src/math/frexpl.c

   1 #include <stdint.h>
   2 #include <stdio.h>
   3 #include "mtest.h"
   4
   5 static struct l_li t[] = {
   6 #if LDBL_MANT_DIG == 53
   7 #include "sanity/frexp.h"
   8 #include "special/frexp.h"
   9
  10 #elif LDBL_MANT_DIG == 64
  11 #include "sanity/frexpl.h"
  12 #include "special/frexpl.h"
  13
  14 #endif
  15 };
  16
  17 int main(void)
  18 {
  19         #pragma STDC FENV_ACCESS ON
  20         int yi;
  21         long double y;
  22         float d;
  23         int e, i, err = 0;
  24         struct l_li *p;
  25
  26         for (i = 0; i < sizeof t/sizeof *t; i++) {
  27                 p = t + i;
  28
  29                 if (p->r < 0)
  30                         continue;
  31                 fesetround(p->r);
  32                 feclearexcept(FE_ALL_EXCEPT);
  33                 y = frexpl(p->x, &yi);
  34                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  35
  36                 if (!checkexceptall(e, p->e, p->r)) {
  37                         printf("%s:%d: bad fp exception: %s frexpl(%La)=%La,%lld, want %s",
  38                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, estr(p->e));
  39                         printf(" got %s\n", estr(e));
  40                         err++;
  41                 }
  42                 d = ulperrl(y, p->y, p->dy);
  43                 if (!checkcr(y, p->y, p->r) || (isfinite(p->x) && yi != p->i)) {
  44                         printf("%s:%d: %s frexpl(%La) want %La,%lld got %La,%d ulperr %.3f = %a + %a\n",
  45                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, y, yi, d, d-p->dy, p->dy);
  46                         err++;
  47                 }
  48         }
  49         return !!err;
  50 }