// -*- C++ -*- C forwarding header.
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-// 2006, 2007, 2008, 2009
+// 2006, 2007, 2008, 2009, 2010, 2011
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
/** @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.
+ * in your programs, rather than any of the @a *.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
#undef tan
#undef tanh
-_GLIBCXX_BEGIN_NAMESPACE(std)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
- // 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
+#if !defined(__CORRECT_ISO_CPP_MATH_H_PROTO1) \
+ && !defined(__CORRECT_ISO_CPP_MATH_H_PROTO2)
+ inline _GLIBCXX_CONSTEXPR double
abs(double __x)
{ return __builtin_fabs(__x); }
+#endif
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
abs(float __x)
{ return __builtin_fabsf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
abs(long double __x)
{ return __builtin_fabsl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
abs(_Tp __x)
{ return __builtin_fabs(__x); }
using ::acos;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
acos(float __x)
{ return __builtin_acosf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
acos(long double __x)
{ return __builtin_acosl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
acos(_Tp __x)
{ return __builtin_acos(__x); }
using ::asin;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
asin(float __x)
{ return __builtin_asinf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
asin(long double __x)
{ return __builtin_asinl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
asin(_Tp __x)
{ return __builtin_asin(__x); }
using ::atan;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
atan(float __x)
{ return __builtin_atanf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
atan(long double __x)
{ return __builtin_atanl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
atan(_Tp __x)
{ return __builtin_atan(__x); }
using ::atan2;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
atan2(float __y, float __x)
{ return __builtin_atan2f(__y, __x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
atan2(long double __y, long double __x)
{ return __builtin_atan2l(__y, __x); }
+#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
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
atan2(_Tp __y, _Up __x)
{
typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
using ::ceil;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
ceil(float __x)
{ return __builtin_ceilf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
ceil(long double __x)
{ return __builtin_ceill(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
ceil(_Tp __x)
{ return __builtin_ceil(__x); }
using ::cos;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
cos(float __x)
{ return __builtin_cosf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
cos(long double __x)
{ return __builtin_cosl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
cos(_Tp __x)
{ return __builtin_cos(__x); }
using ::cosh;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
cosh(float __x)
{ return __builtin_coshf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
cosh(long double __x)
{ return __builtin_coshl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
cosh(_Tp __x)
{ return __builtin_cosh(__x); }
using ::exp;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
exp(float __x)
{ return __builtin_expf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
exp(long double __x)
{ return __builtin_expl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
exp(_Tp __x)
{ return __builtin_exp(__x); }
using ::fabs;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
fabs(float __x)
{ return __builtin_fabsf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
fabs(long double __x)
{ return __builtin_fabsl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
fabs(_Tp __x)
{ return __builtin_fabs(__x); }
using ::floor;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
floor(float __x)
{ return __builtin_floorf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
floor(long double __x)
{ return __builtin_floorl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
floor(_Tp __x)
{ return __builtin_floor(__x); }
using ::fmod;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
fmod(float __x, float __y)
{ return __builtin_fmodf(__x, __y); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
fmod(long double __x, long double __y)
