gnu/dist/gdb6/sim/testsuite/common/fpu-tst.c

   1 #define ASSERT(EXPRESSION) \
   2 do { \
   3   if (!(EXPRESSION)) { \
   4     fprintf (stderr, "%s:%d: assertion failed - %s\n", \
   5              __FILE__, __LINE__, #EXPRESSION); \
   6     abort (); \
   7   } \
   8 } while (0)
   9
  10 #define SIM_BITS_INLINE (INCLUDE_MODULE | INCLUDED_BY_MODULE)
  11
  12 #include "milieu.h"
  13 #include "softfloat.h"
  14 #include "systfloat.h"
  15 #include "systmodes.h"
  16
  17 /* #define SIM_FPU_INLINE (INCLUDE_MODULE | INCLUDED_BY_MODULE) */
  18
  19
  20 #include "sim-bits.h"
  21 #include "sim-fpu.h"
  22 #include "sim-fpu.c"
  23
  24
  25
  26 static int flags;
  27
  28 int8
  29 syst_float_flags_clear ()
  30 {
  31   int old_flags = 0;
  32   int i = 1;
  33   while (flags >= i)
  34     {
  35       switch ((sim_fpu_status) (flags & i))
  36         {
  37         case sim_fpu_status_denorm:
  38           break;
  39         case sim_fpu_status_invalid_snan:
  40         case sim_fpu_status_invalid_qnan:
  41         case sim_fpu_status_invalid_isi:
  42         case sim_fpu_status_invalid_idi:
  43         case sim_fpu_status_invalid_zdz:
  44         case sim_fpu_status_invalid_imz:
  45         case sim_fpu_status_invalid_cvi:
  46         case sim_fpu_status_invalid_cmp:
  47         case sim_fpu_status_invalid_sqrt:
  48           old_flags |= float_flag_invalid; /* v */
  49           break;
  50         case sim_fpu_status_inexact:
  51           old_flags |= float_flag_inexact; /* x */
  52           break;
  53         case sim_fpu_status_overflow:
  54           old_flags |= float_flag_overflow; /* o */
  55           break;
  56         case sim_fpu_status_underflow:
  57           old_flags |= float_flag_underflow; /* u */
  58           break;
  59         case sim_fpu_status_invalid_div0:
  60           old_flags |= float_flag_divbyzero; /* z */
  61           break;
  62         case sim_fpu_status_rounded:
  63           break;
  64         }
  65       i <<= 1;
  66     }
  67   flags = 0;
  68   return old_flags;
  69 }
  70
  71
  72 sim_fpu_round rounding_mode;
  73
  74 void
  75 syst_float_set_rounding_mode(int8 mode)
  76 {
  77   switch (mode)
  78     {
  79     case float_round_nearest_even:
  80       rounding_mode = sim_fpu_round_near;
  81       break;
  82     case float_round_down:
  83       rounding_mode = sim_fpu_round_down;
  84       break;
  85     case float_round_up:
  86       rounding_mode = sim_fpu_round_up;
  87       break;
  88     case float_round_to_zero:
  89       rounding_mode = sim_fpu_round_zero;
  90       break;
  91     }
  92 }
  93
  94
  95 float32
  96 syst_int32_to_float32(int32 a)
  97 {
  98   float32 z;
  99   sim_fpu s;
 100   flags |= sim_fpu_i32to (&s, a, rounding_mode);
 101   flags |= sim_fpu_round_32 (&s, rounding_mode, 0);
 102   sim_fpu_to32 (&z, &s);
 103   return z;
 104 }
 105
 106 float64
 107 syst_int32_to_float64( int32 a )
 108 {
 109   float64 z;
 110   sim_fpu s;
 111   flags |= sim_fpu_i32to (&s, a, rounding_mode);
 112   sim_fpu_to64 (&z, &s);
 113   return z;
 114 }
 115
 116 int32
 117 syst_float32_to_int32_round_to_zero( float32 a )
 118 {
 119   int32 z;
 120   sim_fpu s;
 121   sim_fpu_32to (&s, a);
 122   flags |= sim_fpu_to32i (&z, &s, sim_fpu_round_zero);
 123   return z;
 124 }
 125
 126 float64
 127 syst_float32_to_float64 (float32 a)
 128 {
 129   float64 z;
 130   sim_fpu s;
 131   sim_fpu_32to (&s, a);
 132   flags |= sim_fpu_round_64 (&s, rounding_mode, 0);
 133   sim_fpu_to64 (&z, &s);
