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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include "config.h"
  21 #include "msvcrt.h"
  22 #include "ms_errno.h"
  23
  24 #define __USE_ISOC9X 1
  25 #define __USE_ISOC99 1
  26 #include <math.h>
  27 #ifdef HAVE_IEEEFP_H
  28 #include <ieeefp.h>
  29 #endif
  30
  31 #include "msvcrt/stdlib.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  36
  37 #ifndef HAVE_FINITE
  38 #ifndef finite /* Could be a macro */
  39 #ifdef isfinite
  40 #define finite(x) isfinite(x)
  41 #else
  42 #define finite(x) (!isnan(x)) /* At least catch some cases */
  43 #endif
  44 #endif
  45 #endif
  46
  47 #ifndef signbit
  48 #define signbit(x) 0
  49 #endif
  50
  51 /* fpclass constants */
  52 #define _FPCLASS_SNAN 1
  53 #define _FPCLASS_QNAN 2
  54 #define _FPCLASS_NINF 4
  55 #define _FPCLASS_NN   8
  56 #define _FPCLASS_ND   16
  57 #define _FPCLASS_NZ   32
  58 #define _FPCLASS_PZ   64
  59 #define _FPCLASS_PD   128
  60 #define _FPCLASS_PN   256
  61 #define _FPCLASS_PINF 512
  62
  63 /* _statusfp bit flags */
  64 #define _SW_INEXACT    0x1
  65 #define _SW_UNDERFLOW  0x2
  66 #define _SW_OVERFLOW   0x4
  67 #define _SW_ZERODIVIDE 0x8
  68 #define _SW_INVALID    0x10
  69 #define _SW_DENORMAL   0x80000
  70
  71 /* _controlfp masks and bitflags - x86 only so far*/
  72 #ifdef __i386__
  73 #define _MCW_EM        0x8001f
  74 #define _EM_INEXACT    0x1
  75 #define _EM_UNDERFLOW  0x2
  76 #define _EM_OVERFLOW   0x4
  77 #define _EM_ZERODIVIDE 0x8
  78 #define _EM_INVALID    0x10
  79
  80 #define _MCW_RC        0x300
  81 #define _RC_NEAR       0x0
  82 #define _RC_DOWN       0x100
  83 #define _RC_UP         0x200
  84 #define _RC_CHOP       0x300
  85
  86 #define _MCW_PC        0x30000
  87 #define _PC_64         0x0
  88 #define _PC_53         0x10000
  89 #define _PC_24         0x20000
  90
  91 #define _MCW_IC        0x40000
  92 #define _IC_AFFINE     0x40000
  93 #define _IC_PROJECTIVE 0x0
  94
  95 #define _EM_DENORMAL   0x80000
  96 #endif
  97
  98 typedef struct __MSVCRT_complex
  99 {
 100   double real;
 101   double imaginary;
 102 } MSVCRT_complex;
 103
 104 typedef struct __MSVCRT_exception
 105 {
 106   int type;
 107   char *name;
 108   double arg1;
 109   double arg2;
 110   double retval;
 111 } MSVCRT_exception;
 112
 113
 114 typedef int (*MSVCRT_matherr_func)(MSVCRT_exception *);
 115
 116 static MSVCRT_matherr_func MSVCRT_default_matherr_func = NULL;
 117
 118 #if defined(__GNUC__) && defined(__i386__)
 119
 120 #define FPU_DOUBLE(var) double var; \
 121   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var) : )
 122 #define FPU_DOUBLES(var1,var2) double var1,var2; \
 123   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var2) : ); \
 124   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var1) : )
 125
 126 /*********************************************************************
 127  *              _CIacos (MSVCRT.@)
 128  */
 129 double _CIacos(void)
 130 {
 131   FPU_DOUBLE(x);
 132   if (x < -1.0 || x > 1.0 || !finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 133   return acos(x);
 134 }
 135
 136 /*********************************************************************
 137  *              _CIasin (MSVCRT.@)
 138  */
 139 double _CIasin(void)
 140 {
 141   FPU_DOUBLE(x);
 142   if (x < -1.0 || x > 1.0 || !finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 143   return asin(x);
 144 }
 145
 146 /*********************************************************************
 147  *              _CIatan (MSVCRT.@)
 148  */
