf (MSVCRT.@)
 193  */
 194 float CDECL MSVCRT_tanf( float x )
 195 {
 196   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 197   return tanf(x);
 198 }
 199
 200 /*********************************************************************
 201  *      MSVCRT_tanhf (MSVCRT.@)
 202  */
 203 float CDECL MSVCRT_tanhf( float x )
 204 {
 205   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 206   return tanhf(x);
 207 }
 208
 209 /*********************************************************************
 210  *      ceilf (MSVCRT.@)
 211  */
 212 float CDECL MSVCRT_ceilf( float x )
 213 {
 214   return ceilf(x);
 215 }
 216
 217 /*********************************************************************
 218  *      floorf (MSVCRT.@)
 219  */
 220 float CDECL MSVCRT_floorf( float x )
 221 {
 222   return floorf(x);
 223 }
 224
 225 /*********************************************************************
 226  *      frexpf (MSVCRT.@)
 227  */
 228 float CDECL MSVCRT_frexpf( float x, int *exp )
 229 {
 230   return frexpf( x, exp );
 231 }
 232
 233 /*********************************************************************
 234  *      _scalbf (MSVCRT.@)
 235  */
 236 float CDECL MSVCRT__scalbf(float num, MSVCRT_long power)
 237 {
 238   if (!finitef(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 239   return ldexpf(num, power);
 240 }
 241
 242 /*********************************************************************
 243  *      modff (MSVCRT.@)
 244  */
 245 double CDECL MSVCRT_modff( float x, float *iptr )
 246 {
 247   return modff( x, iptr );
 248 }
 249
 250 #endif
 251
 252 /*********************************************************************
 253  *              MSVCRT_acos (MSVCRT.@)
 254  */
 255 double CDECL MSVCRT_acos( double x )
 256 {
 257   if (x < -1.0 || x > 1.0 || !finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 258   /* glibc implements acos() as the FPU equivalent of atan2(sqrt(1 - x ^ 2), x).
 259    * asin() uses a similar construction. This is bad because as x gets nearer to
 260    * 1 the error in the expression "1 - x^2" can get relatively large due to
 261    * cancellation. The sqrt() makes things worse. A safer way to calculate
 262    * acos() is to use atan2(sqrt((1 - x) * (1 + x)), x). */
 263   return atan2(sqrt((1 - x) * (1 + x)), x);
 264 }
 265
 266 /*********************************************************************
 267  *              MSVCRT_asin (MSVCRT.@)
 268  */
 269 double CDECL MSVCRT_asin( double x )
 270 {
 271   if (x < -1.0 || x > 1.0 || !finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 272   return atan2(x, sqrt((1 - x) * (1 + x)));
 273 }
 274
 275 /*********************************************************************
 276  *              MSVCRT_atan (MSVCRT.@)
 277  */
 278 double CDECL MSVCRT_atan( double x )
 279 {
 280   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 281   return atan(x);
 282 }
 283
 284 /*********************************************************************
 285  *              MSVCRT_atan2 (MSVCRT.@)
 286  */
 287 double CDECL MSVCRT_atan2( double x, double y )
 288 {
 289   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 290   return atan2(x,y);
 291 }
 292
 293 /*********************************************************************
 294  *              MSVCRT_cos (MSVCRT.@)
 295  */
 296 double CDECL MSVCRT_cos( double x )
 297 {
 298   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 299   return cos(x);
 300 }
 301
 302 /*********************************************************************
 303  *              MSVCRT_cosh (MSVCRT.@)
 304  */
 305 double CDECL MSVCRT_cosh( double x )
 306 {
 307   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 308   return cosh(x);
 309 }
 310
 311 /*********************************************************************
 312  *              MSVCRT_exp (MSVCRT.@)
 313  */
 314 double CDECL MSVCRT_exp( double x )
 315 {
 316   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 317   return exp(x);
 318 }
 319
 320 /*********************************************************************
 321  *              MSVCRT_fmod (MSVCRT.@)
 322  */
 323 double CDECL MSVCRT_fmod( double x, double y )
 324 {
 325   if (!finite(x) || !finite(y)) *MSVCRT__errno() = MSVCRT_EDOM;
 326   return fmod(x,y);
 327 }
 328
 329 /*********************************************************************
 330  *              MSVCRT_log (MSVCRT.@)
 331  */
 332 double CDECL MSVCRT_log( double x)
 333 {
 334   if (x < 0.0 || !finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 335   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 336   return log(x);
 337 }
 338
 339 /*********************************************************************
 340  *              MSVCRT_log10 (MSVCRT.@)
