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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2010-06-10 22:20:17 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2010-06-10 22:23:54 +0200
commit0f0cf7ec49719ab3c357813689bf1095234d6533 (patch)
treea696368bfa111461e2501fceb0bb43dea5170aac /test/math
parent0671149ee68ee76d357c6dade14249fc9858d934 (diff)
lgamma: fix sign handling
add testcase from http://sourceware.org/bugzilla/show_bug.cgi?id=4407 Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'test/math')
-rw-r--r--test/math/Makefile.in3
-rw-r--r--test/math/signgam.c18
2 files changed, 20 insertions, 1 deletions
diff --git a/test/math/Makefile.in b/test/math/Makefile.in
index b160c875d..8a46e77db 100644
--- a/test/math/Makefile.in
+++ b/test/math/Makefile.in
@@ -1,7 +1,7 @@
# uClibc math tests
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
-TESTS := basic-test rint tst-definitions test-fpucw test-float test-ifloat test-double test-idouble
+TESTS := basic-test rint signgam tst-definitions test-fpucw test-float test-ifloat test-double test-idouble
ifeq ($(UCLIBC_HAS_LONG_DOUBLE_MATH),y)
TESTS += test-ldouble test-ildoubl compile_test
else
@@ -9,6 +9,7 @@ CFLAGS_basic-test := -DNO_LONG_DOUBLE
endif
DODIFF_rint := 1
+DODIFF_signgam := 1
# NOTE: For basic-test we must disable the floating point optimization.
# Only for sh architecture because in the other architecture are disabled.
diff --git a/test/math/signgam.c b/test/math/signgam.c
new file mode 100644
index 000000000..c60375aec
--- /dev/null
+++ b/test/math/signgam.c
@@ -0,0 +1,18 @@
+#define _XOPEN_SOURCE 600
+#include <math.h>
+#include <stdio.h>
+
+double zero = 0.0;
+double mzero;
+
+int
+main (void)
+{
+ double d;
+ mzero = copysign (zero, -1.0);
+ d = lgamma (zero);
+ printf ("%g %d\n", d, signgam);
+ d = lgamma (mzero);
+ printf ("%g %d\n", d, signgam);
+ return 0;
+}