 149 double _CIatan(void)
 150 {
 151   FPU_DOUBLE(x);
 152   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 153   return atan(x);
 154 }
 155
 156 /*********************************************************************
 157  *              _CIatan2 (MSVCRT.@)
 158  */
 159 double _CIatan2(void)
 160 {
 161   FPU_DOUBLES(x,y);
 162   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 163   return atan2(x,y);
 164 }
 165
 166 /*********************************************************************
 167  *              _CIcos (MSVCRT.@)
 168  */
 169 double _CIcos(void)
 170 {
 171   FPU_DOUBLE(x);
 172   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 173   return cos(x);
 174 }
 175
 176 /*********************************************************************
 177  *              _CIcosh (MSVCRT.@)
 178  */
 179 double _CIcosh(void)
 180 {
 181   FPU_DOUBLE(x);
 182   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 183   return cosh(x);
 184 }
 185
 186 /*********************************************************************
 187  *              _CIexp (MSVCRT.@)
 188  */
 189 double _CIexp(void)
 190 {
 191   FPU_DOUBLE(x);
 192   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 193   return exp(x);
 194 }
 195
 196 /*********************************************************************
 197  *              _CIfmod (MSVCRT.@)
 198  */
 199 double _CIfmod(void)
 200 {
 201   FPU_DOUBLES(x,y);
 202   if (!finite(x) || !finite(y)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 203   return fmod(x,y);
 204 }
 205
 206 /*********************************************************************
 207  *              _CIlog (MSVCRT.@)
 208  */
 209 double _CIlog(void)
 210 {
 211   FPU_DOUBLE(x);
 212   if (x < 0.0 || !finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 213   if (x == 0.0) SET_THREAD_VAR(errno,MSVCRT_ERANGE);
 214   return log(x);
 215 }
 216
 217 /*********************************************************************
 218  *              _CIlog10 (MSVCRT.@)
 219  */
 220 double _CIlog10(void)
 221 {
 222   FPU_DOUBLE(x);
 223   if (x < 0.0 || !finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 224   if (x == 0.0) SET_THREAD_VAR(errno,MSVCRT_ERANGE);
 225   return log10(x);
 226 }
 227
 228 /*********************************************************************
 229  *              _CIpow (MSVCRT.@)
 230  */
 231 double _CIpow(void)
 232 {
 233   double z;
 234   FPU_DOUBLES(x,y);
 235   /* FIXME: If x < 0 and y is not integral, set EDOM */
 236   z = pow(x,y);
 237   if (!finite(z)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 238   return z;
 239 }
 240
 241 /*********************************************************************
 242  *              _CIsin (MSVCRT.@)
 243  */
 244 double _CIsin(void)
 245 {
 246   FPU_DOUBLE(x);
 247   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 248   return sin(x);
 249 }
 250
 251 /*********************************************************************
 252  *              _CIsinh (MSVCRT.@)
 253  */
 254 double _CIsinh(void)
 255 {
 256   FPU_DOUBLE(x);
 257   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 258   return sinh(x);
 259 }
 260
 261 /*********************************************************************
 262  *              _CIsqrt (MSVCRT.@)
 263  */
 264 double _CIsqrt(void)
 265 {
 266   FPU_DOUBLE(x);
 267   if (x < 0.0 || !finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 268   return sqrt(x);
 269 }
 270
 271 /*********************************************************************
 272  *              _CItan (MSVCRT.@)
 273  */
