1 #define _GNU_SOURCE 1
2 #include <stdint.h>
3 #include <stdio.h>
4 #include "mtest.h"
5
6 static struct l_li t[] = {
7 #if LDBL_MANT_DIG == 53
8 #include "sanity/lgamma_r.h"
9 #include "special/lgamma_r.h"
10
11 #elif LDBL_MANT_DIG == 64
12 #include "sanity/lgammal_r.h"
13 #include "special/lgammal_r.h"
14
15 #endif
16 };
17
main(void)18 int main(void)
19 {
20 #pragma STDC FENV_ACCESS ON
21 int yi;
22 long double y;
23 float d;
24 int e, i, err = 0;
25 struct l_li *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 = lgammal_r(p->x, &yi);
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 lgammal_r(%La)=%La,%lld, want %s",
39 p->file, p->line, rstr(p->r), p->x, p->y, p->i, estr(p->e));
40 printf(" got %s\n", estr(e));
41 err++;
42 }
43 d = ulperrl(y, p->y, p->dy);
44 // TODO: 2 ulp errors allowed
45 if ((p->r==RN && fabs(d)>2) || (!isnan(p->x) && p->x!=-inf && !(p->e&DIVBYZERO) && yi != p->i)) {
46 printf("%s:%d: %s lgammal_r(%La) want %La,%lld got %La,%d ulperr %.3f = %a + %a\n",
47 p->file, p->line, rstr(p->r), p->x, p->y, p->i, y, yi, d, d-p->dy, p->dy);
48 err++;
49 }
50 }
51 return !!err;
52 }
53