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c++
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4.4.4
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/usr/include/c++/4.4.4/cmath
(15560B)
// -*- C++ -*- C forwarding header. // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, // 2006, 2007, 2008, 2009 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file include/cmath * This is a Standard C++ Library file. You should @c #include this file * in your programs, rather than any of the "*.h" implementation files. * * This is the C++ version of the Standard C Library header @c math.h, * and its contents are (mostly) the same as that header, but are all * contained in the namespace @c std (except for names which are defined * as macros in C). */ // // ISO C++ 14882: 26.5 C library // #pragma GCC system_header #include <bits/c++config.h> #include <bits/cpp_type_traits.h> #include <ext/type_traits.h> #include <math.h> #ifndef _GLIBCXX_CMATH #define _GLIBCXX_CMATH 1 // Get rid of those macros defined in <math.h> in lieu of real functions. #undef abs #undef div #undef acos #undef asin #undef atan #undef atan2 #undef ceil #undef cos #undef cosh #undef exp #undef fabs #undef floor #undef fmod #undef frexp #undef ldexp #undef log #undef log10 #undef modf #undef pow #undef sin #undef sinh #undef sqrt #undef tan #undef tanh _GLIBCXX_BEGIN_NAMESPACE(std) // Forward declaration of a helper function. This really should be // an `exported' forward declaration. template<typename _Tp> _Tp __cmath_power(_Tp, unsigned int); template<typename _Tp> inline _Tp __pow_helper(_Tp __x, int __n) { return __n < 0 ? _Tp(1)/__cmath_power(__x, -__n) : __cmath_power(__x, __n); } inline double abs(double __x) { return __builtin_fabs(__x); } inline float abs(float __x) { return __builtin_fabsf(__x); } inline long double abs(long double __x) { return __builtin_fabsl(__x); } using ::acos; inline float acos(float __x) { return __builtin_acosf(__x); } inline long double acos(long double __x) { return __builtin_acosl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type acos(_Tp __x) { return __builtin_acos(__x); } using ::asin; inline float asin(float __x) { return __builtin_asinf(__x); } inline long double asin(long double __x) { return __builtin_asinl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type asin(_Tp __x) { return __builtin_asin(__x); } using ::atan; inline float atan(float __x) { return __builtin_atanf(__x); } inline long double atan(long double __x) { return __builtin_atanl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type atan(_Tp __x) { return __builtin_atan(__x); } using ::atan2; inline float atan2(float __y, float __x) { return __builtin_atan2f(__y, __x); } inline long double atan2(long double __y, long double __x) { return __builtin_atan2l(__y, __x); } template<typename _Tp, typename _Up> inline typename __gnu_cxx::__promote_2< typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value && __is_arithmetic<_Up>::__value, _Tp>::__type, _Up>::__type atan2(_Tp __y, _Up __x) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return atan2(__type(__y), __type(__x)); } using ::ceil; inline float ceil(float __x) { return __builtin_ceilf(__x); } inline long double ceil(long double __x) { return __builtin_ceill(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type ceil(_Tp __x) { return __builtin_ceil(__x); } using ::cos; inline float cos(float __x) { return __builtin_cosf(__x); } inline long double cos(long double __x) { return __builtin_cosl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type cos(_Tp __x) { return __builtin_cos(__x); } using ::cosh; inline float cosh(float __x) { return __builtin_coshf(__x); } inline long double cosh(long double __x) { return __builtin_coshl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type cosh(_Tp __x) { return __builtin_cosh(__x); } using ::exp; inline float exp(float __x) { return __builtin_expf(__x); } inline long double exp(long double __x) { return __builtin_expl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type exp(_Tp __x) { return __builtin_exp(__x); } using ::fabs; inline float fabs(float __x) { return __builtin_fabsf(__x); } inline long double fabs(long double __x) { return __builtin_fabsl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type fabs(_Tp __x) { return __builtin_fabs(__x); } using ::floor; inline float floor(float __x) { return __builtin_floorf(__x); } inline long double floor(long double __x) { return __builtin_floorl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type floor(_Tp __x) { return __builtin_floor(__x); } using ::fmod; inline float fmod(float __x, float __y) { return __builtin_fmodf(__x, __y); } inline long double fmod(long double __x, long double __y) { return __builtin_fmodl(__x, __y); } using ::frexp; inline float frexp(float __x, int* __exp) { return __builtin_frexpf(__x, __exp); } inline long double frexp(long double __x, int* __exp) { return __builtin_frexpl(__x, __exp); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type frexp(_Tp __x, int* __exp) { return __builtin_frexp(__x, __exp); } using ::ldexp; inline float ldexp(float __x, int __exp) { return __builtin_ldexpf(__x, __exp); } inline long double ldexp(long double __x, int __exp) { return __builtin_ldexpl(__x, __exp); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type ldexp(_Tp __x, int __exp) { return __builtin_ldexp(__x, __exp); } using ::log; inline float log(float __x) { return __builtin_logf(__x); } inline long double log(long double __x) { return __builtin_logl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type