 341  */
 342 double CDECL MSVCRT_log10( double x )
 343 {
 344   if (x < 0.0 || !finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 345   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 346   return log10(x);
 347 }
 348
 349 /*********************************************************************
 350  *              MSVCRT_pow (MSVCRT.@)
 351  */
 352 double CDECL MSVCRT_pow( double x, double y )
 353 {
 354   /* FIXME: If x < 0 and y is not integral, set EDOM */
 355   double z = pow(x,y);
 356   if (!finite(z)) *MSVCRT__errno() = MSVCRT_EDOM;
 357   return z;
 358 }
 359
 360 /*********************************************************************
 361  *              MSVCRT_sin (MSVCRT.@)
 362  */
 363 double CDECL MSVCRT_sin( double x )
 364 {
 365   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 366   return sin(x);
 367 }
 368
 369 /*********************************************************************
 370  *              MSVCRT_sinh (MSVCRT.@)
 371  */
 372 double CDECL MSVCRT_sinh( double x )
 373 {
 374   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 375   return sinh(x);
 376 }
 377
 378 /*********************************************************************
 379  *              MSVCRT_sqrt (MSVCRT.@)
 380  */
 381 double CDECL MSVCRT_sqrt( double x )
 382 {
 383   if (x < 0.0 || !finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 384   return sqrt(x);
 385 }
 386
 387 /*********************************************************************
 388  *              MSVCRT_tan (MSVCRT.@)
 389  */
 390 double CDECL MSVCRT_tan( double x )
 391 {
 392   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 393   return tan(x);
 394 }
 395
 396 /*********************************************************************
 397  *              MSVCRT_tanh (MSVCRT.@)
 398  */
 399 double CDECL MSVCRT_tanh( double x )
 400 {
 401   if (!finite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 402   return tanh(x);
 403 }
 404
 405
 406 #if defined(__GNUC__) && defined(__i386__)
 407
 408 #define FPU_DOUBLE(var) double var; \
 409   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var) : )
 410 #define FPU_DOUBLES(var1,var2) double var1,var2; \
 411   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var2) : ); \
 412   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var1) : )
 413
 414 /*********************************************************************
 415  *              _CIacos (MSVCRT.@)
 416  */
 417 double CDECL _CIacos(void)
 418 {
 419   FPU_DOUBLE(x);
 420   return MSVCRT_acos(x);
 421 }
 422
 423 /*********************************************************************
 424  *              _CIasin (MSVCRT.@)
 425  */
 426 double CDECL _CIasin(void)
 427 {
 428   FPU_DOUBLE(x);
 429   return MSVCRT_asin(x);
 430 }
 431
 432 /*********************************************************************
 433  *              _CIatan (MSVCRT.@)
 434  */
 435 double CDECL _CIatan(void)
 436 {
 437   FPU_DOUBLE(x);
 438   return MSVCRT_atan(x);
 439 }
 440
 441 /*********************************************************************
 442  *              _CIatan2 (MSVCRT.@)
 443  */
 444 double CDECL _CIatan2(void)
 445 {
 446   FPU_DOUBLES(x,y);
 447   return MSVCRT_atan2(x,y);
 448 }
 449
 450 /*********************************************************************
 451  *              _CIcos (MSVCRT.@)
 452  */
 453 double CDECL _CIcos(void)
 454 {
 455   FPU_DOUBLE(x);
 456   return MSVCRT_cos(x);
 457 }
 458
 459 /*********************************************************************
 460  *              _CIcosh (MSVCRT.@)
 461  */
 462 double CDECL _CIcosh(void)
 463 {
 464   FPU_DOUBLE(x);
 465   return MSVCRT_cosh(x);
 466 }
 467
 468 /*********************************************************************
 469  *              _CIexp (MSVCRT.@)
 470  */
 471 double CDECL _CIexp(void)
 472 {
 473   FPU_DOUBLE(x);
 474   return MSVCRT_exp(x);
 475 }
 476
 477 /*********************************************************************
 478  *              _CIfmod (MSVCRT.@)
 479  */
 480 double CDECL _CIfmod(void)
 481 {
 482   FPU_DOUBLES(x,y);
 483   return MSVCRT_fmod(x,y);
 484 }
 485
 486 /*********************************************************************
 487  *              _CIlog (MSVCRT.@)
 488  */
 489 double CDECL _CIlog(void)
 490 {
 491   FPU_DOUBLE(x);
 492   return MSVCRT_log(x);
 493 }
 494
 495 /*********************************************************************
 496  *              _CIlog10 (MSVCRT.@)
 497  */
 498 double CDECL _CIlog10(void)
 499 {
 500   FPU_DOUBLE(x);
 501   return MSVCRT_log10(x);
 502 }
 503
 504 /*********************************************************************
 505  *              _CIpow (MSVCRT.@)
 506  */
