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authorUlrich Drepper <drepper@redhat.com>2009-08-24 10:33:57 -0700
committerUlrich Drepper <drepper@redhat.com>2009-08-24 10:33:57 -0700
commit7b943af6cf2bfd4b94be271877a10128c32d03da (patch)
tree61e48476a7cfc36f79a21c828aebda8157d606ef /math/math.h
parentef72d5f1b95fe91b032de0ad1ee777d7cf4fb49f (diff)
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Define math_errhandling is possible.
Diffstat (limited to 'math/math.h')
-rw-r--r--math/math.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/math/math.h b/math/math.h
index c50b2e7..4e65678 100644
--- a/math/math.h
+++ b/math/math.h
@@ -1,5 +1,5 @@
/* Declarations for math functions.
- Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006
+ Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006, 2009
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -101,7 +101,7 @@ __BEGIN_DECLS
&& (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
# ifdef __LDBL_COMPAT
-# ifdef __USE_ISOC99
+# ifdef __USE_ISOC99
extern float __nldbl_nexttowardf (float __x, long double __y)
__THROW __attribute__ ((__const__));
# ifdef __REDIRECT_NTH
@@ -277,6 +277,13 @@ enum
# define MATH_ERRNO 1 /* errno set by math functions. */
# define MATH_ERREXCEPT 2 /* Exceptions raised by math functions. */
+/* By default all functions support both errno and exception handling.
+ In gcc's fast math mode and if inline functions are defined this
+ might not be true. */
+# ifndef __FAST_MATH__
+# define math_errhandling (MATH_ERRNO | MATH_ERREXCEPT)
+# endif
+
#endif /* Use ISO C99. */
#ifdef __USE_MISC