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Define math_errhandling is possible.

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This commit is contained in:
Ulrich Drepper 2009-08-24 10:33:57 -07:00
parent ef72d5f1b9
commit 7b943af6cf
3 changed files with 18 additions and 3 deletions
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4
ChangeLog
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@ -1,5 +1,9 @@
2009-08-24 Ulrich Drepper <drepper@redhat.com>
* math/math.h: Define math_errhandling of __FAST_MATH__ is not defined.
* sysdeps/i386/fpu/bits/mathinline.h: Undefine math_errhandling if we
are using the inline optimizations.
* sysdeps/x86_64/fpu/bits/mathinline.h (__signbit): Optimize.
(__signbitf): Likewise.

11
math/math.h
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@ -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

6
sysdeps/i386/fpu/bits/mathinline.h
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@ -1,5 +1,5 @@
/* Inline math functions for i387.
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2003,2004,2006,2007
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2003,2004,2006,2007,2009
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
@ -153,6 +153,10 @@ __NTH (__signbitl (long double __x))
#if ((!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) \
&& defined __OPTIMIZE__)
/* The inline functions do not set errno or raise necessarily the
correct exceptions. */
# undef math_errhandling
/* A macro to define float, double, and long double versions of various
math functions for the ix87 FPU. FUNC is the function name (which will
be suffixed with f and l for the float and long double version,