 507 double CDECL _CIpow(void)
 508 {
 509   FPU_DOUBLES(x,y);
 510   return MSVCRT_pow(x,y);
 511 }
 512
 513 /*********************************************************************
 514  *              _CIsin (MSVCRT.@)
 515  */
 516 double CDECL _CIsin(void)
 517 {
 518   FPU_DOUBLE(x);
 519   return MSVCRT_sin(x);
 520 }
 521
 522 /*********************************************************************
 523  *              _CIsinh (MSVCRT.@)
 524  */
 525 double CDECL _CIsinh(void)
 526 {
 527   FPU_DOUBLE(x);
 528   return MSVCRT_sinh(x);
 529 }
 530
 531 /*********************************************************************
 532  *              _CIsqrt (MSVCRT.@)
 533  */
 534 double CDECL _CIsqrt(void)
 535 {
 536   FPU_DOUBLE(x);
 537   return MSVCRT_sqrt(x);
 538 }
 539
 540 /*********************************************************************
 541  *              _CItan (MSVCRT.@)
 542  */
 543 double CDECL _CItan(void)
 544 {
 545   FPU_DOUBLE(x);
 546   return MSVCRT_tan(x);
 547 }
 548
 549 /*********************************************************************
 550  *              _CItanh (MSVCRT.@)
 551  */
 552 double CDECL _CItanh(void)
 553 {
 554   FPU_DOUBLE(x);
 555   return MSVCRT_tanh(x);
 556 }
 557
 558 #endif /* defined(__GNUC__) && defined(__i386__) */
 559
 560 /*********************************************************************
 561  *              _fpclass (MSVCRT.@)
 562  */
 563 int CDECL _fpclass(double num)
 564 {
 565 #if defined(HAVE_FPCLASS) || defined(fpclass)
 566   switch (fpclass( num ))
 567   {
 568 #ifdef FP_SNAN
 569   case FP_SNAN:  return MSVCRT__FPCLASS_SNAN;
 570 #endif
 571 #ifdef FP_QNAN
 572   case FP_QNAN:  return MSVCRT__FPCLASS_QNAN;
 573 #endif
 574 #ifdef FP_NINF
 575   case FP_NINF:  return MSVCRT__FPCLASS_NINF;
 576 #endif
 577 #ifdef FP_PINF
 578   case FP_PINF:  return MSVCRT__FPCLASS_PINF;
 579 #endif
 580 #ifdef FP_NDENORM
 581   case FP_NDENORM: return MSVCRT__FPCLASS_ND;
 582 #endif
 583 #ifdef FP_PDENORM
 584   case FP_PDENORM: return MSVCRT__FPCLASS_PD;
 585 #endif
 586 #ifdef FP_NZERO
 587   case FP_NZERO: return MSVCRT__FPCLASS_NZ;
 588 #endif
 589 #ifdef FP_PZERO
 590   case FP_PZERO: return MSVCRT__FPCLASS_PZ;
 591 #endif
 592 #ifdef FP_NNORM
 593   case FP_NNORM: return MSVCRT__FPCLASS_NN;
 594 #endif
 595 #ifdef FP_PNORM
 596   case FP_PNORM: return MSVCRT__FPCLASS_PN;
 597 #endif
 598   default: return MSVCRT__FPCLASS_PN;
 599   }
 600 #elif defined (fpclassify)
 601   switch (fpclassify( num ))
 602   {
 603   case FP_NAN: return MSVCRT__FPCLASS_QNAN;
 604   case FP_INFINITE: return signbit(num) ? MSVCRT__FPCLASS_NINF : MSVCRT__FPCLASS_PINF;
 605   case FP_SUBNORMAL: return signbit(num) ?MSVCRT__FPCLASS_ND : MSVCRT__FPCLASS_PD;
 606   case FP_ZERO: return signbit(num) ? MSVCRT__FPCLASS_NZ : MSVCRT__FPCLASS_PZ;
 607   }
 608   return signbit(num) ? MSVCRT__FPCLASS_NN : MSVCRT__FPCLASS_PN;
 609 #else
 610   if (!finite(num))
 611     return MSVCRT__FPCLASS_QNAN;
 612   return num == 0.0 ? MSVCRT__FPCLASS_PZ : (num < 0 ? MSVCRT__FPCLASS_NN : MSVCRT__FPCLASS_PN);
 613 #endif
 614 }
 615
 616 /*********************************************************************
 617  *              _rotl (MSVCRT.@)
 618  */
 619 unsigned int CDECL _rotl(unsigned int num, int shift)
 620 {
 621   shift &= 31;
 622   return (num << shift) | (num >> (32-shift));
 623 }
 624
 625 /*********************************************************************
 626  *              _logb (MSVCRT.@)
 627  */
 628 double CDECL _logb(double num)
 629 {
 630   if (!finite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 631   return logb(num);
 632 }
 633
 634 /*********************************************************************
 635  *              _lrotl (MSVCRT.@)
 636  */
 637 MSVCRT_ulong CDECL MSVCRT__lrotl(MSVCRT_ulong num, int shift)
 638 {
 639   shift &= 0x1f;
 640   return (num << shift) | (num >> (32-shift));
 641 }
 642
 643 /*********************************************************************
 644  *              _lrotr (MSVCRT.@)
 645  */
 646 MSVCRT_ulong CDECL MSVCRT__lrotr(MSVCRT_ulong num, int shift)
 647 {
 648   shift &= 0x1f;
 649   return (num >> shift) | (num << (32-shift));
 650 }
 651
 652 /*********************************************************************
 653  *              _rotr (MSVCRT.@)
 654  */
 655 unsigned int CDECL _rotr(unsigned int num, int shift)
 656 {
 657     shift &= 0x1f;
 658     return (num >> shift) | (num << (32-shift));
 659 }
 660
 661 /*********************************************************************
 662  *              _scalb (MSVCRT.@)
 663  */
 664 double CDECL MSVCRT__scalb(double num, MSVCRT_long power)
 665 {
 666   if (!finite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 667   return ldexp(num, power);