{ return __builtin_fmodl(__x, __y); }
+#endif
+
+ template<typename _Tp, typename _Up>
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ fmod(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return fmod(__type(__x), __type(__y));
+ }
using ::frexp;
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
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); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ 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
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
ldexp(float __x, int __exp)
{ return __builtin_ldexpf(__x, __exp); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
ldexp(long double __x, int __exp)
{ return __builtin_ldexpl(__x, __exp); }
+#endif
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); }
+ inline _GLIBCXX_CONSTEXPR
+ 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
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
log(float __x)
{ return __builtin_logf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
log(long double __x)
{ return __builtin_logl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
log(_Tp __x)
{ return __builtin_log(__x); }
using ::log10;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
log10(float __x)
{ return __builtin_log10f(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
log10(long double __x)
{ return __builtin_log10l(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
log10(_Tp __x)
{ return __builtin_log10(__x); }
using ::modf;
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
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); }
+#endif
using ::pow;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
pow(float __x, float __y)
{ return __builtin_powf(__x, __y); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
pow(long double __x, long double __y)
{ return __builtin_powl(__x, __y); }
pow(long double __x, int __n)
{ return __builtin_powil(__x, __n); }
#endif
+#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
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
pow(_Tp __x, _Up __y)
{
typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
using ::sin;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
sin(float __x)
{ return __builtin_sinf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
sin(long double __x)
{ return __builtin_sinl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
sin(_Tp __x)
{ return __builtin_sin(__x); }
using ::sinh;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
sinh(float __x)
{ return __builtin_sinhf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
sinh(long double __x)
{ return __builtin_sinhl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
sinh(_Tp __x)
{ return __builtin_sinh(__x); }
using ::sqrt;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
sqrt(float __x)
{ return __builtin_sqrtf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
sqrt(long double __x)
{ return __builtin_sqrtl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
sqrt(_Tp __x)
{ return __builtin_sqrt(__x); }
using ::tan;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
tan(float __x)
{ return __builtin_tanf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
tan(long double __x)
{ return __builtin_tanl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
tan(_Tp __x)
{ return __builtin_tan(__x); }
using ::tanh;
- inline float
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO1
+ inline _GLIBCXX_CONSTEXPR float
tanh(float __x)
{ return __builtin_tanhf(__x); }
- inline long double
+ inline _GLIBCXX_CONSTEXPR long double
tanh(long double __x)
{ return __builtin_tanhl(__x); }
+#endif
template<typename _Tp>
- inline typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
- double>::__type
+ inline _GLIBCXX_CONSTEXPR
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
tanh(_Tp __x)
{ return __builtin_tanh(__x); }
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
#if _GLIBCXX_USE_C99_MATH
#if !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC
#undef islessgreater
#undef isunordered
-_GLIBCXX_BEGIN_NAMESPACE(std)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ constexpr int
+ fpclassify(float __x)
+ { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
+ FP_SUBNORMAL, FP_ZERO, __x); }
+
+ constexpr int
+ fpclassify(double __x)
+ { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
+ FP_SUBNORMAL, FP_ZERO, __x); }
+
+ constexpr int
+ fpclassify(long double __x)
+ { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
+ FP_SUBNORMAL, FP_ZERO, __x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ int>::__type
+ fpclassify(_Tp __x)
+ { return __x != 0 ? FP_NORMAL : FP_ZERO; }
+
+ constexpr bool
+ isfinite(float __x)
+ { return __builtin_isfinite(__x); }
+
+ constexpr bool
+ isfinite(double __x)
+ { return __builtin_isfinite(__x); }
+
+ constexpr bool
+ isfinite(long double __x)
+ { return __builtin_isfinite(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ bool>::__type
+ isfinite(_Tp __x)
+ { return true; }
+
+ constexpr bool
+ isinf(float __x)
+ { return __builtin_isinf(__x); }
+
+ constexpr bool
+ isinf(double __x)
+ { return __builtin_isinf(__x); }
+
+ constexpr bool
+ isinf(long double __x)
+ { return __builtin_isinf(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ bool>::__type
+ isinf(_Tp __x)
+ { return false; }
+
+ constexpr bool
+ isnan(float __x)
+ { return __builtin_isnan(__x); }
+
+ constexpr bool
+ isnan(double __x)
+ { return __builtin_isnan(__x); }
+
+ constexpr bool
+ isnan(long double __x)
+ { return __builtin_isnan(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ bool>::__type
+ isnan(_Tp __x)
+ { return false; }
+
+ constexpr bool
+ isnormal(float __x)
+ { return __builtin_isnormal(__x); }
+
+ constexpr bool
+ isnormal(double __x)
+ { return __builtin_isnormal(__x); }
+
+ constexpr bool
+ isnormal(long double __x)
+ { return __builtin_isnormal(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ bool>::__type
+ isnormal(_Tp __x)
+ { return __x != 0 ? true : false; }
+
+ constexpr bool
+ signbit(float __x)
+ { return __builtin_signbit(__x); }
+
+ constexpr bool
+ signbit(double __x)
+ { return __builtin_signbit(__x); }
+
+ constexpr bool
+ signbit(long double __x)
+ { return __builtin_signbit(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ bool>::__type
+ signbit(_Tp __x)
+ { return __x < 0 ? true : false; }
+
+ constexpr bool
+ isgreater(float __x, float __y)
+ { return __builtin_isgreater(__x, __y); }
+
+ constexpr bool
+ isgreater(double __x, double __y)
+ { return __builtin_isgreater(__x, __y); }
+
+ constexpr bool
+ isgreater(long double __x, long double __y)
+ { return __builtin_isgreater(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ isgreater(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_isgreater(__type(__x), __type(__y));
+ }
+
+ constexpr bool
+ isgreaterequal(float __x, float __y)
+ { return __builtin_isgreaterequal(__x, __y); }
+
+ constexpr bool
+ isgreaterequal(double __x, double __y)
+ { return __builtin_isgreaterequal(__x, __y); }
+
+ constexpr bool
+ isgreaterequal(long double __x, long double __y)
+ { return __builtin_isgreaterequal(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ isgreaterequal(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_isgreaterequal(__type(__x), __type(__y));
+ }
+
+ constexpr bool
+ isless(float __x, float __y)
+ { return __builtin_isless(__x, __y); }
+
+ constexpr bool
+ isless(double __x, double __y)
+ { return __builtin_isless(__x, __y); }
+
+ constexpr bool
+ isless(long double __x, long double __y)
+ { return __builtin_isless(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ isless(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_isless(__type(__x), __type(__y));
+ }
+
+ constexpr bool
+ islessequal(float __x, float __y)
+ { return __builtin_islessequal(__x, __y); }
+
+ constexpr bool
+ islessequal(double __x, double __y)
+ { return __builtin_islessequal(__x, __y); }
+
+ constexpr bool
+ islessequal(long double __x, long double __y)
+ { return __builtin_islessequal(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ islessequal(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_islessequal(__type(__x), __type(__y));
+ }
+
+ constexpr bool
+ islessgreater(float __x, float __y)
+ { return __builtin_islessgreater(__x, __y); }
+
+ constexpr bool
+ islessgreater(double __x, double __y)
+ { return __builtin_islessgreater(__x, __y); }
+
+ constexpr bool
+ islessgreater(long double __x, long double __y)
+ { return __builtin_islessgreater(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ islessgreater(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_islessgreater(__type(__x), __type(__y));
+ }
+
+ constexpr bool
+ isunordered(float __x, float __y)
+ { return __builtin_isunordered(__x, __y); }
+
+ constexpr bool
+ isunordered(double __x, double __y)
+ { return __builtin_isunordered(__x, __y); }
+
+ constexpr bool
