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| author | Joseph Myers <joseph@codesourcery.com> | 2013-08-23 19:45:38 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2013-08-23 19:45:38 +0000 |
| commit | 8fe89494e6516048759425ec30d8878a6233e00f (patch) | |
| tree | b3f65b97d02bac4f183da5fe51e01cad8b8a3780 /math | |
| parent | 936241e4b2ec90bbb97d1b37bc78726372ec966f (diff) | |
| download | glibc-8fe89494e6516048759425ec30d8878a6233e00f.tar.gz glibc-8fe89494e6516048759425ec30d8878a6233e00f.tar.xz glibc-8fe89494e6516048759425ec30d8878a6233e00f.zip | |
Fix cexp (NaN + i0) (bug 15532).
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 3 | ||||
| -rw-r--r-- | math/s_cexp.c | 14 | ||||
| -rw-r--r-- | math/s_cexpf.c | 14 | ||||
| -rw-r--r-- | math/s_cexpl.c | 14 |
4 files changed, 32 insertions, 13 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 43c4a8fd9c..e534fc0734 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -6198,7 +6198,8 @@ static const struct test_c_c_data cexp_test_data[] = TEST_c_c (cexp, plus_infty, qnan_value, plus_infty, qnan_value), - TEST_c_c (cexp, qnan_value, 0.0, qnan_value, qnan_value, INVALID_EXCEPTION_OK), + TEST_c_c (cexp, qnan_value, 0.0, qnan_value, 0.0), + TEST_c_c (cexp, qnan_value, minus_zero, qnan_value, minus_zero), TEST_c_c (cexp, qnan_value, 1.0, qnan_value, qnan_value, INVALID_EXCEPTION_OK), TEST_c_c (cexp, qnan_value, plus_infty, qnan_value, qnan_value, INVALID_EXCEPTION_OK), diff --git a/math/s_cexp.c b/math/s_cexp.c index 655e4e8dee..40e0e518d2 100644 --- a/math/s_cexp.c +++ b/math/s_cexp.c @@ -145,12 +145,18 @@ __cexp (__complex__ double x) } else { - /* If the real part is NaN the result is NaN + iNaN. */ + /* If the real part is NaN the result is NaN + iNaN unless the + imaginary part is zero. */ __real__ retval = __nan (""); - __imag__ retval = __nan (""); + if (icls == FP_ZERO) + __imag__ retval = __imag__ x; + else + { + __imag__ retval = __nan (""); - if (rcls != FP_NAN || icls != FP_NAN) - feraiseexcept (FE_INVALID); + if (rcls != FP_NAN || icls != FP_NAN) + feraiseexcept (FE_INVALID); + } } return retval; diff --git a/math/s_cexpf.c b/math/s_cexpf.c index fa942d34f7..7c42205164 100644 --- a/math/s_cexpf.c +++ b/math/s_cexpf.c @@ -145,12 +145,18 @@ __cexpf (__complex__ float x) } else { - /* If the real part is NaN the result is NaN + iNaN. */ + /* If the real part is NaN the result is NaN + iNaN unless the + imaginary part is zero. */ __real__ retval = __nanf (""); - __imag__ retval = __nanf (""); + if (icls == FP_ZERO) + __imag__ retval = __imag__ x; + else + { + __imag__ retval = __nanf (""); - if (rcls != FP_NAN || icls != FP_NAN) - feraiseexcept (FE_INVALID); + if (rcls != FP_NAN || icls != FP_NAN) + feraiseexcept (FE_INVALID); + } } return retval; diff --git a/math/s_cexpl.c b/math/s_cexpl.c index d827bc3de4..0c35603366 100644 --- a/math/s_cexpl.c +++ b/math/s_cexpl.c @@ -145,12 +145,18 @@ __cexpl (__complex__ long double x) } else { - /* If the real part is NaN the result is NaN + iNaN. */ + /* If the real part is NaN the result is NaN + iNaN unless the + imaginary part is zero. */ __real__ retval = __nanl (""); - __imag__ retval = __nanl (""); + if (icls == FP_ZERO) + __imag__ retval = __imag__ x; + else + { + __imag__ retval = __nanl (""); - if (rcls != FP_NAN || icls != FP_NAN) - feraiseexcept (FE_INVALID); + if (rcls != FP_NAN || icls != FP_NAN) + feraiseexcept (FE_INVALID); + } } return retval; |