log(_Tp __x) { return __builtin_log(__x); } using ::log10; inline float log10(float __x) { return __builtin_log10f(__x); } inline long double log10(long double __x) { return __builtin_log10l(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type log10(_Tp __x) { return __builtin_log10(__x); } using ::modf; inline float modf(float __x, float* __iptr) { return __builtin_modff(__x, __iptr); } inline long double modf(long double __x, long double* __iptr) { return __builtin_modfl(__x, __iptr); } using ::pow; inline float pow(float __x, float __y) { return __builtin_powf(__x, __y); } inline long double pow(long double __x, long double __y) { return __builtin_powl(__x, __y); } #ifndef __GXX_EXPERIMENTAL_CXX0X__ // _GLIBCXX_RESOLVE_LIB_DEFECTS // DR 550. What should the return type of pow(float,int) be? inline double pow(double __x, int __i) { return __builtin_powi(__x, __i); } inline float pow(float __x, int __n) { return __builtin_powif(__x, __n); } inline long double pow(long double __x, int __n) { return __builtin_powil(__x, __n); } #endif template<typename _Tp, typename _Up> inline typename __gnu_cxx::__promote_2< typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value && __is_arithmetic<_Up>::__value, _Tp>::__type, _Up>::__type pow(_Tp __x, _Up __y) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return pow(__type(__x), __type(__y)); } using ::sin; inline float sin(float __x) { return __builtin_sinf(__x); } inline long double sin(long double __x) { return __builtin_sinl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type sin(_Tp __x) { return __builtin_sin(__x); } using ::sinh; inline float sinh(float __x) { return __builtin_sinhf(__x); } inline long double sinh(long double __x) { return __builtin_sinhl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type sinh(_Tp __x) { return __builtin_sinh(__x); } using ::sqrt; inline float sqrt(float __x) { return __builtin_sqrtf(__x); } inline long double sqrt(long double __x) { return __builtin_sqrtl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type sqrt(_Tp __x) { return __builtin_sqrt(__x); } using ::tan; inline float tan(float __x) { return __builtin_tanf(__x); } inline long double tan(long double __x) { return __builtin_tanl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type tan(_Tp __x) { return __builtin_tan(__x); } using ::tanh; inline float tanh(float __x) { return __builtin_tanhf(__x); } inline long double tanh(long double __x) { return __builtin_tanhl(__x); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, double>::__type tanh(_Tp __x) { return __builtin_tanh(__x); } _GLIBCXX_END_NAMESPACE #if _GLIBCXX_USE_C99_MATH #if !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC // These are possible macros imported from C99-land. #undef fpclassify #undef isfinite #undef isinf #undef isnan #undef isnormal #undef signbit #undef isgreater #undef isgreaterequal #undef isless #undef islessequal #undef islessgreater #undef isunordered _GLIBCXX_BEGIN_NAMESPACE(std) template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type fpclassify(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, __type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isfinite(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isfinite(__type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isinf(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isinf(__type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isnan(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isnan(__type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isnormal(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isnormal(__type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type signbit(_Tp __f) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_signbit(__type(__f)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isgreater(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isgreater(__type(__f1), __type(__f2)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isgreaterequal(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isgreaterequal(__type(__f1), __type(__f2)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isless(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isless(__type(__f1), __type(__f2)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type islessequal(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_islessequal(__type(__f1), __type(__f2)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type islessgreater(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_islessgreater(__type(__f1), __type(__f2)); } template<typename _Tp> inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value, int>::__type isunordered(_Tp __f1, _Tp __f2) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __builtin_isunordered(__type(__f1), __type(__f2)); } _GLIBCXX_END_NAMESPACE #endif /* _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC */ #endif #ifndef _GLIBCXX_EXPORT_TEMPLATE # include <bits/cmath.tcc> #endif #ifdef __GXX_EXPERIMENTAL_CXX0X__ # if defined(_GLIBCXX_INCLUDE_AS_TR1) # error C++0x header cannot be included from TR1 header # endif # if defined(_GLIBCXX_INCLUDE_AS_CXX0X) # include <tr1_impl/cmath> # else # define _GLIBCXX_INCLUDE_AS_CXX0X # define _GLIBCXX_BEGIN_NAMESPACE_TR1 # define _GLIBCXX_END_NAMESPACE_TR1 # define _GLIBCXX_TR1 # include <tr1_impl/cmath> # undef _GLIBCXX_TR1 # undef _GLIBCXX_END_NAMESPACE_TR1 # undef _GLIBCXX_BEGIN_NAMESPACE_TR1 # undef _GLIBCXX_INCLUDE_AS_CXX0X # endif #endif #endif
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