+ isunordered(long double __x, long double __y)
+ { return __builtin_isunordered(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename
+ __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
+ && __is_arithmetic<_Up>::__value), bool>::__type
+ isunordered(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return __builtin_isunordered(__type(__x), __type(__y));
+ }
+
+#else
template<typename _Tp>
inline typename __gnu_cxx::__enable_if<__is_arithmetic<_Tp>::__value,
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>
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif /* _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC */
#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
+
+#ifdef _GLIBCXX_USE_C99_MATH_TR1
+
+#undef acosh
+#undef acoshf
+#undef acoshl
+#undef asinh
+#undef asinhf
+#undef asinhl
+#undef atanh
+#undef atanhf
+#undef atanhl
+#undef cbrt
+#undef cbrtf
+#undef cbrtl
+#undef copysign
+#undef copysignf
+#undef copysignl
+#undef erf
+#undef erff
+#undef erfl
+#undef erfc
+#undef erfcf
+#undef erfcl
+#undef exp2
+#undef exp2f
+#undef exp2l
+#undef expm1
+#undef expm1f
+#undef expm1l
+#undef fdim
+#undef fdimf
+#undef fdiml
+#undef fma
+#undef fmaf
+#undef fmal
+#undef fmax
+#undef fmaxf
+#undef fmaxl
+#undef fmin
+#undef fminf
+#undef fminl
+#undef hypot
+#undef hypotf
+#undef hypotl
+#undef ilogb
+#undef ilogbf
+#undef ilogbl
+#undef lgamma
+#undef lgammaf
+#undef lgammal
+#undef llrint
+#undef llrintf
+#undef llrintl
+#undef llround
+#undef llroundf
+#undef llroundl
+#undef log1p
+#undef log1pf
+#undef log1pl
+#undef log2
+#undef log2f
+#undef log2l
+#undef logb
+#undef logbf
+#undef logbl
+#undef lrint
+#undef lrintf
+#undef lrintl
+#undef lround
+#undef lroundf
+#undef lroundl
+#undef nan
+#undef nanf
+#undef nanl
+#undef nearbyint
+#undef nearbyintf
+#undef nearbyintl
+#undef nextafter
+#undef nextafterf
+#undef nextafterl
+#undef nexttoward
+#undef nexttowardf
+#undef nexttowardl
+#undef remainder
+#undef remainderf
+#undef remainderl
+#undef remquo
+#undef remquof
+#undef remquol
+#undef rint
+#undef rintf
+#undef rintl
+#undef round
+#undef roundf
+#undef roundl
+#undef scalbln
+#undef scalblnf
+#undef scalblnl
+#undef scalbn
+#undef scalbnf
+#undef scalbnl
+#undef tgamma
+#undef tgammaf
+#undef tgammal
+#undef trunc
+#undef truncf
+#undef truncl
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // types
+ using ::double_t;
+ using ::float_t;
+
+ // functions
+ using ::acosh;
+ using ::acoshf;
+ using ::acoshl;
+
+ using ::asinh;
+ using ::asinhf;
+ using ::asinhl;
+
+ using ::atanh;
+ using ::atanhf;
+ using ::atanhl;
+
+ using ::cbrt;
+ using ::cbrtf;
+ using ::cbrtl;
+
+ using ::copysign;
+ using ::copysignf;
+ using ::copysignl;
+
+ using ::erf;
+ using ::erff;
+ using ::erfl;
+
+ using ::erfc;
+ using ::erfcf;
+ using ::erfcl;
+
+ using ::exp2;
+ using ::exp2f;
+ using ::exp2l;
+
+ using ::expm1;
+ using ::expm1f;
+ using ::expm1l;
+
+ using ::fdim;
+ using ::fdimf;
+ using ::fdiml;
+
+ using ::fma;
+ using ::fmaf;
+ using ::fmal;
+
+ using ::fmax;
+ using ::fmaxf;
+ using ::fmaxl;
+
+ using ::fmin;
+ using ::fminf;
+ using ::fminl;
+
+ using ::hypot;
+ using ::hypotf;
+ using ::hypotl;
+
+ using ::ilogb;
+ using ::ilogbf;
+ using ::ilogbl;
+
+ using ::lgamma;
+ using ::lgammaf;
+ using ::lgammal;
+
+ using ::llrint;
+ using ::llrintf;
+ using ::llrintl;
+
+ using ::llround;
+ using ::llroundf;
+ using ::llroundl;
+
+ using ::log1p;
+ using ::log1pf;
+ using ::log1pl;
+
+ using ::log2;
+ using ::log2f;
+ using ::log2l;
+
+ using ::logb;
+ using ::logbf;
+ using ::logbl;
+
+ using ::lrint;
+ using ::lrintf;
+ using ::lrintl;
+
+ using ::lround;
+ using ::lroundf;
+ using ::lroundl;
+
+ using ::nan;
+ using ::nanf;
+ using ::nanl;
+
+ using ::nearbyint;
+ using ::nearbyintf;
+ using ::nearbyintl;
+
+ using ::nextafter;
+ using ::nextafterf;
+ using ::nextafterl;
+
+ using ::nexttoward;
+ using ::nexttowardf;
+ using ::nexttowardl;
+
+ using ::remainder;
+ using ::remainderf;
+ using ::remainderl;
+
+ using ::remquo;
+ using ::remquof;
+ using ::remquol;
+
+ using ::rint;
+ using ::rintf;
+ using ::rintl;
+
+ using ::round;
+ using ::roundf;
+ using ::roundl;
+
+ using ::scalbln;
+ using ::scalblnf;
+ using ::scalblnl;
+
+ using ::scalbn;
+ using ::scalbnf;
+ using ::scalbnl;
+
+ using ::tgamma;
+ using ::tgammaf;
+ using ::tgammal;
+
+ using ::trunc;
+ using ::truncf;
+ using ::truncl;
+
+ /// Additional overloads.
