src/math/ilogb.c

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