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authorJakub Jelinek <jakub@redhat.com>2007-05-03 12:15:04 +0000
committerJakub Jelinek <jakub@redhat.com>2007-05-03 12:15:04 +0000
commit002f0b0b5df92cc1c1302c6b95c0c97fd986ed94 (patch)
tree908b1cf953bdc17ad9a01eed2e7fa7d8aafa1bde /math
parent57433edee3c08b16967487664a28e0ecc99d7f8c (diff)
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* math/test-misc.c (main): Add tests for rounding long double
values close to smallest double denormalized value to double. * soft-fp/op-common.h (FP_TRUNC): Correct off-by-one error in condition for truncating to 0. Set sticky bit for such truncation. 2007-05-03 Jakub Jelinek <jakub@redhat.com> * math/test-misc.c (main): Add tests for rounding long double values close to smallest double denormalized value to double. 2007-04-30 Joseph Myers <joseph@codesourcery.com> * soft-fp/op-common.h (FP_TRUNC): Correct off-by-one error in condition for truncating to 0. Set sticky bit for such truncation.
Diffstat (limited to 'math')
-rw-r--r--math/test-misc.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/math/test-misc.c b/math/test-misc.c
index 862e11f..1dc4d90 100644
--- a/math/test-misc.c
+++ b/math/test-misc.c
@@ -1235,5 +1235,22 @@ main (void)
}
#endif
+#if !defined NO_LONG_DOUBLE && LDBL_MANT_DIG >= DBL_MANT_DIG + 4
+ volatile long double ld5 = nextafter (0.0, 1.0) / 16.0L;
+ volatile double d5;
+ (void) &ld5;
+ int i;
+ for (i = 0; i <= 32; i++)
+ {
+ d5 = ld5 * i;
+ (void) &d5;
+ if (d5 != (i <= 8 ? 0 : i < 24 ? 1 : 2) * nextafter (0.0, 1.0))
+ {
+ printf ("%La incorrectly rounded to %a\n", ld5 * i, d5);
+ result = 1;
+ }
+ }
+#endif
+
return result;
}