skip known math failures

[libc-test] / src / math / pow.c

diff --git a/src/math/pow.c b/src/math/pow.c
index a3bf732..756b63b 100644 (file)
--- a/src/math/pow.c
+++ b/src/math/pow.c
@@ -1,16 +1,18 @@
 #include <stdint.h>
 #include <stdio.h>
-#include "util.h"
+#include "mtest.h"
 
 static struct dd_d t[] = {
 #include "crlibm/pow.h"
 #include "ucb/pow.h"
 #include "sanity/pow.h"
+#include "special/pow.h"
 
 };
 
 int main(void)
 {
+       #pragma STDC FENV_ACCESS ON
        double y;
        float d;
        int e, i, err = 0;
@@ -18,18 +20,27 @@ int main(void)
 
        for (i = 0; i < sizeof t/sizeof *t; i++) {
                p = t + i;
-               setupfenv(p->r);
+
+               if (p->r < 0)
+                       continue;
+               fesetround(p->r);
+               feclearexcept(FE_ALL_EXCEPT);
                y = pow(p->x, p->x2);
-               e = getexcept();
+               e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
+
                if (!checkexcept(e, p->e, p->r)) {
-                       printf("%s pow(%a,%a)==%a except: want %s", rstr(p->r), p->x, p->x2, p->y, estr(p->e));
+                       if (fabs(y) < 0x1p-1022 && (e|INEXACT) == (INEXACT|UNDERFLOW))
+                               printf("X ");
+                       else
+                               err++;
+                       printf("%s:%d: bad fp exception: %s pow(%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 (!checkulp(d, p->r)) {
-                       printf("%s pow(%a,%a) want %a got %a ulperr %.3f = %a + %a\n",
-                               rstr(p->r), p->x, p->x2, p->y, y, d, d-p->dy, p->dy);
+                       printf("%s:%d: %s pow(%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++;
                }
        }