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| author | Ulrich Drepper <drepper@redhat.com> | 2005-10-13 19:08:37 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-10-13 19:08:37 +0000 |
| commit | 72c7a71de49af5e025f5c064079b25631af6c457 (patch) | |
| tree | f23a04f2d44106152e2efef0f9da08e38dd2090e /math | |
| parent | 1676aaeffd2e156e6d15d3aa59c35214e6a6a2b1 (diff) | |
| download | glibc-72c7a71de49af5e025f5c064079b25631af6c457.zip glibc-72c7a71de49af5e025f5c064079b25631af6c457.tar.gz glibc-72c7a71de49af5e025f5c064079b25631af6c457.tar.bz2 | |
[BZ #1466]
* sysdeps/generic/s_csqrt.c (__csqrt): For zero real part, return
principal square root.
* sysdeps/generic/s_csqrtf.c (__csqrtf): Likewise.
* sysdeps/generic/s_csqrtl.c (__csqrtl): Likewise.
* math/libm-test.inc (csqrt_test): Add test for returning
principal value.
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index be05222..1550901 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -1,4 +1,4 @@ -/* Copyright (C) 1997-2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 1997-2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Andreas Jaeger <aj@suse.de>, 1997. @@ -153,6 +153,7 @@ #define M_PI2_LOG10El M_PI_2l * M_LOG10El #define M_PI4_LOG10El M_PI_4l * M_LOG10El #define M_PI_LOG10El M_PIl * M_LOG10El +#define M_SQRT_2_2 0.70710678118654752440084436210484903L /* sqrt (2) / 2 */ static FILE *ulps_file; /* File to document difference. */ static int output_ulps; /* Should ulps printed? */ @@ -2212,6 +2213,9 @@ csqrt_test (void) TEST_c_c (csqrt, 0.75L, 1.25L, 1.05065169626078392338656675760808326L, 0.594868882070379067881984030639932657L); TEST_c_c (csqrt, -2, -3, 0.89597747612983812471573375529004348L, -1.6741492280355400404480393008490519L); TEST_c_c (csqrt, -2, 3, 0.89597747612983812471573375529004348L, 1.6741492280355400404480393008490519L); + /* Principal square root should be returned (i.e., non-negative real + part). */ + TEST_c_c (csqrt, 0, -1, M_SQRT_2_2, -M_SQRT_2_2); END (csqrt, complex); } |