+ constexpr float
+ acosh(float __x)
+ { return __builtin_acoshf(__x); }
+
+ constexpr long double
+ acosh(long double __x)
+ { return __builtin_acoshl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ acosh(_Tp __x)
+ { return __builtin_acosh(__x); }
+
+ constexpr float
+ asinh(float __x)
+ { return __builtin_asinhf(__x); }
+
+ constexpr long double
+ asinh(long double __x)
+ { return __builtin_asinhl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ asinh(_Tp __x)
+ { return __builtin_asinh(__x); }
+
+ constexpr float
+ atanh(float __x)
+ { return __builtin_atanhf(__x); }
+
+ constexpr long double
+ atanh(long double __x)
+ { return __builtin_atanhl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ atanh(_Tp __x)
+ { return __builtin_atanh(__x); }
+
+ constexpr float
+ cbrt(float __x)
+ { return __builtin_cbrtf(__x); }
+
+ constexpr long double
+ cbrt(long double __x)
+ { return __builtin_cbrtl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ cbrt(_Tp __x)
+ { return __builtin_cbrt(__x); }
+
+ constexpr float
+ copysign(float __x, float __y)
+ { return __builtin_copysignf(__x, __y); }
+
+ constexpr long double
+ copysign(long double __x, long double __y)
+ { return __builtin_copysignl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ copysign(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return copysign(__type(__x), __type(__y));
+ }
+
+ constexpr float
+ erf(float __x)
+ { return __builtin_erff(__x); }
+
+ constexpr long double
+ erf(long double __x)
+ { return __builtin_erfl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ erf(_Tp __x)
+ { return __builtin_erf(__x); }
+
+ constexpr float
+ erfc(float __x)
+ { return __builtin_erfcf(__x); }
+
+ constexpr long double
+ erfc(long double __x)
+ { return __builtin_erfcl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ erfc(_Tp __x)
+ { return __builtin_erfc(__x); }
+
+ constexpr float
+ exp2(float __x)
+ { return __builtin_exp2f(__x); }
+
+ constexpr long double
+ exp2(long double __x)
+ { return __builtin_exp2l(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ exp2(_Tp __x)
+ { return __builtin_exp2(__x); }
+
+ constexpr float
+ expm1(float __x)
+ { return __builtin_expm1f(__x); }
+
+ constexpr long double
+ expm1(long double __x)
+ { return __builtin_expm1l(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ expm1(_Tp __x)
+ { return __builtin_expm1(__x); }
+
+ constexpr float
+ fdim(float __x, float __y)
+ { return __builtin_fdimf(__x, __y); }
+
+ constexpr long double
+ fdim(long double __x, long double __y)
+ { return __builtin_fdiml(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ fdim(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return fdim(__type(__x), __type(__y));
+ }
+
+ constexpr float
+ fma(float __x, float __y, float __z)
+ { return __builtin_fmaf(__x, __y, __z); }
+
+ constexpr long double