 134   return z;
 135 }
 136
 137 float32 syst_float32_add( float32 a, float32 b )
 138 {
 139   float32 z;
 140   sim_fpu A;
 141   sim_fpu B;
 142   sim_fpu ans;
 143   sim_fpu_32to (&A, a);
 144   sim_fpu_32to (&B, b);
 145 #if 0
 146   fprintf (stdout, "\n  ");
 147   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 148   fprintf (stdout, "\n+ ");
 149   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 150   fprintf (stdout, "\n= ");
 151 #endif
 152   flags |= sim_fpu_add (&ans, &A, &B);
 153   flags |= sim_fpu_round_32 (&ans, rounding_mode, 0);
 154 #if 0
 155   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 156   fprintf (stdout, "\n");
 157 #endif
 158   sim_fpu_to32 (&z, &ans);
 159   return z;
 160 }
 161
 162 float32 syst_float32_sub( float32 a, float32 b )
 163 {
 164   float32 z;
 165   sim_fpu A;
 166   sim_fpu B;
 167   sim_fpu ans;
 168   sim_fpu_32to (&A, a);
 169   sim_fpu_32to (&B, b);
 170 #if 0
 171   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 172   fprintf (stdout, " + ");
 173   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 174   fprintf (stdout, " = ");
 175 #endif
 176   flags |= sim_fpu_sub (&ans, &A, &B);
 177   flags |= sim_fpu_round_32 (&ans, rounding_mode, 0);
 178 #if 0
 179   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 180   fprintf (stdout, "\n");
 181 #endif
 182   sim_fpu_to32 (&z, &ans);
 183   return z;
 184 }
 185
 186 float32 syst_float32_mul( float32 a, float32 b )
 187 {
 188   float32 z;
 189   sim_fpu A;
 190   sim_fpu B;
 191   sim_fpu ans;
 192   sim_fpu_32to (&A, a);
 193   sim_fpu_32to (&B, b);
 194 #if 0
 195   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 196   fprintf (stdout, " + ");
 197   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 198   fprintf (stdout, " = ");
 199 #endif
 200   flags |= sim_fpu_mul (&ans, &A, &B);
 201 #if 0
 202   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 203 #endif
 204   flags |= sim_fpu_round_32 (&ans, rounding_mode, 0);
 205 #if 0
 206   sim_fpu_print_status (flags, (sim_fpu_print_func*) fprintf, stdout);
 207   fprintf (stdout, "\n");
 208 #endif
 209   sim_fpu_to32 (&z, &ans);
 210   return z;
 211 }
 212
 213 float32 syst_float32_div( float32 a, float32 b )
 214 {
 215   float32 z;
 216   sim_fpu A;
 217   sim_fpu B;
 218   sim_fpu ans;
 219   sim_fpu_32to (&A, a);
 220   sim_fpu_32to (&B, b);
 221   flags |= sim_fpu_div (&ans, &A, &B);
 222   flags |= sim_fpu_round_32 (&ans, rounding_mode, 0);
 223   sim_fpu_to32 (&z, &ans);
 224   return z;
 225 }
 226
 227 float32 syst_float32_sqrt( float32 a )
 228 {
 229   float32 z;
 230   sim_fpu A;
 231   sim_fpu ans;
 232   sim_fpu_32to (&A, a);
 233 #if 0
 234   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 235   fprintf (stdout, " sqrt> ");
 236 #endif
 237   flags |= sim_fpu_sqrt (&ans, &A);
 238 #if 0
 239   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 240 #endif
 241   flags |= sim_fpu_round_32 (&ans, rounding_mode, 0);
 242 #if 0
 243   fprintf (stdout, " (%x)\n", flags);
 244 #endif
 245   sim_fpu_to32 (&z, &ans);
 246   return z;
 247 }
 248
 249 flag syst_float32_eq( float32 a, float32 b )
 250 {
 251   sim_fpu A;
 252   sim_fpu B;
 253   int is;
 254   sim_fpu_32to (&A, a);
 255   sim_fpu_32to (&B, b);
 256   flags |= (sim_fpu_eq (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 257   return is;
 258 }
 259
 260 flag syst_float32_eq_signaling( float32 a, float32 b )
 261 {
 262   sim_fpu A;
 263   sim_fpu B;
 264   int is;
 265   sim_fpu_32to (&A, a);
 266   sim_fpu_32to (&B, b);