 668 }
 669
 670 /*********************************************************************
 671  *              _hypot (MSVCRT.@)
 672  */
 673 double CDECL _hypot(double x, double y)
 674 {
 675   /* FIXME: errno handling */
 676   return hypot( x, y );
 677 }
 678
 679 /*********************************************************************
 680  *      _hypotf (MSVCRT.@)
 681  */
 682 float CDECL _hypotf(float x, float y)
 683 {
 684   /* FIXME: errno handling */
 685   return hypotf( x, y );
 686 }
 687
 688 /*********************************************************************
 689  *              ceil (MSVCRT.@)
 690  */
 691 double CDECL MSVCRT_ceil( double x )
 692 {
 693   return ceil(x);
 694 }
 695
 696 /*********************************************************************
 697  *              floor (MSVCRT.@)
 698  */
 699 double CDECL MSVCRT_floor( double x )
 700 {
 701   return floor(x);
 702 }
 703
 704 /*********************************************************************
 705  *              fabs (MSVCRT.@)
 706  */
 707 double CDECL MSVCRT_fabs( double x )
 708 {
 709   return fabs(x);
 710 }
 711
 712 /*********************************************************************
 713  *              frexp (MSVCRT.@)
 714  */
 715 double CDECL MSVCRT_frexp( double x, int *exp )
 716 {
 717   return frexp( x, exp );
 718 }
 719
 720 /*********************************************************************
 721  *              modf (MSVCRT.@)
 722  */
 723 double CDECL MSVCRT_modf( double x, double *iptr )
 724 {
 725   return modf( x, iptr );
 726 }
 727
 728 /*********************************************************************
 729  *              _matherr (MSVCRT.@)
 730  */
 731 int CDECL MSVCRT__matherr(struct MSVCRT__exception *e)
 732 {
 733   if (e)
 734     TRACE("(%p = %d, %s, %g %g %g)\n",e, e->type, e->name, e->arg1, e->arg2,
 735           e->retval);
 736   else
 737     TRACE("(null)\n");
 738   if (MSVCRT_default_matherr_func)
 739     return MSVCRT_default_matherr_func(e);
 740   ERR(":Unhandled math error!\n");
 741   return 0;
 742 }
 743
 744 /*********************************************************************
 745  *              __setusermatherr (MSVCRT.@)
 746  */
 747 void CDECL MSVCRT___setusermatherr(MSVCRT_matherr_func func)
 748 {
 749   MSVCRT_default_matherr_func = func;
 750   TRACE(":new matherr handler %p\n", func);
 751 }
 752
 753 /**********************************************************************
 754  *              _statusfp (MSVCRT.@)
 755  */
 756 unsigned int CDECL _statusfp(void)
 757 {
 758    unsigned int retVal = 0;
 759 #if defined(__GNUC__) && defined(__i386__)
 760   unsigned int fpword;
 761
 762   __asm__ __volatile__( "fstsw %0" : "=m" (fpword) : );
 763   if (fpword & 0x1)  retVal |= MSVCRT__SW_INVALID;
 764   if (fpword & 0x2)  retVal |= MSVCRT__SW_DENORMAL;
 765   if (fpword & 0x4)  retVal |= MSVCRT__SW_ZERODIVIDE;
 766   if (fpword & 0x8)  retVal |= MSVCRT__SW_OVERFLOW;
 767   if (fpword & 0x10) retVal |= MSVCRT__SW_UNDERFLOW;
 768   if (fpword & 0x20) retVal |= MSVCRT__SW_INEXACT;
 769 #else
 770   FIXME(":Not implemented!\n");
 771 #endif
 772   return retVal;
 773 }
 774
 775 /*********************************************************************
 776  *              _clearfp (MSVCRT.@)
 777  */
 778 unsigned int CDECL _clearfp(void)
 779 {
 780   unsigned int retVal = _statusfp();
 781 #if defined(__GNUC__) && defined(__i386__)
 782   __asm__ __volatile__( "fnclex" );
 783 #else
 784   FIXME(":Not Implemented\n");
 785 #endif
 786   return retVal;
 787 }
 788
 789 /*********************************************************************
 790  *              __fpecode (MSVCRT.@)
 791  */
 792 int * CDECL __fpecode(void)
 793 {
 794     return &msvcrt_get_thread_data()->fpecode;
 795 }
 796
 797 /*********************************************************************
 798  *              ldexp (MSVCRT.@)
 799  */
 800 double CDECL MSVCRT_ldexp(double num, MSVCRT_long exp)
 801 {
 802   double z = ldexp(num,exp);
 803
 804   if (!finite(z))
 805     *MSVCRT__errno() = MSVCRT_ERANGE;
 806   else if (z == 0 && signbit(z))
 807     z = 0.0; /* Convert -0 -> +0 */
 808   return z;
 809 }
 810
 811 /*********************************************************************
 812  *              _cabs (MSVCRT.@)
 813  */
 814 double CDECL MSVCRT__cabs(struct MSVCRT__complex num)
 815 {
 816   return sqrt(num.x * num.x + num.y * num.y);
 817 }
 818
 819 /*********************************************************************
 820  *              _chgsign (MSVCRT.@)
 821  */
 822 double CDECL _chgsign(double num)
 823 {
 824   /* FIXME: +-infinity,Nan not tested */
 825   return -num;
 826 }
 827