 274 double _CItan(void)
 275 {
 276   FPU_DOUBLE(x);
 277   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 278   return tan(x);
 279 }
 280
 281 /*********************************************************************
 282  *              _CItanh (MSVCRT.@)
 283  */
 284 double _CItanh(void)
 285 {
 286   FPU_DOUBLE(x);
 287   if (!finite(x)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 288   return tanh(x);
 289 }
 290
 291 #else /* defined(__GNUC__) && defined(__i386__) */
 292
 293 /* The above cannot be called on non x86 platforms, stub them for linking */
 294
 295 #define IX86_ONLY(func) double MSVCRT_##func(void) { return 0.0; }
 296
 297 IX86_ONLY(_CIacos)
 298 IX86_ONLY(_CIasin)
 299 IX86_ONLY(_CIatan)
 300 IX86_ONLY(_CIatan2)
 301 IX86_ONLY(_CIcos)
 302 IX86_ONLY(_CIcosh)
 303 IX86_ONLY(_CIexp)
 304 IX86_ONLY(_CIfmod)
 305 IX86_ONLY(_CIlog)
 306 IX86_ONLY(_CIlog10)
 307 IX86_ONLY(_CIpow)
 308 IX86_ONLY(_CIsin)
 309 IX86_ONLY(_CIsinh)
 310 IX86_ONLY(_CIsqrt)
 311 IX86_ONLY(_CItan)
 312 IX86_ONLY(_CItanh)
 313
 314 #endif /* defined(__GNUC__) && defined(__i386__) */
 315
 316 /*********************************************************************
 317  *              _fpclass (MSVCRT.@)
 318  */
 319 int _fpclass(double num)
 320 {
 321 #if defined(HAVE_FPCLASS) || defined(fpclass)
 322   switch (fpclass( num ))
 323   {
 324   case FP_SNAN:  return _FPCLASS_SNAN;
 325   case FP_QNAN:  return _FPCLASS_QNAN;
 326   case FP_NINF:  return _FPCLASS_NINF;
 327   case FP_PINF:  return _FPCLASS_PINF;
 328   case FP_NDENORM: return _FPCLASS_ND;
 329   case FP_PDENORM: return _FPCLASS_PD;
 330   case FP_NZERO: return _FPCLASS_NZ;
 331   case FP_PZERO: return _FPCLASS_PZ;
 332   case FP_NNORM: return _FPCLASS_NN;
 333   }
 334   return _FPCLASS_PN;
 335 #elif defined (fpclassify)
 336   switch (fpclassify( num ))
 337   {
 338   case FP_NAN: return _FPCLASS_QNAN;
 339   case FP_INFINITE: return signbit(num) ? _FPCLASS_NINF : _FPCLASS_PINF;
 340   case FP_SUBNORMAL: return signbit(num) ?_FPCLASS_ND : _FPCLASS_PD;
 341   case FP_ZERO: return signbit(num) ? _FPCLASS_NZ : _FPCLASS_PZ;
 342   }
 343   return signbit(num) ? _FPCLASS_NN : _FPCLASS_PN;
 344 #else
 345   if (!finite(num))
 346     return _FPCLASS_QNAN;
 347   return num == 0.0 ? _FPCLASS_PZ : (num < 0 ? _FPCLASS_NN : _FPCLASS_PN);
 348 #endif
 349 }
 350
 351 /*********************************************************************
 352  *              _rotl (MSVCRT.@)
 353  */
 354 unsigned int _rotl(unsigned int num, int shift)
 355 {
 356   shift &= 31;
 357   return (num << shift) | (num >> (32-shift));
 358 }
 359
 360 /*********************************************************************
 361  *              _logb (MSVCRT.@)
 362  */
 363 double _logb(double num)
 364 {
 365   if (!finite(num)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 366   return logb(num);
 367 }
 368
 369 /*********************************************************************
 370  *              _lrotl (MSVCRT.@)
 371  */
 372 unsigned long _lrotl(unsigned long num, int shift)
 373 {
 374   shift &= 0x1f;
 375   return (num << shift) | (num >> (32-shift));
 376 }
 377
 378 /*********************************************************************
 379  *              _lrotr (MSVCRT.@)
 380  */
 381 unsigned long _lrotr(unsigned long num, int shift)
 382 {
 383   shift &= 0x1f;
 384   return (num >> shift) | (num << (32-shift));
 385 }
 386
 387 /*********************************************************************
 388  *              _rotr (MSVCRT.@)
 389  */
 390 unsigned int _rotr(unsigned int num, int shift)
