Fix sincos errno setting (bug 15467).

This patch makes sincos set errno to EDOM when passed an infinity,
similarly to sin and cos.

Tested for x86_64, x86, powerpc and mips64.  I don't know if the
architecture-specific implementations for ia64 and m68k might need
corresponding fixes.

2015-02-11  Joseph Myers  <joseph@codesourcery.com>

	[BZ #15467]
	* sysdeps/ieee754/dbl-64/s_sincos.c: Include <errno.h>.
	(__sincos): Set errno to EDOM for infinite argument.
	* sysdeps/ieee754/flt-32/s_sincosf.c: Include <errno.h>.
	(SINCOSF_FUNC): Set errno to EDOM for infinite argument.
	* sysdeps/ieee754/ldbl-128/s_sincosl.c: Include <errno.h>.
	(__sincosl): Set errno to EDOM for infinite argument.
	* sysdeps/ieee754/ldbl-128ibm/s_sincosl.c: Include <errno.h>.
	(__sincosl): Set errno to EDOM for infinite argument.
	* sysdeps/ieee754/ldbl-96/s_sincosl.c: Include <errno.h>.
	(__sincosl): Set errno to EDOM for infinite argument.
	* math/libm-test.inc (sincos_test_data): Test errno setting.

1 files changed, 3 insertions, 3 deletions

diff --git a/math/libm-test.inc b/math/libm-test.inc
index 6d7ff12e04..aa7ba2b765 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -9335,9 +9335,9 @@ sin_test (void)
 
 static const struct test_fFF_11_data sincos_test_data[] =
   {
-    TEST_fFF_11 (sincos, plus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
-    TEST_fFF_11 (sincos, minus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
-    TEST_fFF_11 (sincos, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
+    TEST_fFF_11 (sincos, plus_infty, qnan_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
+    TEST_fFF_11 (sincos, minus_infty, qnan_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
+    TEST_fFF_11 (sincos, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
 
     AUTO_TESTS_fFF_11 (sincos),
   };