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Define C++17 std::hypot without _GLIBCXX_USE_C99_MATH_TR1 

* include/c_global/cmath (hypot, __hypot3): Move C++17 overloads
	outside _GLIBCXX_USE_C99_MATH_TR1 condition.

From-SVN: r240620
This commit is contained in:
Jonathan Wakely 2016-09-29 14:25:48 +01:00 committed by Jonathan Wakely
parent a9087411ad
commit 998e01a6d5
2 changed files with 52 additions and 40 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,3 +1,8 @@
2016-09-29 Jonathan Wakely <jwakely@redhat.com>
* include/c_global/cmath (hypot, __hypot3): Move C++17 overloads
outside _GLIBCXX_USE_C99_MATH_TR1 condition.
2016-09-29 Alan Modra <amodra@gmail.com>
* configure.ac (LONG_DOUBLE_COMPAT_FLAGS): New ACSUBST.

87
libstdc++-v3/include/c_global/cmath
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@ -1455,46 +1455,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
return hypot(__type(__x), __type(__y));
}
#if __cplusplus > 201402L
#define __cpp_lib_hypot 201603
// [c.math.hypot3], three-dimensional hypotenuse
template<typename _Tp>
inline _Tp
__hypot3(_Tp __x, _Tp __y, _Tp __z)
{
__x = std::abs(__x);
__y = std::abs(__y);
__z = std::abs(__z);
if (_Tp __a = __x < __y ? __y < __z ? __z : __y : __x < __z ? __z : __x)
return __a * std::sqrt((__x / __a) * (__x / __a)
+ (__y / __a) * (__y / __a)
+ (__z / __a) * (__z / __a));
else
return {};
}
inline float
hypot(float __x, float __y, float __z)
{ return std::__hypot3<float>(__x, __y, __z); }
inline double
hypot(double __x, double __y, double __z)
{ return std::__hypot3<double>(__x, __y, __z); }
inline long double
hypot(long double __x, long double __y, long double __z)
{ return std::__hypot3<long double>(__x, __y, __z); }
template<typename _Tp, typename _Up, typename _Vp>
typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type
hypot(_Tp __x, _Up __y, _Vp __z)
{
using __type = typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type;
return std::__hypot3<__type>(__x, __y, __z);
}
#endif // C++17
#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
constexpr int
ilogb(float __x)
@ -1830,6 +1790,53 @@ _GLIBCXX_END_NAMESPACE_VERSION
#endif // C++11
#if __cplusplus > 201402L
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
// [c.math.hypot3], three-dimensional hypotenuse
#define __cpp_lib_hypot 201603
template<typename _Tp>
inline _Tp
__hypot3(_Tp __x, _Tp __y, _Tp __z)
{
__x = std::abs(__x);
__y = std::abs(__y);
__z = std::abs(__z);
if (_Tp __a = __x < __y ? __y < __z ? __z : __y : __x < __z ? __z : __x)
return __a * std::sqrt((__x / __a) * (__x / __a)
+ (__y / __a) * (__y / __a)
+ (__z / __a) * (__z / __a));
else
return {};
}
inline float
hypot(float __x, float __y, float __z)
{ return std::__hypot3<float>(__x, __y, __z); }
inline double
hypot(double __x, double __y, double __z)
{ return std::__hypot3<double>(__x, __y, __z); }
inline long double
hypot(long double __x, long double __y, long double __z)
{ return std::__hypot3<long double>(__x, __y, __z); }
template<typename _Tp, typename _Up, typename _Vp>
typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type
hypot(_Tp __x, _Up __y, _Vp __z)
{
using __type = typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type;
return std::__hypot3<__type>(__x, __y, __z);
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif // C++17
#if _GLIBCXX_USE_STD_SPEC_FUNCS
# include <bits/specfun.h>
#endif