compiler-rt/test/builtins/Unit/mulxc3_test.c

   1 // RUN: %clang_builtins %s %librt -lm -o %t && %run %t
   2 // REQUIRES: librt_has_mulxc3
   3 // UNSUPPORTED: powerpc64
   4 // REQUIRES: x86-target-arch
   5 //===-- mulxc3_test.c - Test __mulxc3 -------------------------------------===//
   6 //
   7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   8 // See https://llvm.org/LICENSE.txt for license information.
   9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  10 //
  11 //===----------------------------------------------------------------------===//
  12 //
  13 // This file tests __mulxc3 for the compiler_rt library.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #if !_ARCH_PPC
  18
  19 #include "int_lib.h"
  20 #include <math.h>
  21 #include <complex.h>
  22 #include <stdio.h>
  23
  24 // UNSUPPORTED: mips
  25 // REQUIRES: c99-complex
  26
  27 // Returns: the product of a + ib and c + id
  28
  29 COMPILER_RT_ABI long double _Complex
  30 __mulxc3(long double __a, long double __b, long double __c, long double __d);
  31
  32 enum {zero, non_zero, inf, NaN, non_zero_nan};
  33
  34 int
  35 classify(long double _Complex x)
  36 {
  37     if (x == 0)
  38         return zero;
  39     if (isinf(creall(x)) || isinf(cimagl(x)))
  40         return inf;
  41     if (isnan(creall(x)) && isnan(cimagl(x)))
  42         return NaN;
  43     if (isnan(creall(x)))
  44     {
  45         if (cimagl(x) == 0)
  46             return NaN;
  47         return non_zero_nan;
  48     }
  49     if (isnan(cimagl(x)))
  50     {
  51         if (creall(x) == 0)
  52             return NaN;
  53         return non_zero_nan;
  54     }
  55     return non_zero;
  56 }
  57
  58 int test__mulxc3(long double a, long double b, long double c, long double d)
  59 {
  60     long double _Complex r = __mulxc3(a, b, c, d);
  61 //     printf("test__mulxc3(%Lf, %Lf, %Lf, %Lf) = %Lf + I%Lf\n",
  62 //             a, b, c, d, creall(r), cimagl(r));
  63         long double _Complex dividend;
  64         long double _Complex divisor;
  65
  66         __real__ dividend = a;
  67         __imag__ dividend = b;
  68         __real__ divisor = c;
  69         __imag__ divisor = d;
  70
  71     switch (classify(dividend))
  72     {
  73     case zero:
  74         switch (classify(divisor))
  75         {
  76         case zero:
  77             if (classify(r) != zero)
  78                 return 1;
  79             break;
  80         case non_zero:
  81             if (classify(r) != zero)
  82                 return 1;
  83             break;
  84         case inf:
  85             if (classify(r) != NaN)
  86                 return 1;
  87             break;
  88         case NaN:
  89             if (classify(r) != NaN)
  90                 return 1;
  91             break;
  92         case non_zero_nan:
  93             if (classify(r) != NaN)
  94                 return 1;
  95             break;
  96         }
  97         break;
  98     case non_zero:
  99         switch (classify(divisor))
 100         {
 101         case zero:
 102             if (classify(r) != zero)
 103                 return 1;
 104             break;
 105         case non_zero:
 106             if (classify(r) != non_zero)
 107                 return 1;
 108             if (r != a * c - b * d + _Complex_I*(a * d + b * c))
 109                 return 1;
 110             break;
 111         case inf:
 112             if (classify(r) != inf)
 113                 return 1;
 114             break;
 115         case NaN:
 116             if (classify(r) != NaN)
 117                 return 1;
 118             break;
 119         case non_zero_nan:
 120             if (classify(r) != NaN)
 121                 return 1;
 122             break;
 123         }
 124         break;
 125     case inf:
 126         switch (classify(divisor))
 127         {
 128         case zero:
 129             if (classify(r) != NaN)
 130                 return 1;
 131             break;
 132         case non_zero:
 133             if (classify(r) != inf)
 134                 return 1;
 135             break;
 136         case inf:
 137             if (classify(r) != inf)
 138                 return 1;
 139             break;
 140         case NaN:
 141             if (classify(r) != NaN)
 142                 return 1;
 143             break;
 144         case non_zero_nan:
 145             if (classify(r) != inf)
 146                 return 1;
 147             break;
 148         }
 149         break;
 150     case NaN:
 151         switch (classify(divisor))
 152         {
 153         case zero:
 154             if (classify(r) != NaN)
 155                 return 1;
 156             break;
 157         case non_zero:
 158             if (classify(r) != NaN)
 159                 return 1;
