src/math/lgamma_r.c

   1 #define _DEFAULT_SOURCE 1
   2 #define _BSD_SOURCE 1
   3 #define _GNU_SOURCE 1
   4 #include <stdint.h>
   5 #include <stdio.h>
   6 #include "mtest.h"
   7
   8 static struct d_di t[] = {
   9 #include "sanity/lgamma_r.h"
  10 #include "special/lgamma_r.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 d_di *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 = lgamma_r(p->x, &yi);
  31                 e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
  32
  33                 if (!checkexcept(e, p->e, p->r)) {
  34                         printf("%s:%d: bad fp exception: %s lgamma_r(%a)=%a,%lld, want %s",
  35                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, estr(p->e));
  36                         printf(" got %s\n", estr(e));
  37                         err++;
  38                 }
  39                 d = ulperr(y, p->y, p->dy);
  40                 if (!checkulp(d, p->r) || (!isnan(p->x) && p->x!=-inf && !(p->e&DIVBYZERO) && yi != p->i)) {
  41                         printf("%s:%d: %s lgamma_r(%a) want %a,%lld got %a,%d ulperr %.3f = %a + %a\n",
  42                                 p->file, p->line, rstr(p->r), p->x, p->y, p->i, y, yi, d, d-p->dy, p->dy);
  43                         err++;
  44                 }
  45         }
  46         return !!err;
  47 }