 391 {
 392     shift &= 0x1f;
 393     return (num >> shift) | (num << (32-shift));
 394 }
 395
 396 /*********************************************************************
 397  *              _scalb (MSVCRT.@)
 398  */
 399 double _scalb(double num, long power)
 400 {
 401   /* Note - Can't forward directly as libc expects y as double */
 402   double dblpower = (double)power;
 403   if (!finite(num)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 404   return scalb(num, dblpower);
 405 }
 406
 407 /*********************************************************************
 408  *              _matherr (MSVCRT.@)
 409  */
 410 int _matherr(MSVCRT_exception *e)
 411 {
 412   if (e)
 413     TRACE("(%p = %d, %s, %g %g %g)\n",e, e->type, e->name, e->arg1, e->arg2,
 414           e->retval);
 415   else
 416     TRACE("(null)\n");
 417   if (MSVCRT_default_matherr_func)
 418     return MSVCRT_default_matherr_func(e);
 419   ERR(":Unhandled math error!\n");
 420   return 0;
 421 }
 422
 423 /*********************************************************************
 424  *              __setusermatherr (MSVCRT.@)
 425  */
 426 void MSVCRT___setusermatherr(MSVCRT_matherr_func func)
 427 {
 428   MSVCRT_default_matherr_func = func;
 429   TRACE(":new matherr handler %p\n", func);
 430 }
 431
 432 /**********************************************************************
 433  *              _statusfp (MSVCRT.@)
 434  */
 435 unsigned int _statusfp(void)
 436 {
 437    unsigned int retVal = 0;
 438 #if defined(__GNUC__) && defined(__i386__)
 439   unsigned int fpword;
 440
 441   __asm__ __volatile__( "fstsw %0" : "=m" (fpword) : );
 442   if (fpword & 0x1)  retVal |= _SW_INVALID;
 443   if (fpword & 0x2)  retVal |= _SW_DENORMAL;
 444   if (fpword & 0x4)  retVal |= _SW_ZERODIVIDE;
 445   if (fpword & 0x8)  retVal |= _SW_OVERFLOW;
 446   if (fpword & 0x10) retVal |= _SW_UNDERFLOW;
 447   if (fpword & 0x20) retVal |= _SW_INEXACT;
 448 #else
 449   FIXME(":Not implemented!\n");
 450 #endif
 451   return retVal;
 452 }
 453
 454 /*********************************************************************
 455  *              _clearfp (MSVCRT.@)
 456  */
 457 unsigned int _clearfp(void)
 458 {
 459   unsigned int retVal = _statusfp();
 460 #if defined(__GNUC__) && defined(__i386__)
 461   __asm__ __volatile__( "fnclex" );
 462 #else
 463   FIXME(":Not Implemented\n");
 464 #endif
 465   return retVal;
 466 }
 467
 468 /*********************************************************************
 469  *              ldexp (MSVCRT.@)
 470  */
 471 double MSVCRT_ldexp(double num, long exp)
 472 {
 473   double z = ldexp(num,exp);
 474
 475   if (!finite(z))
 476     SET_THREAD_VAR(errno,MSVCRT_ERANGE);
 477   else if (z == 0 && signbit(z))
 478     z = 0.0; /* Convert -0 -> +0 */
 479   return z;
 480 }
 481
 482 /*********************************************************************
 483  *              _cabs (MSVCRT.@)
 484  */
 485 double _cabs(MSVCRT_complex num)
 486 {
 487   return sqrt(num.real * num.real + num.imaginary * num.imaginary);
 488 }
 489
 490 /*********************************************************************
 491  *              _chgsign (MSVCRT.@)
 492  */
 493 double _chgsign(double num)
 494 {
 495   /* FIXME: +-infinity,Nan not tested */
 496   return -num;
 497 }
 498
 499 /*********************************************************************
 500  *              _control87 (MSVCRT.@)
 501  */
 502 unsigned int _control87(unsigned int newval, unsigned int mask)
 503 {
 504 #if defined(__GNUC__) && defined(__i386__)
