src/math/remquo.c

   1 #include <stdint.h>
   2 #include <stdio.h>
   3 #include "mtest.h"
   4
   5 static struct dd_di t[] = {
   6 #include "sanity/remquo.h"
   7 #include "special/remquo.h"
   8 };
   9
  10 int main(void)
  11 {
  12         #pragma STDC FENV_ACCESS ON
  13         int yi;
  14         double y;
  15         float d;
  16         int e, i, err = 0;
  17         struct dd_di *p;
  18
  19         for (i = 0; i < sizeof t/sizeof *t; i++) {
  20                 p = t + i;
  21
  22                 if (p->r < 0)
  23                         continue;
  24                 fesetround(p->r);
  25                 feclearexcept(FE_ALL_EXCEPT);
  26                 y = remquo(p->x, p->x2, &yi);
  27                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  28
  29                 if (!checkexcept(e, p->e, p->r)) {
  30                         printf("%s:%d: bad fp exception: %s remquo(%a,%a)=%a,%lld, want %s",
  31                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->y, p->i, estr(p->e));
  32                         printf(" got %s\n", estr(e));
  33                         err++;
  34                 }
  35                 d = ulperr(y, p->y, p->dy);
  36                 if (!checkcr(y, p->y, p->r) ||
  37                 (!isnan(p->y) && (yi & 7) != (p->i & 7)) ||
  38                 (!isnan(p->y) && (yi < 0) != (p->i < 0))) {
  39                         printf("%s:%d: %s remquo(%a,%a) want %a,%lld got %a,%d ulperr %.3f = %a + %a\n",
  40                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->y, p->i, y, yi, d, d-p->dy, p->dy);
  41                         err++;
  42                 }
  43         }
  44         return !!err;
  45 }