src/math/sincos.c

   1 #define _GNU_SOURCE 1
   2 #include <stdint.h>
   3 #include <stdio.h>
   4 #include "mtest.h"
   5
   6 static struct d_dd t[] = {
   7 #include "sanity/sincos.h"
   8 #include "special/sincos.h"
   9 };
  10
  11 int main(void)
  12 {
  13         #pragma STDC FENV_ACCESS ON
  14         double ysin, ycos;
  15         float dsin, dcos;
  16         int e, i, err = 0;
  17         struct d_dd *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                 sincos(p->x, &ysin, &ycos);
  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 sincos(%a)=%a,%a, want %s",
  31                                 p->file, p->line, rstr(p->r), p->x, p->y, p->y2, estr(p->e));
  32                         printf(" got %s\n", estr(e));
  33                         err++;
  34                 }
  35                 dsin = ulperr(ysin, p->y, p->dy);
  36                 dcos = ulperr(ycos, p->y2, p->dy2);
  37                 if (!checkulp(dsin, p->r) || !checkulp(dcos, p->r)) {
  38                         printf("%s:%d: %s sincos(%a) want %a,%a got %a,%a, ulperr %.3f = %a + %a, %.3f = %a + %a\n",
  39                                 p->file, p->line, rstr(p->r), p->x, p->y, p->y2, ysin, ycos,
  40                                 dsin, dsin-p->dy, p->dy, dcos, dcos-p->dy2, p->dy2);
  41                         err++;
  42                 }
  43         }
  44         return !!err;
  45 }