 505   unsigned int fpword = 0;
 506   unsigned int flags = 0;
 507
 508   TRACE("(%08x, %08x): Called\n", newval, mask);
 509
 510   /* Get fp control word */
 511   __asm__ __volatile__( "fstcw %0" : "=m" (fpword) : );
 512
 513   TRACE("Control word before : %08x\n", fpword);
 514
 515   /* Convert into mask constants */
 516   if (fpword & 0x1)  flags |= _EM_INVALID;
 517   if (fpword & 0x2)  flags |= _EM_DENORMAL;
 518   if (fpword & 0x4)  flags |= _EM_ZERODIVIDE;
 519   if (fpword & 0x8)  flags |= _EM_OVERFLOW;
 520   if (fpword & 0x10) flags |= _EM_UNDERFLOW;
 521   if (fpword & 0x20) flags |= _EM_INEXACT;
 522   switch(fpword & 0xC00) {
 523   case 0xC00: flags |= _RC_UP|_RC_DOWN; break;
 524   case 0x800: flags |= _RC_UP; break;
 525   case 0x400: flags |= _RC_DOWN; break;
 526   }
 527   switch(fpword & 0x300) {
 528   case 0x0:   flags |= _PC_24; break;
 529   case 0x200: flags |= _PC_53; break;
 530   case 0x300: flags |= _PC_64; break;
 531   }
 532   if (fpword & 0x1000) flags |= _IC_AFFINE;
 533
 534   /* Mask with parameters */
 535   flags = (flags & ~mask) | (newval & mask);
 536
 537   /* Convert (masked) value back to fp word */
 538   fpword = 0;
 539   if (flags & _EM_INVALID)    fpword |= 0x1;
 540   if (flags & _EM_DENORMAL)   fpword |= 0x2;
 541   if (flags & _EM_ZERODIVIDE) fpword |= 0x4;
 542   if (flags & _EM_OVERFLOW)   fpword |= 0x8;
 543   if (flags & _EM_UNDERFLOW)  fpword |= 0x10;
 544   if (flags & _EM_INEXACT)    fpword |= 0x20;
 545   switch(flags & (_RC_UP | _RC_DOWN)) {
 546   case _RC_UP|_RC_DOWN: fpword |= 0xC00; break;
 547   case _RC_UP:          fpword |= 0x800; break;
 548   case _RC_DOWN:        fpword |= 0x400; break;
 549   }
 550   switch (flags & (_PC_24 | _PC_53)) {
 551   case _PC_64: fpword |= 0x300; break;
 552   case _PC_53: fpword |= 0x200; break;
 553   case _PC_24: fpword |= 0x0; break;
 554   }
 555   if (flags & _IC_AFFINE) fpword |= 0x1000;
 556
 557   TRACE("Control word after  : %08x\n", fpword);
 558
 559   /* Put fp control word */
 560   __asm__ __volatile__( "fldcw %0" : : "m" (fpword) );
 561
 562   return flags;
 563 #else
 564   FIXME(":Not Implemented!\n");
 565   return 0;
 566 #endif
 567 }
 568
 569 /*********************************************************************
 570  *              _controlfp (MSVCRT.@)
 571  */
 572 unsigned int _controlfp(unsigned int newval, unsigned int mask)
 573 {
 574   return _control87( newval, mask & ~_EM_DENORMAL );
 575 }
 576
 577 /*********************************************************************
 578  *              _copysign (MSVCRT.@)
 579  */
 580 double _copysign(double num, double sign)
 581 {
 582   /* FIXME: Behaviour for Nan/Inf? */
 583   if (sign < 0.0)
 584     return num < 0.0 ? num : -num;
 585   return num < 0.0 ? -num : num;
 586 }
 587
 588 /*********************************************************************
 589  *              _finite (MSVCRT.@)
 590  */
 591 int  _finite(double num)
 592 {
 593   return (finite(num)?1:0); /* See comment for _isnan() */
 594 }
 595
 596 /*********************************************************************
 597  *              _fpreset (MSVCRT.@)
 598  */
 599 void _fpreset(void)
 600 {
 601 #if defined(__GNUC__) && defined(__i386__)
 602   __asm__ __volatile__( "fninit" );
 603 #else
 604   FIXME(":Not Implemented!\n");
 605 #endif
 606 }
 607
 608 /*********************************************************************
 609  *              _isnan (MSVCRT.@)
 610  */
 611 INT  _isnan(double num)
 612 {
 613   /* Some implementations return -1 for true(glibc), msvcrt/crtdll return 1.
