sys/external/bsd/compiler_rt/dist/test/Unit/mulxc3_test.c

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