 267   flags |= sim_fpu_eq (&is, &A, &B);
 268   return is;
 269 }
 270
 271 flag syst_float32_le( float32 a, float32 b )
 272 {
 273   sim_fpu A;
 274   sim_fpu B;
 275   int is;
 276   sim_fpu_32to (&A, a);
 277   sim_fpu_32to (&B, b);
 278   flags |= sim_fpu_le (&is, &A, &B);
 279   return is;
 280 }
 281
 282 flag syst_float32_le_quiet( float32 a, float32 b )
 283 {
 284   sim_fpu A;
 285   sim_fpu B;
 286   int is;
 287   sim_fpu_32to (&A, a);
 288   sim_fpu_32to (&B, b);
 289   flags |= (sim_fpu_le (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 290   return is;
 291 }
 292
 293 flag syst_float32_lt( float32 a, float32 b )
 294 {
 295   sim_fpu A;
 296   sim_fpu B;
 297   int is;
 298   sim_fpu_32to (&A, a);
 299   sim_fpu_32to (&B, b);
 300   flags |= sim_fpu_lt (&is, &A, &B);
 301   return is;
 302 }
 303
 304 flag syst_float32_lt_quiet( float32 a, float32 b )
 305 {
 306   sim_fpu A;
 307   sim_fpu B;
 308   int is;
 309   sim_fpu_32to (&A, a);
 310   sim_fpu_32to (&B, b);
 311   flags |= (sim_fpu_lt (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 312   return is;
 313 }
 314
 315 int32 syst_float64_to_int32_round_to_zero( float64 a )
 316 {
 317   int32 z;
 318   sim_fpu s;
 319   sim_fpu_64to (&s, a);
 320   flags |= sim_fpu_to32i (&z, &s, sim_fpu_round_zero);
 321   return z;
 322 }
 323
 324 float32 syst_float64_to_float32( float64 a )
 325 {
 326   float32 z;
 327   sim_fpu s;
 328   sim_fpu_64to (&s, a);
 329 #if 0
 330   sim_fpu_print_fpu (&s, (sim_fpu_print_func*) fprintf, stdout);
 331   fprintf (stdout, " -> ");
 332 #endif
 333   flags |= sim_fpu_round_32 (&s, rounding_mode, 0);
 334 #if 0
 335   sim_fpu_print_fpu (&s, (sim_fpu_print_func*) fprintf, stdout);
 336   sim_fpu_print_status (flags, (sim_fpu_print_func*) fprintf, stdout);
 337   printf ("\n");
 338 #endif
 339   sim_fpu_to32 (&z, &s);
 340   return z;
 341 }
 342
 343 float64 syst_float64_add( float64 a, float64 b )
 344 {
 345   float64 z;
 346   sim_fpu A;
 347   sim_fpu B;
 348   sim_fpu ans;
 349   sim_fpu_64to (&A, a);
 350   sim_fpu_64to (&B, b);
 351 #if 0
 352   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 353   fprintf (stdout, " + ");
 354   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 355   fprintf (stdout, " = ");
 356 #endif
 357   flags |= sim_fpu_add (&ans, &A, &B);
 358 #if 0
 359   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 360 #endif
 361   flags |= sim_fpu_round_64 (&ans, rounding_mode, 0);
 362 #if 0
 363   fprintf (stdout, " (%x)\n", flags);
 364 #endif
 365   sim_fpu_to64 (&z, &ans);
 366   return z;
 367 }
 368
 369 float64 syst_float64_sub( float64 a, float64 b )
 370 {
 371   float64 z;
 372   sim_fpu A;
 373   sim_fpu B;
 374   sim_fpu ans;
 375   sim_fpu_64to (&A, a);
 376   sim_fpu_64to (&B, b);
 377 #if 0
 378   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 379   fprintf (stdout, " + ");
 380   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 381   fprintf (stdout, " = ");
 382 #endif
 383   flags |= sim_fpu_sub (&ans, &A, &B);
 384 #if 0
 385   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 386 #endif
 387   flags |= sim_fpu_round_64 (&ans, rounding_mode, 0);
 388 #if 0
 389   fprintf (stdout, " (%x)\n", flags);
 390 #endif
 391   sim_fpu_to64 (&z, &ans);
 392   return z;
 393 }
 394
 395 float64 syst_float64_mul( float64 a, float64 b )
 396 {
 397   float64 z;
 398   sim_fpu A;
 399   sim_fpu B;
 400   sim_fpu ans;
 401   sim_fpu_64to (&A, a);
 402   sim_fpu_64to (&B, b);
 403 #if 0