 614    * Do the same, as the result may be used in calculations
 615    */
 616   return isnan(num) ? 1 : 0;
 617 }
 618
 619 /*********************************************************************
 620  *              _y0 (MSVCRT.@)
 621  */
 622 double _y0(double num)
 623 {
 624   double retval;
 625   if (!finite(num)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 626   retval  = y0(num);
 627   if (_fpclass(retval) == _FPCLASS_NINF)
 628   {
 629     SET_THREAD_VAR(errno,MSVCRT_EDOM);
 630     retval = sqrt(-1);
 631   }
 632   return retval;
 633 }
 634
 635 /*********************************************************************
 636  *              _y1 (MSVCRT.@)
 637  */
 638 double _y1(double num)
 639 {
 640   double retval;
 641   if (!finite(num)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 642   retval  = y1(num);
 643   if (_fpclass(retval) == _FPCLASS_NINF)
 644   {
 645     SET_THREAD_VAR(errno,MSVCRT_EDOM);
 646     retval = sqrt(-1);
 647   }
 648   return retval;
 649 }
 650
 651 /*********************************************************************
 652  *              _yn (MSVCRT.@)
 653  */
 654 double _yn(int order, double num)
 655 {
 656   double retval;
 657   if (!finite(num)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 658   retval  = yn(order,num);
 659   if (_fpclass(retval) == _FPCLASS_NINF)
 660   {
 661     SET_THREAD_VAR(errno,MSVCRT_EDOM);
 662     retval = sqrt(-1);
 663   }
 664   return retval;
 665 }
 666
 667 /*********************************************************************
 668  *              _nextafter (MSVCRT.@)
 669  */
 670 double _nextafter(double num, double next)
 671 {
 672   double retval;
 673   if (!finite(num) || !finite(next)) SET_THREAD_VAR(errno,MSVCRT_EDOM);
 674   retval = nextafter(num,next);
 675   return retval;
 676 }
 677
 678 #include <stdlib.h> /* div_t, ldiv_t */
 679
 680 /*********************************************************************
 681  *              div (MSVCRT.@)
 682  * VERSION
 683  *      [i386] Windows binary compatible - returns the struct in eax/edx.
 684  */
 685 #ifdef __i386__
 686 LONGLONG MSVCRT_div(int num, int denom)
 687 {
 688   LONGLONG retval;
 689   div_t dt = div(num,denom);
 690   retval = ((LONGLONG)dt.rem << 32) | dt.quot;
 691   return retval;
 692 }
 693 #else
 694 /*********************************************************************
 695  *              div (MSVCRT.@)
 696  * VERSION
 697  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
 698  */
 699 MSVCRT_div_t MSVCRT_div(int num, int denom)
 700 {
 701   return div(num,denom);
 702 }
 703 #endif /* ifdef __i386__ */
 704
 705
 706 /*********************************************************************
 707  *              ldiv (MSVCRT.@)
 708  * VERSION
 709  *      [i386] Windows binary compatible - returns the struct in eax/edx.
