-#include <math.h>
#include <stdint.h>
-#include <fenv.h>
#include <stdio.h>
-#include <float.h>
-#include <stdlib.h>
-#include "fenvutil.h"
-#include "test.h"
+#include "mtest.h"
+
+static struct dd_d t[] = {
+#include "sanity/nextafter.h"
+#include "special/nextafter.h"
-static struct {
- double x;
- double y;
- double z;
- int except;
-} t[] = {
- 0, 0, 0, 0,
- 0, -0.0, -0.0, 0,
- -0.0, 0, 0, 0,
- 0, 1, 0x1p-1074, FE_INEXACT|FE_UNDERFLOW,
- 0, -1, -0x1p-1074, FE_INEXACT|FE_UNDERFLOW,
- -0.0, 1, 0x1p-1074, FE_INEXACT|FE_UNDERFLOW,
- -0.0, -1, -0x1p-1074, FE_INEXACT|FE_UNDERFLOW,
- 0x1p-1074, INFINITY, 0x1p-1073, FE_INEXACT|FE_UNDERFLOW,
- 0x1p-1074, -INFINITY, 0, FE_INEXACT|FE_UNDERFLOW,
--0x1p-1074, INFINITY, -0.0, FE_INEXACT|FE_UNDERFLOW,
--0x1p-1074, -INFINITY, -0x1p-1073, FE_INEXACT|FE_UNDERFLOW,
- DBL_MIN, 0, 0x0.fffffffffffffp-1022, FE_INEXACT|FE_UNDERFLOW,
- -DBL_MIN, 0, -0x0.fffffffffffffp-1022, FE_INEXACT|FE_UNDERFLOW,
- 1, 2, 0x1.0000000000001p+0, 0,
- 1, -2, 0x1.fffffffffffffp-1, 0,
- 1, 0.5, 0x1.fffffffffffffp-1, 0,
- 0x1p1023, 0x1p1000, 0x1.fffffffffffffp+1022, 0,
- 0x1p1023, INFINITY, 0x1.0000000000001p+1023, 0,
- -1.5, -2.5, -0x1.8000000000001p+0, 0,
- -1.5, 2.5, -0x1.7ffffffffffffp+0, 0,
- 1.5, -2.5, 0x1.7ffffffffffffp+0, 0,
- DBL_MAX, INFINITY, INFINITY, FE_INEXACT|FE_OVERFLOW,
- INFINITY, INFINITY, INFINITY, 0,
- -DBL_MAX, -INFINITY, -INFINITY, FE_INEXACT|FE_OVERFLOW,
- -INFINITY, -INFINITY, -INFINITY, 0,
- NAN, 1, NAN, 0,
- 1, NAN, NAN, 0,
};
-void test_nextafter()
+int main(void)
{
- int f, i;
- double z;
+ #pragma STDC FENV_ACCESS ON
+ double y;
+ float d;
+ int e, i, err = 0;
+ struct dd_d *p;
for (i = 0; i < sizeof t/sizeof *t; i++) {
- feclearexcept(FE_ALL_EXCEPT);
- z = nextafter(t[i].x, t[i].y);
- f = fetestexcept(FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT);
+ p = t + i;
- if (z != t[i].z && !(isnan(z) && isnan(t[i].z)))
- error("nextafter(%a, %a) want %a got %a\n", t[i].x, t[i].y, t[i].z, z);
- if (f != t[i].except)
- error("nextafter(%a, %a)==%a want except=%s got except=%s\n",
- t[i].x, t[i].y, t[i].z, strdup(strexcept(t[i].except)), strdup(strexcept(f)));
- }
-}
-
-void bench_nextafter_normal(int N)
-{
- int i;
- volatile double z;
-
- for (i = 0; i < N; i++) {
- z = nextafter(1.25, 4);
- }
-}
-
-void bench_nextafter_subnormal(int N)
-{
- int i;
- volatile double z;
-
- for (i = 0; i < N; i++) {
- z = nextafter(0x1p-1070, -0x1p-1071);
+ if (p->r < 0)
+ continue;
+ fesetround(p->r);
+ feclearexcept(FE_ALL_EXCEPT);
+ y = nextafter(p->x, p->x2);
+ e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
+
+ if (!checkexceptall(e, p->e, p->r)) {
+ printf("%s:%d: bad fp exception: %s nextafter(%a,%a)=%a, want %s",
+ p->file, p->line, rstr(p->r), p->x, p->x2, p->y, estr(p->e));
+ printf(" got %s\n", estr(e));
+ err++;
+ }
+ d = ulperr(y, p->y, p->dy);
+ if (!checkcr(y, p->y, p->r)) {
+ printf("%s:%d: %s nextafter(%a,%a) want %a got %a ulperr %.3f = %a + %a\n",
+ p->file, p->line, rstr(p->r), p->x, p->x2, p->y, y, d, d-p->dy, p->dy);
+ err++;
+ }
}
+ return !!err;
}