 404   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 405   fprintf (stdout, " * ");
 406   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 407   fprintf (stdout, " = ");
 408 #endif
 409   flags |= sim_fpu_mul (&ans, &A, &B);
 410 #if 0
 411   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 412 #endif
 413   flags |= sim_fpu_round_64 (&ans, rounding_mode, 0);
 414 #if 0
 415   sim_fpu_print_status (flags, (sim_fpu_print_func*) fprintf, stdout);
 416   fprintf (stdout, "\n");
 417 #endif
 418   sim_fpu_to64 (&z, &ans);
 419   return z;
 420 }
 421
 422 float64 syst_float64_div( float64 a, float64 b )
 423 {
 424   float64 z;
 425   sim_fpu A;
 426   sim_fpu B;
 427   sim_fpu ans;
 428   sim_fpu_64to (&A, a);
 429   sim_fpu_64to (&B, b);
 430 #if 0
 431   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 432   fprintf (stdout, " + ");
 433   sim_fpu_print_fpu (&B, (sim_fpu_print_func*) fprintf, stdout);
 434   fprintf (stdout, " = ");
 435 #endif
 436   flags |= sim_fpu_div (&ans, &A, &B);
 437 #if 0
 438   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 439 #endif
 440   flags |= sim_fpu_round_64 (&ans, rounding_mode, 0);
 441 #if 0
 442   sim_fpu_print_status (flags, (sim_fpu_print_func*) fprintf, stdout);
 443   fprintf (stdout, "\n");
 444 #endif
 445   sim_fpu_to64 (&z, &ans);
 446   return z;
 447 }
 448
 449 float64 syst_float64_sqrt( float64 a )
 450 {
 451   float64 z;
 452   sim_fpu A;
 453   sim_fpu ans;
 454   sim_fpu_64to (&A, a);
 455 #if 0
 456   sim_fpu_print_fpu (&A, (sim_fpu_print_func*) fprintf, stdout);
 457   printf (" sqrt> ");
 458   printf ("\n");
 459 #endif
 460   flags |= sim_fpu_sqrt (&ans, &A);
 461 #if 0
 462   sim_fpu_print_fpu (&ans, (sim_fpu_print_func*) fprintf, stdout);
 463 #endif
 464   flags |= sim_fpu_round_64 (&ans, rounding_mode, 0);
 465 #if 0
 466   sim_fpu_print_status (flags, (sim_fpu_print_func*) fprintf, stdout);
 467   fprintf (stdout, "\n");
 468 #endif
 469   sim_fpu_to64 (&z, &ans);
 470   return z;
 471 }
 472
 473 flag syst_float64_eq( float64 a, float64 b )
 474 {
 475   sim_fpu A;
 476   sim_fpu B;
 477   int is;
 478   sim_fpu_64to (&A, a);
 479   sim_fpu_64to (&B, b);
 480   flags |= (sim_fpu_eq (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 481   return is;
 482 }
 483
 484 flag syst_float64_eq_signaling( float64 a, float64 b )
 485 {
 486   sim_fpu A;
 487   sim_fpu B;
 488   int is;
 489   sim_fpu_64to (&A, a);
 490   sim_fpu_64to (&B, b);
 491   flags |= sim_fpu_eq (&is, &A, &B);
 492   return is;
 493 }
 494
 495 flag syst_float64_le( float64 a, float64 b )
 496 {
 497   sim_fpu A;
 498   sim_fpu B;
 499   int is;
 500   sim_fpu_64to (&A, a);
 501   sim_fpu_64to (&B, b);
 502   flags |= sim_fpu_le (&is, &A, &B);
 503   return is;
 504 }
 505
 506 flag syst_float64_le_quiet( float64 a, float64 b )
 507 {
 508   sim_fpu A;
 509   sim_fpu B;
 510   int is;
 511   sim_fpu_64to (&A, a);
 512   sim_fpu_64to (&B, b);
 513   flags |= (sim_fpu_le (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 514   return is;
 515 }
 516
 517 flag syst_float64_lt( float64 a, float64 b )
 518 {
 519   sim_fpu A;
 520   sim_fpu B;
 521   int is;
 522   sim_fpu_64to (&A, a);
 523   sim_fpu_64to (&B, b);
 524   flags |= sim_fpu_lt (&is, &A, &B);
 525   return is;
 526 }
 527
 528 flag syst_float64_lt_quiet( float64 a, float64 b )
 529 {
 530   sim_fpu A;
 531   sim_fpu B;
 532   int is;
 533   sim_fpu_64to (&A, a);
 534   sim_fpu_64to (&B, b);
 535   flags |= (sim_fpu_lt (&is, &A, &B) & ~sim_fpu_status_invalid_qnan);
 536   return is;
 537 }
 538