src/math/fmal.c

   1 #include <stdint.h>
   2 #include <stdio.h>
   3 #include "mtest.h"
   4
   5 static struct lll_l t[] = {
   6 #if LDBL_MANT_DIG == 53
   7 #include "sanity/fma.h"
   8 #include "special/fma.h"
   9 #elif LDBL_MANT_DIG == 64
  10 #include "sanity/fmal.h"
  11 #include "special/fmal.h"
  12 #endif
  13 };
  14
  15 int main(void)
  16 {
  17         #pragma STDC FENV_ACCESS ON
  18         long double y;
  19         float d;
  20         int e, i, err = 0;
  21         struct lll_l *p;
  22
  23         for (i = 0; i < sizeof t/sizeof *t; i++) {
  24                 p = t + i;
  25
  26                 if (p->r < 0)
  27                         continue;
  28                 fesetround(p->r);
  29                 feclearexcept(FE_ALL_EXCEPT);
  30                 y = fmal(p->x, p->x2, p->x3);
  31                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  32
  33                 /* do not check inexact by default */
  34 #if defined CHECK_INEXACT || defined CHECK_INEXACT_OMISSION
  35                 if (!checkexceptall(e, p->e, p->r)) {
  36 #else
  37                 if (!checkexceptall(e|INEXACT, p->e|INEXACT, p->r)) {
  38 #endif
  39                         printf("%s:%d: bad fp exception: %s fmal(%La,%La,%La)=%La, want %s",
  40                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->x3, p->y, estr(p->e));
  41                         printf(" got %s\n", estr(e));
  42                         err++;
  43                 }
  44                 d = ulperrl(y, p->y, p->dy);
  45                 if (!checkcr(y, p->y, p->r)) {
  46                         printf("%s:%d: %s fmal(%La,%La,%La) want %La got %La ulperr %.3f = %a + %a\n",
  47                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->x3, p->y, y, d, d-p->dy, p->dy);
  48                         err++;
  49                 }
  50         }
  51         return !!err;
  52 }