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authorUlrich Drepper <drepper@redhat.com>2000-12-03 23:38:18 +0000
committerUlrich Drepper <drepper@redhat.com>2000-12-03 23:38:18 +0000
commit0df757b10aa12644293c5c5ac5eae6a65d6dbef8 (patch)
tree1ca9492c2f17d1455f143da214f2d266a61e0814 /math/test-misc.c
parentbe2925fc8afd9170d76237ac0fcf2df5db89532b (diff)
downloadglibc-0df757b10aa12644293c5c5ac5eae6a65d6dbef8.tar.gz
Update.
* math/test-misc.c (main): More tests for frexp and some for fpclassify and isnormal.
Diffstat (limited to 'math/test-misc.c')
-rw-r--r--math/test-misc.c67
1 files changed, 60 insertions, 7 deletions
diff --git a/math/test-misc.c b/math/test-misc.c
index c0b8d0ff77..04935dc26d 100644
--- a/math/test-misc.c
+++ b/math/test-misc.c
@@ -42,8 +42,10 @@ main (void)
# if __GNUC__ >= 3 || __GNUC_MINOR__ >= 96
{
- long double x = LDBL_MAX / ldexpl (1.0L, LDBL_MANT_DIG + 1);
+ long double x;
long double m;
+ long double r;
+ int e;
int i;
# if LDBL_MANT_DIG == 64
@@ -52,12 +54,9 @@ main (void)
# error "Please adjust"
# endif
- for (i = 0; i < LDBL_MANT_DIG + 1; ++i, x *= 2.0L)
+ for (i = LDBL_MAX_EXP, x = LDBL_MAX; i >= LDBL_MIN_EXP; --i, x /= 2.0L)
{
- long double r;
- int e;
-
- printf ("2^%d: ", LDBL_MAX_EXP - (LDBL_MANT_DIG + 1) + i);
+ printf ("2^%d: ", i);
r = frexpl (x, &e);
if (r != m)
@@ -66,7 +65,7 @@ main (void)
result = 1;
continue;
}
- if (e != LDBL_MAX_EXP - (LDBL_MANT_DIG + 1) + i)
+ if (e != i)
{
printf ("exponent wrong %d (%.20Lg)\n", e, x);
result = 1;
@@ -91,5 +90,59 @@ main (void)
}
}
+ if (fpclassify (FLT_MIN) != FP_NORMAL)
+ {
+ printf ("fpclassify (FLT_MIN) failed: %d\n", fpclassify (FLT_MIN));
+ result = 1;
+ }
+ if (fpclassify (nextafterf (FLT_MIN, FLT_MIN / 2.0f)) != FP_SUBNORMAL)
+ {
+ printf ("fpclassify (FLT_MIN-epsilon) failed: %d\n",
+ fpclassify (nextafterf (FLT_MIN, FLT_MIN / 2.0f)));
+ result = 1;
+ }
+ if (fpclassify (DBL_MIN) != FP_NORMAL)
+ {
+ printf ("fpclassify (DBL_MIN) failed: %d\n", fpclassify (DBL_MIN));
+ result = 1;
+ }
+ if (fpclassify (nextafter (DBL_MIN, DBL_MIN / 2.0)) != FP_SUBNORMAL)
+ {
+ printf ("fpclassify (DBL_MIN-epsilon) failed: %d\n",
+ fpclassify (nextafter (DBL_MIN, DBL_MIN / 2.0)));
+ result = 1;
+ }
+#ifndef NO_LONG_DOUBLE
+ if (fpclassify (LDBL_MIN) != FP_NORMAL)
+ {
+ printf ("fpclassify (LDBL_MIN) failed: %d\n", fpclassify (LDBL_MIN));
+ result = 1;
+ }
+ if (fpclassify (nextafterl (LDBL_MIN, LDBL_MIN / 2.0)) != FP_SUBNORMAL)
+ {
+ printf ("fpclassify (LDBL_MIN-epsilon) failed: %d\n",
+ fpclassify (nextafterl (LDBL_MIN, LDBL_MIN / 2.0)));
+ result = 1;
+ }
+#endif
+
+ if (! isnormal (FLT_MIN))
+ {
+ puts ("isnormal (FLT_MIN) failed");
+ result = 1;
+ }
+ if (! isnormal (DBL_MIN))
+ {
+ puts ("isnormal (DBL_MIN) failed");
+ result = 1;
+ }
+#ifndef NO_LONG_DOUBLE
+ if (! isnormal (LDBL_MIN))
+ {
+ puts ("isnormal (LDBL_MIN) failed");
+ result = 1;
+ }
+#endif
+
return result;
}