 710  */
 711 #ifdef __i386__
 712 ULONGLONG MSVCRT_ldiv(long num, long denom)
 713 {
 714   ULONGLONG retval;
 715   ldiv_t ldt = ldiv(num,denom);
 716   retval = ((ULONGLONG)ldt.rem << 32) | (ULONG)ldt.quot;
 717   return retval;
 718 }
 719 #else
 720 /*********************************************************************
 721  *              ldiv (MSVCRT.@)
 722  * VERSION
 723  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
 724  */
 725 MSVCRT_ldiv_t MSVCRT_ldiv(long num, long denom)
 726 {
 727   return ldiv(num,denom);
 728 }
 729 #endif /* ifdef __i386__ */
 730
 731 /***********************************************************************
 732  *              _adj_fdiv_m16i (MSVCRT.@)
 733  * FIXME
 734  *    This function is likely to have the wrong number of arguments.
 735  *
 736  * NOTE
 737  *    I _think_ this function is intended to work around the Pentium
 738  *    fdiv bug.
 739  */
 740 void _adj_fdiv_m16i(void)
 741 {
 742   TRACE("(): stub\n");
 743 }
 744
 745 /***********************************************************************
 746  *              _adj_fdiv_m32 (MSVCRT.@)
 747  * FIXME
 748  *    This function is likely to have the wrong number of arguments.
 749  *
 750  * NOTE
 751  *    I _think_ this function is intended to work around the Pentium
 752  *    fdiv bug.
 753  */
 754 void _adj_fdiv_m32(void)
 755 {
 756   TRACE("(): stub\n");
 757 }
 758
 759 /***********************************************************************
 760  *              _adj_fdiv_m32i (MSVCRT.@)
 761  * FIXME
 762  *    This function is likely to have the wrong number of arguments.
 763  *
 764  * NOTE
 765  *    I _think_ this function is intended to work around the Pentium
 766  *    fdiv bug.
 767  */
 768 void _adj_fdiv_m32i(void)
 769 {
 770   TRACE("(): stub\n");
 771 }
 772
 773 /***********************************************************************
 774  *              _adj_fdiv_m64 (MSVCRT.@)
 775  * FIXME
 776  *    This function is likely to have the wrong number of arguments.
 777  *
 778  * NOTE
 779  *    I _think_ this function is intended to work around the Pentium
 780  *    fdiv bug.
 781  */
 782 void _adj_fdiv_m64(void)
 783 {
 784   TRACE("(): stub\n");
 785 }
 786
 787 /***********************************************************************
 788  *              _adj_fdiv_r (MSVCRT.@)
 789  * FIXME
 790  *    This function is likely to have the wrong number of arguments.
 791  *
 792  * NOTE
 793  *    I _think_ this function is intended to work around the Pentium
 794  *    fdiv bug.
 795  */
 796 void _adj_fdiv_r(void)
 797 {
 798   TRACE("(): stub\n");
 799 }
 800
 801 /***********************************************************************
 802  *              _adj_fdivr_m16i (MSVCRT.@)
 803  * FIXME
 804  *    This function is likely to have the wrong number of arguments.
 805  *
 806  * NOTE
 807  *    I _think_ this function is intended to work around the Pentium
 808  *    fdiv bug.
 809  */
 810 void _adj_fdivr_m16i(void)
 811 {
 812   TRACE("(): stub\n");
 813 }
 814
 815 /***********************************************************************
 816  *              _adj_fdivr_m32 (MSVCRT.@)
 817  * FIXME
 818  *    This function is likely to have the wrong number of arguments.
 819  *
 820  * NOTE
 821  *    I _think_ this function is intended to work around the Pentium
 822  *    fdiv bug.
 823  */
 824 void _adj_fdivr_m32(void)
 825 {
 826   TRACE("(): stub\n");
 827 }
 828
 829 /***********************************************************************
 830  *              _adj_fdivr_m32i (MSVCRT.@)
 831  * FIXME
 832  *    This function is likely to have the wrong number of arguments.
 833  *
 834  * NOTE
 835  *    I _think_ this function is intended to work around the Pentium
 836  *    fdiv bug.
 837  */
 838 void _adj_fdivr_m32i(void)
 839 {
 840   TRACE("(): stub\n");
 841 }
 842
 843 /***********************************************************************
 844  *              _adj_fdivr_m64 (MSVCRT.@)
 845  * FIXME
 846  *    This function is likely to have the wrong number of arguments.