+ fma(long double __x, long double __y, long double __z)
+ { return __builtin_fmal(__x, __y, __z); }
+
+ template<typename _Tp, typename _Up, typename _Vp>
+ constexpr typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type
+ fma(_Tp __x, _Up __y, _Vp __z)
+ {
+ typedef typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type __type;
+ return fma(__type(__x), __type(__y), __type(__z));
+ }
+
+ constexpr float
+ fmax(float __x, float __y)
+ { return __builtin_fmaxf(__x, __y); }
+
+ constexpr long double
+ fmax(long double __x, long double __y)
+ { return __builtin_fmaxl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ fmax(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return fmax(__type(__x), __type(__y));
+ }
+
+ constexpr float
+ fmin(float __x, float __y)
+ { return __builtin_fminf(__x, __y); }
+
+ constexpr long double
+ fmin(long double __x, long double __y)
+ { return __builtin_fminl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ fmin(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return fmin(__type(__x), __type(__y));
+ }
+
+ constexpr float
+ hypot(float __x, float __y)
+ { return __builtin_hypotf(__x, __y); }
+
+ constexpr long double
+ hypot(long double __x, long double __y)
+ { return __builtin_hypotl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ hypot(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return hypot(__type(__x), __type(__y));
+ }
+
+ constexpr int
+ ilogb(float __x)
+ { return __builtin_ilogbf(__x); }
+
+ constexpr int
+ ilogb(long double __x)
+ { return __builtin_ilogbl(__x); }
+
+ template<typename _Tp>
+ constexpr
+ typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ int>::__type
+ ilogb(_Tp __x)
+ { return __builtin_ilogb(__x); }
+
+ constexpr float
+ lgamma(float __x)
+ { return __builtin_lgammaf(__x); }
+
+ constexpr long double
+ lgamma(long double __x)
+ { return __builtin_lgammal(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ lgamma(_Tp __x)
+ { return __builtin_lgamma(__x); }
+
+ constexpr long long
+ llrint(float __x)
+ { return __builtin_llrintf(__x); }
+
+ constexpr long long
+ llrint(long double __x)
+ { return __builtin_llrintl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ long long>::__type
+ llrint(_Tp __x)
+ { return __builtin_llrint(__x); }
+
+ constexpr long long
+ llround(float __x)
+ { return __builtin_llroundf(__x); }
+
+ constexpr long long
+ llround(long double __x)
+ { return __builtin_llroundl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ long long>::__type
+ llround(_Tp __x)
+ { return __builtin_llround(__x); }
+
+ constexpr float
+ log1p(float __x)
+ { return __builtin_log1pf(__x); }
+
+ constexpr long double
+ log1p(long double __x)
+ { return __builtin_log1pl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ log1p(_Tp __x)
+ { return __builtin_log1p(__x); }
+
+ // DR 568.