 828 /*********************************************************************
 829  *              _control87 (MSVCRT.@)
 830  */
 831 unsigned int CDECL _control87(unsigned int newval, unsigned int mask)
 832 {
 833 #if defined(__GNUC__) && defined(__i386__)
 834   unsigned int fpword = 0;
 835   unsigned int flags = 0;
 836
 837   TRACE("(%08x, %08x): Called\n", newval, mask);
 838
 839   /* Get fp control word */
 840   __asm__ __volatile__( "fstcw %0" : "=m" (fpword) : );
 841
 842   TRACE("Control word before : %08x\n", fpword);
 843
 844   /* Convert into mask constants */
 845   if (fpword & 0x1)  flags |= MSVCRT__EM_INVALID;
 846   if (fpword & 0x2)  flags |= MSVCRT__EM_DENORMAL;
 847   if (fpword & 0x4)  flags |= MSVCRT__EM_ZERODIVIDE;
 848   if (fpword & 0x8)  flags |= MSVCRT__EM_OVERFLOW;
 849   if (fpword & 0x10) flags |= MSVCRT__EM_UNDERFLOW;
 850   if (fpword & 0x20) flags |= MSVCRT__EM_INEXACT;
 851   switch(fpword & 0xC00) {
 852   case 0xC00: flags |= MSVCRT__RC_UP|MSVCRT__RC_DOWN; break;
 853   case 0x800: flags |= MSVCRT__RC_UP; break;
 854   case 0x400: flags |= MSVCRT__RC_DOWN; break;
 855   }
 856   switch(fpword & 0x300) {
 857   case 0x0:   flags |= MSVCRT__PC_24; break;
 858   case 0x200: flags |= MSVCRT__PC_53; break;
 859   case 0x300: flags |= MSVCRT__PC_64; break;
 860   }
 861   if (fpword & 0x1000) flags |= MSVCRT__IC_AFFINE;
 862
 863   /* Mask with parameters */
 864   flags = (flags & ~mask) | (newval & mask);
 865
 866   /* Convert (masked) value back to fp word */
 867   fpword = 0;
 868   if (flags & MSVCRT__EM_INVALID)    fpword |= 0x1;
 869   if (flags & MSVCRT__EM_DENORMAL)   fpword |= 0x2;
 870   if (flags & MSVCRT__EM_ZERODIVIDE) fpword |= 0x4;
 871   if (flags & MSVCRT__EM_OVERFLOW)   fpword |= 0x8;
 872   if (flags & MSVCRT__EM_UNDERFLOW)  fpword |= 0x10;
 873   if (flags & MSVCRT__EM_INEXACT)    fpword |= 0x20;
 874   switch(flags & (MSVCRT__RC_UP | MSVCRT__RC_DOWN)) {
 875   case MSVCRT__RC_UP|MSVCRT__RC_DOWN: fpword |= 0xC00; break;
 876   case MSVCRT__RC_UP:          fpword |= 0x800; break;
 877   case MSVCRT__RC_DOWN:        fpword |= 0x400; break;
 878   }
 879   switch (flags & (MSVCRT__PC_24 | MSVCRT__PC_53)) {
 880   case MSVCRT__PC_64: fpword |= 0x300; break;
 881   case MSVCRT__PC_53: fpword |= 0x200; break;
 882   case MSVCRT__PC_24: fpword |= 0x0; break;
 883   }
 884   if (flags & MSVCRT__IC_AFFINE) fpword |= 0x1000;
 885
 886   TRACE("Control word after  : %08x\n", fpword);
 887
 888   /* Put fp control word */
 889   __asm__ __volatile__( "fldcw %0" : : "m" (fpword) );
 890
 891   return flags;
 892 #else
 893   FIXME(":Not Implemented!\n");
 894   return 0;
 895 #endif
 896 }
 897
 898 /*********************************************************************
 899  *              _controlfp (MSVCRT.@)
 900  */
 901 unsigned int CDECL _controlfp(unsigned int newval, unsigned int mask)
 902 {
 903 #ifdef __i386__
 904   return _control87( newval, mask & ~MSVCRT__EM_DENORMAL );
 905 #else
 906   FIXME(":Not Implemented!\n");
 907   return 0;
 908 #endif
 909 }
 910
 911 /*********************************************************************
 912  *              _controlfp_s (MSVCRT.@)
 913  */
 914 int CDECL _controlfp_s(unsigned int *cur, unsigned int newval, unsigned int mask)
 915 {
 916 #ifdef __i386__
 917     unsigned int flags;
 918
 919     FIXME("(%p %u %u) semi-stub\n", cur, newval, mask);
 920
 921     flags = _control87( newval, mask & ~MSVCRT__EM_DENORMAL );
 922
 923     if(cur)
 924         *cur = flags;
 925
 926     return 0;
 927 #else
 928     FIXME(":Not Implemented!\n");
 929     return 0;
 930 #endif
 931 }
 932
 933 /*********************************************************************
 934  *              _copysign (MSVCRT.@)
 935  */
 936 double CDECL _copysign(double num, double sign)
 937 {
 938   /* FIXME: Behaviour for Nan/Inf? */
 939   if (sign < 0.0)
 940     return num < 0.0 ? num : -num;
 941   return num < 0.0 ? -num : num;
 942 }
 943
 944 /*********************************************************************
 945  *              _finite (MSVCRT.@)
 946  */
 947 int CDECL _finite(double num)
 948 {
 949   return (finite(num)?1:0); /* See comment for _isnan() */
 950 }
 951
 952 /*********************************************************************
 953  *              _fpreset (MSVCRT.@)
 954  */
 955 void CDECL _fpreset(void)
 956 {
 957 #if defined(__GNUC__) && defined(__i386__)
 958   __asm__ __volatile__( "fninit" );
 959 #else
 960   FIXME(":Not Implemented!\n");
 961 #endif
 962 }
 963
 964 /*********************************************************************
 965  *              _isnan (MSVCRT.@)
 966  */
 967 INT CDECL _isnan(double num)
 968 {
 969   /* Some implementations return -1 for true(glibc), msvcrt/crtdll return 1.
