diff options
Diffstat (limited to 'include/math.h')
| -rw-r--r-- | include/math.h | 76 |
1 files changed, 65 insertions, 11 deletions
diff --git a/include/math.h b/include/math.h index 8c11b5a76..c50b2e7b0 100644 --- a/include/math.h +++ b/include/math.h @@ -1,5 +1,6 @@ /* Declarations for math functions. - Copyright (C) 1991,92,93,95,96,97,98,99,2001 Free Software Foundation, Inc. + Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -31,15 +32,20 @@ __BEGIN_DECLS /* Get machine-dependent HUGE_VAL value (returned on overflow). On all IEEE754 machines, this is +Infinity. */ #include <bits/huge_val.h> +#ifdef __USE_ISOC99 +# include <bits/huge_valf.h> +# include <bits/huge_vall.h> + +/* Get machine-dependent INFINITY value. */ +# include <bits/inf.h> -#ifdef __USE_ISOC99 /* Get machine-dependent NAN value (returned for some domain errors). */ # include <bits/nan.h> -#endif +#endif /* __USE_ISOC99 */ + /* Get general and ISO C99 specific information. */ #include <bits/mathdef.h> - /* The file <bits/mathcalls.h> contains the prototypes for all the actual math functions. These macros are used for those prototypes, so we can easily declare each function as both `name' and `__name', @@ -60,8 +66,12 @@ __BEGIN_DECLS #define _Mdouble_ double #define __MATH_PRECNAME(name,r) __CONCAT(name,r) +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_STD #include <bits/mathcalls.h> #undef _Mdouble_ +#undef _Mdouble_BEGIN_NAMESPACE +#undef _Mdouble_END_NAMESPACE #undef __MATH_PRECNAME #if defined __USE_MISC || defined __USE_ISOC99 @@ -79,14 +89,44 @@ __BEGIN_DECLS # else # define __MATH_PRECNAME(name,r) name/**/f/**/r # endif +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99 +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99 # include <bits/mathcalls.h> # undef _Mdouble_ +# undef _Mdouble_BEGIN_NAMESPACE +# undef _Mdouble_END_NAMESPACE # undef __MATH_PRECNAME -# if (__STDC__ - 0 || __GNUC__ - 0) && !defined __NO_LONG_DOUBLE_MATH +# if (__STDC__ - 0 || __GNUC__ - 0) \ + && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT) +# ifdef __LDBL_COMPAT + +# ifdef __USE_ISOC99 +extern float __nldbl_nexttowardf (float __x, long double __y) + __THROW __attribute__ ((__const__)); +# ifdef __REDIRECT_NTH +extern float __REDIRECT_NTH (nexttowardf, (float __x, long double __y), + __nldbl_nexttowardf) + __attribute__ ((__const__)); +extern double __REDIRECT_NTH (nexttoward, (double __x, long double __y), + nextafter) __attribute__ ((__const__)); +extern long double __REDIRECT_NTH (nexttowardl, + (long double __x, long double __y), + nextafter) __attribute__ ((__const__)); +# endif +# endif + /* Include the file of declarations again, this time using `long double' instead of `double' and appending l to each function name. */ +# undef __MATHDECL_1 +# define __MATHDECL_2(type, function,suffix, args, alias) \ + extern type __REDIRECT_NTH(__MATH_PRECNAME(function,suffix), \ + args, alias) +# define __MATHDECL_1(type, function,suffix, args) \ + __MATHDECL_2(type, function,suffix, args, __CONCAT(function,suffix)) +# endif + # ifndef _Mlong_double_ # define _Mlong_double_ long double # endif @@ -96,8 +136,12 @@ __BEGIN_DECLS # else # define __MATH_PRECNAME(name,r) name/**/l/**/r # endif +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99 +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99 # include <bits/mathcalls.h> # undef _Mdouble_ +# undef _Mdouble_BEGIN_NAMESPACE +# undef _Mdouble_END_NAMESPACE # undef __MATH_PRECNAME # endif /* __STDC__ || __GNUC__ */ @@ -345,18 +389,28 @@ extern int matherr (struct exception *__exc); # define __NO_MATH_INLINES 1 #endif +#if defined __USE_ISOC99 && __GNUC_PREREQ(2,97) +/* ISO C99 defines some macros to compare number while taking care for + unordered numbers. Many FPUs provide special instructions to support + these operations. Generic support in GCC for these as builtins went + in before 3.0.0, but not all cpus added their patterns. We define + versions that use the builtins here, and <bits/mathinline.h> will + undef/redefine as appropriate for the specific GCC version in use. */ +# define isgreater(x, y) __builtin_isgreater(x, y) +# define isgreaterequal(x, y) __builtin_isgreaterequal(x, y) +# define isless(x, y) __builtin_isless(x, y) +# define islessequal(x, y) __builtin_islessequal(x, y) +# define islessgreater(x, y) __builtin_islessgreater(x, y) +# define isunordered(u, v) __builtin_isunordered(u, v) +#endif + /* Get machine-dependent inline versions (if there are any). */ #ifdef __USE_EXTERN_INLINES # include <bits/mathinline.h> #endif - #ifdef __USE_ISOC99 -/* ISO C99 defines some macros to compare number while taking care for - unordered numbers. Many FPUs provide special instructions to support - these operations and these tests are defined in <bits/mathinline.h>, - we define the generic macros at this late point and only if they are - not defined yet. */ +/* If we've still got undefined comparison macros, provide defaults. */ /* Return nonzero value if X is greater than Y. */ # ifndef isgreater |