 160             break;
 161         case inf:
 162             if (classify(r) != NaN)
 163                 return 1;
 164             break;
 165         case NaN:
 166             if (classify(r) != NaN)
 167                 return 1;
 168             break;
 169         case non_zero_nan:
 170             if (classify(r) != NaN)
 171                 return 1;
 172             break;
 173         }
 174         break;
 175     case non_zero_nan:
 176         switch (classify(divisor))
 177         {
 178         case zero:
 179             if (classify(r) != NaN)
 180                 return 1;
 181             break;
 182         case non_zero:
 183             if (classify(r) != NaN)
 184                 return 1;
 185             break;
 186         case inf:
 187             if (classify(r) != inf)
 188                 return 1;
 189             break;
 190         case NaN:
 191             if (classify(r) != NaN)
 192                 return 1;
 193             break;
 194         case non_zero_nan:
 195             if (classify(r) != NaN)
 196                 return 1;
 197             break;
 198         }
 199         break;
 200     }
 201
 202     return 0;
 203 }
 204
 205 long double x[][2] =
 206 {
 207     { 1.e-6,  1.e-6},
 208     {-1.e-6,  1.e-6},
 209     {-1.e-6, -1.e-6},
 210     { 1.e-6, -1.e-6},
 211
 212     { 1.e+6,  1.e-6},
 213     {-1.e+6,  1.e-6},
 214     {-1.e+6, -1.e-6},
 215     { 1.e+6, -1.e-6},
 216
 217     { 1.e-6,  1.e+6},
 218     {-1.e-6,  1.e+6},
 219     {-1.e-6, -1.e+6},
 220     { 1.e-6, -1.e+6},
 221
 222     { 1.e+6,  1.e+6},
 223     {-1.e+6,  1.e+6},
 224     {-1.e+6, -1.e+6},
 225     { 1.e+6, -1.e+6},
 226
 227     {NAN, NAN},
 228     {-INFINITY, NAN},
 229     {-2, NAN},
 230     {-1, NAN},
 231     {-0.5, NAN},
 232     {-0., NAN},
 233     {+0., NAN},
 234     {0.5, NAN},
 235     {1, NAN},
 236     {2, NAN},
 237     {INFINITY, NAN},
 238
 239     {NAN, -INFINITY},
 240     {-INFINITY, -INFINITY},
 241     {-2, -INFINITY},
 242     {-1, -INFINITY},
 243     {-0.5, -INFINITY},
 244     {-0., -INFINITY},
 245     {+0., -INFINITY},
 246     {0.5, -INFINITY},
 247     {1, -INFINITY},
 248     {2, -INFINITY},
 249     {INFINITY, -INFINITY},
 250
 251     {NAN, -2},
 252     {-INFINITY, -2},
 253     {-2, -2},
 254     {-1, -2},
 255     {-0.5, -2},
 256     {-0., -2},
 257     {+0., -2},
 258     {0.5, -2},
 259     {1, -2},
 260     {2, -2},
 261     {INFINITY, -2},
 262
 263     {NAN, -1},
 264     {-INFINITY, -1},
 265     {-2, -1},
 266     {-1, -1},
 267     {-0.5, -1},
 268     {-0., -1},
 269     {+0., -1},
 270     {0.5, -1},
 271     {1, -1},
 272     {2, -1},
 273     {INFINITY, -1},
 274
 275     {NAN, -0.5},
 276     {-INFINITY, -0.5},
 277     {-2, -0.5},
 278     {-1, -0.5},
 279     {-0.5, -0.5},
 280     {-0., -0.5},
 281     {+0., -0.5},
 282     {0.5, -0.5},
 283     {1, -0.5},
 284     {2, -0.5},
 285     {INFINITY, -0.5},
 286
 287     {NAN, -0.},
 288     {-INFINITY, -0.},
 289     {-2, -0.},
 290     {-1, -0.},
 291     {-0.5, -0.},
 292     {-0., -0.},
 293     {+0., -0.},
 294     {0.5, -0.},
 295     {1, -0.},
 296     {2, -0.},
 297     {INFINITY, -0.},
 298
 299     {NAN, 0.},
 300     {-INFINITY, 0.},
 301     {-2, 0.},
 302     {-1, 0.},
 303     {-0.5, 0.},
 304     {-0., 0.},
 305     {+0., 0.},
 306     {0.5, 0.},
 307     {1, 0.},
 308     {2, 0.},
 309     {INFINITY, 0.},
 310
 311     {NAN, 0.5},
 312     {-INFINITY, 0.5},
 313     {-2, 0.5},
 314     {-1, 0.5},
 315     {-0.5, 0.5},
 316     {-0., 0.5},
 317     {+0., 0.5},
 318     {0.5, 0.5},
 319     {1, 0.5},
 320     {2, 0.5},
 321     {INFINITY, 0.5},
 322
 323     {NAN, 1},
 324     {-INFINITY, 1},
 325     {-2, 1},
 326     {-1, 1},
 327     {-0.5, 1},
 328     {-0., 1},
 329     {+0., 1},
 330     {0.5, 1},
 331     {1, 1},
 332     {2, 1},
 333     {INFINITY, 1},
 334
 335     {NAN, 2},
 336     {-INFINITY, 2},
 337     {-2, 2},
 338     {-1, 2},
 339     {-0.5, 2},
 340     {-0., 2},
 341     {+0., 2},
 342     {0.5, 2},
 343     {1, 2},
 344     {2, 2},
 345     {INFINITY, 2},
 346
 347     {NAN, INFINITY},
 348     {-INFINITY, INFINITY},
 349     {-2, INFINITY},
 350     {-1, INFINITY},
 351     {-0.5, INFINITY},
 352     {-0., INFINITY},
 353     {+0., INFINITY},
 354     {0.5, INFINITY},
 355     {1, INFINITY},
 356     {2, INFINITY},
 357     {INFINITY, INFINITY}
 358
 359 };
 360
 361 #endif
 362
 363 int main()
 364 {
 365 #if !_ARCH_PPC
 366     const unsigned N = sizeof(x) / sizeof(x[0]);
 367     unsigned i, j;
 368     for (i = 0; i < N; ++i)
 369     {
 370         for (j = 0; j < N; ++j)
 371         {
 372             if (test__mulxc3(x[i][0], x[i][1], x[j][0], x[j][1]))
 373                 return 1;
 374         }
 375     }
 376
 377 #else
 378     printf("skipped\n");
 379 #endif
 380     return 0;
 381 }