 970    * Do the same, as the result may be used in calculations
 971    */
 972   return isnan(num) ? 1 : 0;
 973 }
 974
 975 /*********************************************************************
 976  *              _j0 (MSVCRT.@)
 977  */
 978 double CDECL _j0(double num)
 979 {
 980   /* FIXME: errno handling */
 981   return j0(num);
 982 }
 983
 984 /*********************************************************************
 985  *              _j1 (MSVCRT.@)
 986  */
 987 double CDECL _j1(double num)
 988 {
 989   /* FIXME: errno handling */
 990   return j1(num);
 991 }
 992
 993 /*********************************************************************
 994  *              jn (MSVCRT.@)
 995  */
 996 double CDECL _jn(int n, double num)
 997 {
 998   /* FIXME: errno handling */
 999   return jn(n, num);
1000 }
1001
1002 /*********************************************************************
1003  *              _y0 (MSVCRT.@)
1004  */
1005 double CDECL _y0(double num)
1006 {
1007   double retval;
1008   if (!finite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1009   retval  = y0(num);
1010   if (_fpclass(retval) == MSVCRT__FPCLASS_NINF)
1011   {
1012     *MSVCRT__errno() = MSVCRT_EDOM;
1013     retval = sqrt(-1);
1014   }
1015   return retval;
1016 }
1017
1018 /*********************************************************************
1019  *              _y1 (MSVCRT.@)
1020  */
1021 double CDECL _y1(double num)
1022 {
1023   double retval;
1024   if (!finite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1025   retval  = y1(num);
1026   if (_fpclass(retval) == MSVCRT__FPCLASS_NINF)
1027   {
1028     *MSVCRT__errno() = MSVCRT_EDOM;
1029     retval = sqrt(-1);
1030   }
1031   return retval;
1032 }
1033
1034 /*********************************************************************
1035  *              _yn (MSVCRT.@)
1036  */
1037 double CDECL _yn(int order, double num)
1038 {
1039   double retval;
1040   if (!finite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1041   retval  = yn(order,num);
1042   if (_fpclass(retval) == MSVCRT__FPCLASS_NINF)
1043   {
1044     *MSVCRT__errno() = MSVCRT_EDOM;
1045     retval = sqrt(-1);
1046   }
1047   return retval;
1048 }
1049
1050 /*********************************************************************
1051  *              _nextafter (MSVCRT.@)
1052  */
1053 double CDECL _nextafter(double num, double next)
1054 {
1055   double retval;
1056   if (!finite(num) || !finite(next)) *MSVCRT__errno() = MSVCRT_EDOM;
1057   retval = nextafter(num,next);
1058   return retval;
1059 }
1060
1061 /*********************************************************************
1062  *              _ecvt (MSVCRT.@)
1063  */
1064 char * CDECL _ecvt( double number, int ndigits, int *decpt, int *sign )
1065 {
1066     int prec, len;
1067     thread_data_t *data = msvcrt_get_thread_data();
1068     /* FIXME: check better for overflow (native supports over 300 chars's) */
1069     ndigits = min( ndigits, 80 - 7); /* 7 : space for dec point, 1 for "e",
1070                                       * 4 for exponent and one for
1071                                       * terminating '\0' */
1072     if (!data->efcvt_buffer)
1073         data->efcvt_buffer = MSVCRT_malloc( 80 ); /* ought to be enough */
1074
1075     if( number < 0) {
1076         *sign = TRUE;
1077         number = -number;
1078     } else
1079         *sign = FALSE;
1080     /* handle cases with zero ndigits or less */
1081     prec = ndigits;
1082     if( prec < 1) prec = 2;
1083     len = snprintf(data->efcvt_buffer, 80, "%.*le", prec - 1, number);
1084     /* take the decimal "point away */
1085     if( prec != 1)
1086         memmove( data->efcvt_buffer + 1, data->efcvt_buffer + 2, len - 1 );
1087     /* take the exponential "e" out */
1088     data->efcvt_buffer[ prec] = '\0';
1089     /* read the exponent */
1090     sscanf( data->efcvt_buffer + prec + 1, "%d", decpt);
1091     (*decpt)++;
1092     /* adjust for some border cases */
1093     if( data->efcvt_buffer[0] == '0')/* value is zero */
1094         *decpt = 0;
1095     /* handle cases with zero ndigits or less */
1096     if( ndigits < 1){
1097         if( data->efcvt_buffer[ 0] >= '5')
1098             (*decpt)++;
1099         data->efcvt_buffer[ 0] = '\0';
1100     }
1101     TRACE("out=\"%s\"\n",data->efcvt_buffer);
1102     return data->efcvt_buffer;
1103 }
1104
1105 /***********************************************************************
1106  *              _fcvt  (MSVCRT.@)
1107  */
1108 char * CDECL _fcvt( double number, int ndigits, int *decpt, int *sign )
1109 {
1110     thread_data_t *data = msvcrt_get_thread_data();
1111     int stop, dec1, dec2;
1112     char *ptr1, *ptr2, *first;
1113     char buf[80]; /* ought to be enough */
1114
1115     if (!data->efcvt_buffer)
1116         data->efcvt_buffer = MSVCRT_malloc( 80 ); /* ought to be enough */
1117
1118     if (number < 0)
1119     {
1120         *sign = 1;
1121         number = -number;
1122     } else *sign = 0;
1123
1124     snprintf(buf, 80, "%.*f", ndigits < 0 ? 0 : ndigits, number);
1125     ptr1 = buf;
1126     ptr2 = data->efcvt_buffer;
1127     first = NULL;
1128     dec1 = 0;
1129     dec2 = 0;
1130
1131     /* For numbers below the requested resolution, work out where
1132        the decimal point will be rather than finding it in the string */
1133     if (number < 1.0 && number > 0.0) {
1134         dec2 = log10(number + 1e-10);
1135         if (-dec2 <= ndigits) dec2 = 0;
1136     }
1137
1138     /* If requested digits is zero or less, we will need to truncate
1139      * the returned string */
1140     if (ndigits < 1) {
1141         stop = strlen(buf) + ndigits;
1142     } else {
1143         stop = strlen(buf);
1144     }
1145
1146     while (*ptr1 == '0') ptr1++; /* Skip leading zeroes */
1147     while (*ptr1 != '\0' && *ptr1 != '.') {
1148         if (!first) first = ptr2;
1149         if ((ptr1 - buf) < stop) {
1150             *ptr2++ = *ptr1++;
1151         } else {
1152             ptr1++;
1153         }
1154         dec1++;
1155     }
1156
1157     if (ndigits > 0) {
1158         ptr1++;
1159         if (!first) {
1160             while (*ptr1 == '0') { /* Process leading zeroes */
1161                 *ptr2++ = *ptr1++;
1162                 dec1--;
1163             }
1164         }
1165         while (*ptr1 != '\0') {
1166             if (!first) first = ptr2;
1167             *ptr2++ = *ptr1++;
1168         }
1169     }
1170
1171     *ptr2 = '\0';
1172
1173     /* We never found a non-zero digit, then our number is either
1174      * smaller than the requested precision, or 0.0 */
1175     if (!first) {
1176         if (number > 0.0) {
1177             first = ptr2;
1178         } else {
1179             first = data->efcvt_buffer;
1180             dec1 = 0;
1181         }
1182     }
1183
1184     *decpt = dec2 ? dec2 : dec1;
1185     return first;
1186 }
1187
1188 /***********************************************************************
1189  *              _gcvt  (MSVCRT.@)
1190  *
1191  * FIXME: uses both E and F.