+ constexpr float
+ log2(float __x)
+ { return __builtin_log2f(__x); }
+
+ constexpr long double
+ log2(long double __x)
+ { return __builtin_log2l(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ log2(_Tp __x)
+ { return __builtin_log2(__x); }
+
+ constexpr float
+ logb(float __x)
+ { return __builtin_logbf(__x); }
+
+ constexpr long double
+ logb(long double __x)
+ { return __builtin_logbl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ logb(_Tp __x)
+ { return __builtin_logb(__x); }
+
+ constexpr long
+ lrint(float __x)
+ { return __builtin_lrintf(__x); }
+
+ constexpr long
+ lrint(long double __x)
+ { return __builtin_lrintl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ long>::__type
+ lrint(_Tp __x)
+ { return __builtin_lrint(__x); }
+
+ constexpr long
+ lround(float __x)
+ { return __builtin_lroundf(__x); }
+
+ constexpr long
+ lround(long double __x)
+ { return __builtin_lroundl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ long>::__type
+ lround(_Tp __x)
+ { return __builtin_lround(__x); }
+
+ constexpr float
+ nearbyint(float __x)
+ { return __builtin_nearbyintf(__x); }
+
+ constexpr long double
+ nearbyint(long double __x)
+ { return __builtin_nearbyintl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ nearbyint(_Tp __x)
+ { return __builtin_nearbyint(__x); }
+
+ constexpr float
+ nextafter(float __x, float __y)
+ { return __builtin_nextafterf(__x, __y); }
+
+ constexpr long double
+ nextafter(long double __x, long double __y)
+ { return __builtin_nextafterl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ nextafter(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return nextafter(__type(__x), __type(__y));
+ }
+
+ constexpr float
+ nexttoward(float __x, long double __y)
+ { return __builtin_nexttowardf(__x, __y); }
+
+ constexpr long double
+ nexttoward(long double __x, long double __y)
+ { return __builtin_nexttowardl(__x, __y); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ nexttoward(_Tp __x, long double __y)
+ { return __builtin_nexttoward(__x, __y); }
+
+ constexpr float
+ remainder(float __x, float __y)
+ { return __builtin_remainderf(__x, __y); }
+
+ constexpr long double
+ remainder(long double __x, long double __y)
+ { return __builtin_remainderl(__x, __y); }
+
+ template<typename _Tp, typename _Up>
+ constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ remainder(_Tp __x, _Up __y)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return remainder(__type(__x), __type(__y));
+ }
+
+ inline float
+ remquo(float __x, float __y, int* __pquo)
+ { return __builtin_remquof(__x, __y, __pquo); }
+
+ inline long double
+ remquo(long double __x, long double __y, int* __pquo)
+ { return __builtin_remquol(__x, __y, __pquo); }
+
+ template<typename _Tp, typename _Up>
+ inline typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
+ remquo(_Tp __x, _Up __y, int* __pquo)
+ {
+ typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
+ return remquo(__type(__x), __type(__y), __pquo);
+ }
+
+ constexpr float
+ rint(float __x)
+ { return __builtin_rintf(__x); }
+
+ constexpr long double
+ rint(long double __x)
+ { return __builtin_rintl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ rint(_Tp __x)
+ { return __builtin_rint(__x); }
+
+ constexpr float
+ round(float __x)
+ { return __builtin_roundf(__x); }
+
+ constexpr long double
+ round(long double __x)
+ { return __builtin_roundl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ round(_Tp __x)
+ { return __builtin_round(__x); }
+
+ constexpr float
+ scalbln(float __x, long __ex)
+ { return __builtin_scalblnf(__x, __ex); }
+
+ constexpr long double
+ scalbln(long double __x, long __ex)
+ { return __builtin_scalblnl(__x, __ex); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ scalbln(_Tp __x, long __ex)
+ { return __builtin_scalbln(__x, __ex); }
+
+ constexpr float
+ scalbn(float __x, int __ex)
+ { return __builtin_scalbnf(__x, __ex); }
+
+ constexpr long double
+ scalbn(long double __x, int __ex)
+ { return __builtin_scalbnl(__x, __ex); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ scalbn(_Tp __x, int __ex)
+ { return __builtin_scalbn(__x, __ex); }
+
+ constexpr float
+ tgamma(float __x)
+ { return __builtin_tgammaf(__x); }
+
+ constexpr long double
+ tgamma(long double __x)
+ { return __builtin_tgammal(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ tgamma(_Tp __x)
+ { return __builtin_tgamma(__x); }
+
+ constexpr float
+ trunc(float __x)
+ { return __builtin_truncf(__x); }
+
+ constexpr long double
+ trunc(long double __x)
+ { return __builtin_truncl(__x); }
+
+ template<typename _Tp>
+ constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
+ double>::__type
+ trunc(_Tp __x)
+ { return __builtin_trunc(__x); }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif // _GLIBCXX_USE_C99_MATH_TR1
+
+#endif // __GXX_EXPERIMENTAL_CXX0X__
#endif
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