src/math/lgammaf.c

   1 #define _DEFAULT_SOURCE 1
   2 #define _BSD_SOURCE 1
   3 #define _XOPEN_SOURCE 700
   4 #include <stdint.h>
   5 #include <stdio.h>
   6 #include "mtest.h"
   7
   8 static struct f_fi t[] = {
   9 #include "sanity/lgammaf.h"
  10 #include "special/lgammaf.h"
  11
  12 };
  13
  14 int main(void)
  15 {
  16         #pragma STDC FENV_ACCESS ON
  17         int yi;
  18         double y;
  19         float d;
  20         int e, i, err = 0;
  21         struct f_fi *p;
  22
  23         for (i = 0; i < sizeof t/sizeof *t; i++) {
  24                 p = t + i;
  25
  26                 if (p->r < 0)
  27                         continue;
  28                 fesetround(p->r);
  29                 feclearexcept(FE_ALL_EXCEPT);
  30                 y = lgammaf(p->x);
  31                 yi = signgam;
  32                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  33
  34                 if (!checkexcept(e, p->e, p->r)) {
  35                         printf("%s:%d: bad fp exception: %s lgammaf(%a)=%a,%lld, want %s",
  36                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, estr(p->e));
  37                         printf(" got %s\n", estr(e));
  38                         err++;
  39                 }
  40                 d = ulperrf(y, p->y, p->dy);
  41                 if (!checkulp(d, p->r) || (!isnan(p->x) && p->x!=-inf && !(p->e&DIVBYZERO) && yi != p->i)) {
  42                         printf("%s:%d: %s lgammaf(%a) want %a,%lld got %a,%d ulperr %.3f = %a + %a\n",
  43                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, y, yi, d, d-p->dy, p->dy);
  44                         err++;
  45                 }
  46         }
  47         return !!err;
  48 }