1192  */
1193 char * CDECL _gcvt( double number, int ndigit, char *buff )
1194 {
1195     sprintf(buff, "%.*E", ndigit, number);
1196     return buff;
1197 }
1198
1199 #include <stdlib.h> /* div_t, ldiv_t */
1200
1201 /*********************************************************************
1202  *              div (MSVCRT.@)
1203  * VERSION
1204  *      [i386] Windows binary compatible - returns the struct in eax/edx.
1205  */
1206 #ifdef __i386__
1207 unsigned __int64 CDECL MSVCRT_div(int num, int denom)
1208 {
1209   div_t dt = div(num,denom);
1210   return ((unsigned __int64)dt.rem << 32) | (unsigned int)dt.quot;
1211 }
1212 #else
1213 /*********************************************************************
1214  *              div (MSVCRT.@)
1215  * VERSION
1216  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
1217  */
1218 MSVCRT_div_t CDECL MSVCRT_div(int num, int denom)
1219 {
1220   div_t dt = div(num,denom);
1221   MSVCRT_div_t     ret;
1222   ret.quot = dt.quot;
1223   ret.rem = dt.rem;
1224
1225   return ret;
1226
1227 }
1228 #endif /* ifdef __i386__ */
1229
1230
1231 /*********************************************************************
1232  *              ldiv (MSVCRT.@)
1233  * VERSION
1234  *      [i386] Windows binary compatible - returns the struct in eax/edx.
1235  */
1236 #ifdef __i386__
1237 unsigned __int64 CDECL MSVCRT_ldiv(MSVCRT_long num, MSVCRT_long denom)
1238 {
1239   ldiv_t ldt = ldiv(num,denom);
1240   return ((unsigned __int64)ldt.rem << 32) | (MSVCRT_ulong)ldt.quot;
1241 }
1242 #else
1243 /*********************************************************************
1244  *              ldiv (MSVCRT.@)
1245  * VERSION
1246  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
1247  */
1248 MSVCRT_ldiv_t CDECL MSVCRT_ldiv(MSVCRT_long num, MSVCRT_long denom)
1249 {
1250   ldiv_t result = ldiv(num,denom);
1251
1252   MSVCRT_ldiv_t ret;
1253   ret.quot = result.quot;
1254   ret.rem = result.rem;
1255
1256   return ret;
1257 }
1258 #endif /* ifdef __i386__ */
1259
1260 #ifdef __i386__
1261
1262 /*********************************************************************
1263  *              _adjust_fdiv (MSVCRT.@)
1264  * Used by the MSVC compiler to work around the Pentium FDIV bug.
1265  */
1266 int MSVCRT__adjust_fdiv = 0;
1267
1268 /***********************************************************************
1269  *              _adj_fdiv_m16i (MSVCRT.@)
1270  *
1271  * NOTE
1272  *    I _think_ this function is intended to work around the Pentium
1273  *    fdiv bug.
1274  */
1275 void __stdcall _adj_fdiv_m16i( short arg )
1276 {
1277   TRACE("(): stub\n");
1278 }
1279
1280 /***********************************************************************
1281  *              _adj_fdiv_m32 (MSVCRT.@)
1282  *
1283  * NOTE
1284  *    I _think_ this function is intended to work around the Pentium
1285  *    fdiv bug.
1286  */
1287 void __stdcall _adj_fdiv_m32( unsigned int arg )
1288 {
1289   TRACE("(): stub\n");
1290 }
1291
1292 /***********************************************************************
1293  *              _adj_fdiv_m32i (MSVCRT.@)
1294  *
1295  * NOTE
1296  *    I _think_ this function is intended to work around the Pentium
1297  *    fdiv bug.
1298  */
1299 void __stdcall _adj_fdiv_m32i( int arg )
1300 {
1301   TRACE("(): stub\n");
1302 }
1303
1304 /***********************************************************************
1305  *              _adj_fdiv_m64 (MSVCRT.@)
1306  *
1307  * NOTE
1308  *    I _think_ this function is intended to work around the Pentium
1309  *    fdiv bug.