 847  *
 848  * NOTE
 849  *    I _think_ this function is intended to work around the Pentium
 850  *    fdiv bug.
 851  */
 852 void _adj_fdivr_m64(void)
 853 {
 854   TRACE("(): stub\n");
 855 }
 856
 857 /***********************************************************************
 858  *              _adj_fpatan (MSVCRT.@)
 859  * FIXME
 860  *    This function is likely to have the wrong number of arguments.
 861  *
 862  * NOTE
 863  *    I _think_ this function is intended to work around the Pentium
 864  *    fdiv bug.
 865  */
 866 void _adj_fpatan(void)
 867 {
 868   TRACE("(): stub\n");
 869 }
 870
 871 /***********************************************************************
 872  *              _adj_fprem (MSVCRT.@)
 873  * FIXME
 874  *    This function is likely to have the wrong number of arguments.
 875  *
 876  * NOTE
 877  *    I _think_ this function is intended to work around the Pentium
 878  *    fdiv bug.
 879  */
 880 void _adj_fprem(void)
 881 {
 882   TRACE("(): stub\n");
 883 }
 884
 885 /***********************************************************************
 886  *              _adj_fprem1 (MSVCRT.@)
 887  * FIXME
 888  *    This function is likely to have the wrong number of arguments.
 889  *
 890  * NOTE
 891  *    I _think_ this function is intended to work around the Pentium
 892  *    fdiv bug.
 893  */
 894 void _adj_fprem1(void)
 895 {
 896   TRACE("(): stub\n");
 897 }
 898
 899 /***********************************************************************
 900  *              _adj_fptan (MSVCRT.@)
 901  * FIXME
 902  *    This function is likely to have the wrong number of arguments.
 903  *
 904  * NOTE
 905  *    I _think_ this function is intended to work around the Pentium
 906  *    fdiv bug.
 907  */
 908 void _adj_fptan(void)
 909 {
 910   TRACE("(): stub\n");
 911 }
 912
 913 /***********************************************************************
 914  *              _adjust_fdiv (MSVCRT.@)
 915  * FIXME
 916  *    I _think_ this function should be a variable indicating whether
 917  *    Pentium fdiv bug safe code should be used.
 918  */
 919 void _adjust_fdiv(void)
 920 {
 921   TRACE("(): stub\n");
 922 }
 923
 924 /***********************************************************************
 925  *              _safe_fdiv (MSVCRT.@)
 926  * FIXME
 927  *    This function is likely to have the wrong number of arguments.
 928  *
 929  * NOTE
 930  *    I _think_ this function is intended to work around the Pentium
 931  *    fdiv bug.
 932  */
 933 void _safe_fdiv(void)
 934 {
 935   TRACE("(): stub\n");
 936 }
 937
 938 /***********************************************************************
 939  *              _safe_fdivr (MSVCRT.@)
 940  * FIXME
 941  *    This function is likely to have the wrong number of arguments.
 942  *
 943  * NOTE
 944  *    I _think_ this function is intended to work around the Pentium
 945  *    fdiv bug.
 946  */
 947 void _safe_fdivr(void)
 948 {
 949   TRACE("(): stub\n");
 950 }
 951
 952 /***********************************************************************
 953  *              _safe_fprem (MSVCRT.@)
 954  * FIXME
 955  *    This function is likely to have the wrong number of arguments.
 956  *
 957  * NOTE
 958  *    I _think_ this function is intended to work around the Pentium
 959  *    fdiv bug.
 960  */
 961 void _safe_fprem(void)
 962 {
 963   TRACE("(): stub\n");
 964 }
 965
 966 /***********************************************************************
 967  *              _safe_fprem1 (MSVCRT.@)
 968  *
 969  * FIXME
 970  *    This function is likely to have the wrong number of arguments.
 971  *
 972  * NOTE
 973  *    I _think_ this function is intended to work around the Pentium
 974  *    fdiv bug.
 975  */
 976 void _safe_fprem1(void)
 977 {
 978   TRACE("(): stub\n");
 979 }
 980
 981