src/math/powl.c

   1 #include <stdint.h>
   2 #include <stdio.h>
   3 #include "mtest.h"
   4
   5 static struct ll_l t[] = {
   6 #if LDBL_MANT_DIG == 53
   7 #include "crlibm/pow.h"
   8 #include "ucb/pow.h"
   9 #include "sanity/pow.h"
  10 #include "special/pow.h"
  11
  12 #elif LDBL_MANT_DIG == 64
  13 #include "sanity/powl.h"
  14 #include "special/powl.h"
  15
  16 #endif
  17 };
  18
  19 int main(void)
  20 {
  21         #pragma STDC FENV_ACCESS ON
  22         long double y;
  23         float d;
  24         int e, i, err = 0;
  25         struct ll_l *p;
  26
  27         for (i = 0; i < sizeof t/sizeof *t; i++) {
  28                 p = t + i;
  29
  30                 if (p->r < 0)
  31                         continue;
  32                 fesetround(p->r);
  33                 feclearexcept(FE_ALL_EXCEPT);
  34                 y = powl(p->x, p->x2);
  35                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  36
  37                 if (!checkexcept(e, p->e, p->r)) {
  38                         printf("%s:%d: bad fp exception: %s powl(%La,%La)=%La, want %s",
  39                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->y, estr(p->e));
  40                         printf(" got %s\n", estr(e));
  41                         err++;
  42                 }
  43                 d = ulperrl(y, p->y, p->dy);
  44                 if (!checkulp(d, p->r)) {
  45                         printf("%s:%d: %s powl(%La,%La) want %La got %La ulperr %.3f = %a + %a\n",
  46                                 p->file, p->line, rstr(p->r), p->x, p->x2, p->y, y, d, d-p->dy, p->dy);
  47                         err++;
  48                 }
  49         }
  50         return !!err;
  51 }