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| author | Joseph Myers <joseph@codesourcery.com> | 2012-10-01 08:30:06 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2012-10-01 08:30:06 +0000 |
| commit | bec749fda1cbc1934f7e58dd2763603f4f207f26 (patch) | |
| tree | 680a53e980c97e223c0e10353d83a41a5b43fdd0 /math | |
| parent | 8ec5b01346114da38e806ca1867da688d3a360e2 (diff) | |
| download | glibc-bec749fda1cbc1934f7e58dd2763603f4f207f26.zip glibc-bec749fda1cbc1934f7e58dd2763603f4f207f26.tar.gz glibc-bec749fda1cbc1934f7e58dd2763603f4f207f26.tar.bz2 | |
Fix sign of inexact zero return from fma (bug 14645).
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 007eea1..bed8fc6 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -214,6 +214,7 @@ static int ignore_max_ulp; /* Should we ignore max_ulp? */ static FLOAT minus_zero, plus_zero; static FLOAT plus_infty, minus_infty, nan_value, max_value, min_value; +static FLOAT min_subnorm_value; static FLOAT max_error, real_max_error, imag_max_error; @@ -4576,6 +4577,15 @@ fma_test (void) TEST_fff_f (fma, -1.0, 1.0, 1.0, plus_zero); TEST_fff_f (fma, -1.0, -1.0, -1.0, plus_zero); + TEST_fff_f (fma, min_value, min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); + #if defined (TEST_FLOAT) && FLT_MANT_DIG == 24 TEST_fff_f (fma, 0x1.7ff8p+13, 0x1.000002p+0, 0x1.ffffp-24, 0x1.7ff802p+13); TEST_fff_f (fma, 0x1.fffp+0, 0x1.00001p+0, -0x1.fffp+0, 0x1.fffp-20); @@ -4676,6 +4686,15 @@ fma_test_towardzero (void) TEST_fff_f (fma, 1.0, -1.0, 1.0, plus_zero); TEST_fff_f (fma, -1.0, 1.0, 1.0, plus_zero); TEST_fff_f (fma, -1.0, -1.0, -1.0, plus_zero); + + TEST_fff_f (fma, min_value, min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); } fesetround (save_round_mode); @@ -4723,6 +4742,15 @@ fma_test_downward (void) TEST_fff_f (fma, 1.0, -1.0, 1.0, minus_zero); TEST_fff_f (fma, -1.0, 1.0, 1.0, minus_zero); TEST_fff_f (fma, -1.0, -1.0, -1.0, minus_zero); + + TEST_fff_f (fma, min_value, min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, plus_zero, -min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, minus_zero, -min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, plus_zero, -min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, minus_zero, -min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, plus_zero, plus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, minus_zero, plus_zero, UNDERFLOW_EXCEPTION); } fesetround (save_round_mode); @@ -4770,6 +4798,15 @@ fma_test_upward (void) TEST_fff_f (fma, 1.0, -1.0, 1.0, plus_zero); TEST_fff_f (fma, -1.0, 1.0, 1.0, plus_zero); TEST_fff_f (fma, -1.0, -1.0, -1.0, plus_zero); + + TEST_fff_f (fma, min_value, min_value, plus_zero, min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, min_value, minus_zero, min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, min_value, -min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, plus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, min_value, minus_zero, minus_zero, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, plus_zero, min_subnorm_value, UNDERFLOW_EXCEPTION); + TEST_fff_f (fma, -min_value, -min_value, minus_zero, min_subnorm_value, UNDERFLOW_EXCEPTION); } fesetround (save_round_mode); @@ -9431,6 +9468,12 @@ initialize (void) LDBL_MAX, DBL_MAX, FLT_MAX); min_value = CHOOSE (LDBL_MIN, DBL_MIN, FLT_MIN, LDBL_MIN, DBL_MIN, FLT_MIN); + min_subnorm_value = CHOOSE (__LDBL_DENORM_MIN__, + __DBL_DENORM_MIN__, + __FLT_DENORM_MIN__, + __LDBL_DENORM_MIN__, + __DBL_DENORM_MIN__, + __FLT_DENORM_MIN__); (void) &plus_zero; (void) &nan_value; @@ -9439,6 +9482,7 @@ initialize (void) (void) &minus_infty; (void) &max_value; (void) &min_value; + (void) &min_subnorm_value; /* Clear all exceptions. From now on we must not get random exceptions. */ feclearexcept (FE_ALL_EXCEPT); |