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authorUlrich Drepper <drepper@redhat.com>2007-10-28 01:14:40 +0000
committerUlrich Drepper <drepper@redhat.com>2007-10-28 01:14:40 +0000
commite6b29af8a314d3a6a538222a98383c215d410ddf (patch)
treee34c007df61a87e144b4d34b92e0bfdb14ae5d76 /math
parentad3371fbac6896adc4820434676f35bd44a24cf8 (diff)
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[BZ #2549]
2006-04-14 H.J. Lu <hongjiu.lu@intel.com> [BZ #2549] * math/libm-test.inc (check_float_internal): Support denormalized return.
Diffstat (limited to 'math')
-rw-r--r--math/libm-test.inc23
1 files changed, 18 insertions, 5 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc
index da68d40..e698923 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -487,11 +487,24 @@ check_float_internal (const char *test_name, FLOAT computed, FLOAT expected,
else
{
diff = FUNC(fabs) (computed - expected);
- /* ilogb (0) isn't allowed. */
- if (expected == 0.0)
- ulp = diff / FUNC(ldexp) (1.0, - MANT_DIG);
- else
- ulp = diff / FUNC(ldexp) (1.0, FUNC(ilogb) (expected) - MANT_DIG);
+ switch (fpclassify (expected))
+ {
+ case FP_ZERO:
+ /* ilogb (0) isn't allowed. */
+ ulp = diff / FUNC(ldexp) (1.0, - MANT_DIG);
+ break;
+ case FP_NORMAL:
+ ulp = diff / FUNC(ldexp) (1.0, FUNC(ilogb) (expected) - MANT_DIG);
+ break;
+ case FP_SUBNORMAL:
+ ulp = (FUNC(ldexp) (diff, MANT_DIG)
+ / FUNC(ldexp) (1.0, FUNC(ilogb) (expected)));
+ break;
+ default:
+ /* It should never happen. */
+ abort ();
+ break;
+ }
set_max_error (ulp, curr_max_error);
print_diff = 1;
if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0