diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | math/libm-test.inc | 23 |
2 files changed, 24 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog index c61158200b..91942faaab 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2006-04-14 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #2549] + * math/libm-test.inc (check_float_internal): Support + denormalized return. + 2007-10-23 Andreas Jaeger <aj@suse.de> [BZ #5208] diff --git a/math/libm-test.inc b/math/libm-test.inc index da68d40bb4..e698923f4e 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 |