1310  */
1311 void __stdcall _adj_fdiv_m64( unsigned __int64 arg )
1312 {
1313   TRACE("(): stub\n");
1314 }
1315
1316 /***********************************************************************
1317  *              _adj_fdiv_r (MSVCRT.@)
1318  * FIXME
1319  *    This function is likely to have the wrong number of arguments.
1320  *
1321  * NOTE
1322  *    I _think_ this function is intended to work around the Pentium
1323  *    fdiv bug.
1324  */
1325 void _adj_fdiv_r(void)
1326 {
1327   TRACE("(): stub\n");
1328 }
1329
1330 /***********************************************************************
1331  *              _adj_fdivr_m16i (MSVCRT.@)
1332  *
1333  * NOTE
1334  *    I _think_ this function is intended to work around the Pentium
1335  *    fdiv bug.
1336  */
1337 void __stdcall _adj_fdivr_m16i( short arg )
1338 {
1339   TRACE("(): stub\n");
1340 }
1341
1342 /***********************************************************************
1343  *              _adj_fdivr_m32 (MSVCRT.@)
1344  *
1345  * NOTE
1346  *    I _think_ this function is intended to work around the Pentium
1347  *    fdiv bug.
1348  */
1349 void __stdcall _adj_fdivr_m32( unsigned int arg )
1350 {
1351   TRACE("(): stub\n");
1352 }
1353
1354 /***********************************************************************
1355  *              _adj_fdivr_m32i (MSVCRT.@)
1356  *
1357  * NOTE
1358  *    I _think_ this function is intended to work around the Pentium
1359  *    fdiv bug.
1360  */
1361 void __stdcall _adj_fdivr_m32i( int arg )
1362 {
1363   TRACE("(): stub\n");
1364 }
1365
1366 /***********************************************************************
1367  *              _adj_fdivr_m64 (MSVCRT.@)
1368  *
1369  * NOTE
1370  *    I _think_ this function is intended to work around the Pentium
1371  *    fdiv bug.
1372  */
1373 void __stdcall _adj_fdivr_m64( unsigned __int64 arg )
1374 {
1375   TRACE("(): stub\n");
1376 }
1377
1378 /***********************************************************************
1379  *              _adj_fpatan (MSVCRT.@)
1380  * FIXME
1381  *    This function is likely to have the wrong number of arguments.
1382  *
1383  * NOTE
1384  *    I _think_ this function is intended to work around the Pentium
1385  *    fdiv bug.
1386  */
1387 void _adj_fpatan(void)
1388 {
1389   TRACE("(): stub\n");
1390 }
1391
1392 /***********************************************************************
1393  *              _adj_fprem (MSVCRT.@)
1394  * FIXME
1395  *    This function is likely to have the wrong number of arguments.
1396  *
1397  * NOTE
1398  *    I _think_ this function is intended to work around the Pentium
1399  *    fdiv bug.
1400  */
1401 void _adj_fprem(void)
1402 {
1403   TRACE("(): stub\n");
1404 }
1405
1406 /***********************************************************************
1407  *              _adj_fprem1 (MSVCRT.@)
1408  * FIXME
1409  *    This function is likely to have the wrong number of arguments.
1410  *
1411  * NOTE
1412  *    I _think_ this function is intended to work around the Pentium
1413  *    fdiv bug.
1414  */
1415 void _adj_fprem1(void)
1416 {
1417   TRACE("(): stub\n");
1418 }
1419
1420 /***********************************************************************
1421  *              _adj_fptan (MSVCRT.@)
1422  * FIXME
1423  *    This function is likely to have the wrong number of arguments.
1424  *
1425  * NOTE
1426  *    I _think_ this function is intended to work around the Pentium
1427  *    fdiv bug.
1428  */
1429 void _adj_fptan(void)
1430 {
1431   TRACE("(): stub\n");
1432 }
1433
1434 /***********************************************************************
1435  *              _safe_fdiv (MSVCRT.@)
1436  * FIXME
1437  *    This function is likely to have the wrong number of arguments.
1438  *
1439  * NOTE
1440  *    I _think_ this function is intended to work around the Pentium
1441  *    fdiv bug.
1442  */
1443 void _safe_fdiv(void)
1444 {
1445   TRACE("(): stub\n");
1446 }
1447
1448 /***********************************************************************
1449  *              _safe_fdivr (MSVCRT.@)
1450  * FIXME
1451  *    This function is likely to have the wrong number of arguments.
1452  *
1453  * NOTE
1454  *    I _think_ this function is intended to work around the Pentium
1455  *    fdiv bug.
1456  */
1457 void _safe_fdivr(void)
1458 {
1459   TRACE("(): stub\n");
1460 }
1461
1462 /***********************************************************************
1463  *              _safe_fprem (MSVCRT.@)
1464  * FIXME
1465  *    This function is likely to have the wrong number of arguments.
1466  *
1467  * NOTE
1468  *    I _think_ this function is intended to work around the Pentium
1469  *    fdiv bug.
1470  */
1471 void _safe_fprem(void)
1472 {
1473   TRACE("(): stub\n");
1474 }
1475
1476 /***********************************************************************
1477  *              _safe_fprem1 (MSVCRT.@)
1478  *
1479  * FIXME
1480  *    This function is likely to have the wrong number of arguments.
1481  *
1482  * NOTE
1483  *    I _think_ this function is intended to work around the Pentium
1484  *    fdiv bug.
1485  */
1486 void _safe_fprem1(void)
1487 {
1488   TRACE("(): stub\n");
1489 }
1490
1491 #endif  /* __i386__ */