Add libc++ and libc++abi to third-party.

third_party/libcxx/include/cmath

+// -*- C++ -*-
+//===---------------------------- cmath -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_CMATH
+#define _LIBCPP_CMATH
+
+/*
+    cmath synopsis
+
+Macros:
+
+    HUGE_VAL
+    HUGE_VALF               // C99
+    HUGE_VALL               // C99
+    INFINITY                // C99
+    NAN                     // C99
+    FP_INFINITE             // C99
+    FP_NAN                  // C99
+    FP_NORMAL               // C99
+    FP_SUBNORMAL            // C99
+    FP_ZERO                 // C99
+    FP_FAST_FMA             // C99
+    FP_FAST_FMAF            // C99
+    FP_FAST_FMAL            // C99
+    FP_ILOGB0               // C99
+    FP_ILOGBNAN             // C99
+    MATH_ERRNO              // C99
+    MATH_ERREXCEPT          // C99
+    math_errhandling        // C99
+
+namespace std
+{
+
+Types:
+
+    float_t                 // C99
+    double_t                // C99
+
+// C90
+
+floating_point abs(floating_point x);
+
+floating_point acos (arithmetic x);
+float          acosf(float x);
+long double    acosl(long double x);
+
+floating_point asin (arithmetic x);
+float          asinf(float x);
+long double    asinl(long double x);
+
+floating_point atan (arithmetic x);
+float          atanf(float x);
+long double    atanl(long double x);
+
+floating_point atan2 (arithmetic y, arithmetic x);
+float          atan2f(float y, float x);
+long double    atan2l(long double y, long double x);
+
+floating_point ceil (arithmetic x);
+float          ceilf(float x);
+long double    ceill(long double x);
+
+floating_point cos (arithmetic x);
+float          cosf(float x);
+long double    cosl(long double x);
+
+floating_point cosh (arithmetic x);
+float          coshf(float x);
+long double    coshl(long double x);
+
+floating_point exp (arithmetic x);
+float          expf(float x);
+long double    expl(long double x);
+
+floating_point fabs (arithmetic x);
+float          fabsf(float x);
+long double    fabsl(long double x);
+
+floating_point floor (arithmetic x);
+float          floorf(float x);
+long double    floorl(long double x);
+
+floating_point fmod (arithmetic x, arithmetic y);
+float          fmodf(float x, float y);
+long double    fmodl(long double x, long double y);
+
+floating_point frexp (arithmetic value, int* exp);
+float          frexpf(float value, int* exp);
+long double    frexpl(long double value, int* exp);
+
+floating_point ldexp (arithmetic value, int exp);
+float          ldexpf(float value, int exp);
+long double    ldexpl(long double value, int exp);
+
+floating_point log (arithmetic x);
+float          logf(float x);
+long double    logl(long double x);
+
+floating_point log10 (arithmetic x);
+float          log10f(float x);
+long double    log10l(long double x);
+
+floating_point modf (floating_point value, floating_point* iptr);
+float          modff(float value, float* iptr);
+long double    modfl(long double value, long double* iptr);
+
+floating_point pow (arithmetic x, arithmetic y);
+float          powf(float x, float y);
+long double    powl(long double x, long double y);
+
+floating_point sin (arithmetic x);
+float          sinf(float x);
+long double    sinl(long double x);
+
+floating_point sinh (arithmetic x);
+float          sinhf(float x);
+long double    sinhl(long double x);
+
+floating_point sqrt (arithmetic x);
+float          sqrtf(float x);
+long double    sqrtl(long double x);
+
+floating_point tan (arithmetic x);
+float          tanf(float x);
+long double    tanl(long double x);
+
+floating_point tanh (arithmetic x);
+float          tanhf(float x);
+long double    tanhl(long double x);
+
+//  C99
+
+bool signbit(arithmetic x);
+
+int fpclassify(arithmetic x);
+
+bool isfinite(arithmetic x);
+bool isinf(arithmetic x);
+bool isnan(arithmetic x);
+bool isnormal(arithmetic x);
+
+bool isgreater(arithmetic x, arithmetic y);
+bool isgreaterequal(arithmetic x, arithmetic y);
+bool isless(arithmetic x, arithmetic y);
+bool islessequal(arithmetic x, arithmetic y);
+bool islessgreater(arithmetic x, arithmetic y);
+bool isunordered(arithmetic x, arithmetic y);
+
+floating_point acosh (arithmetic x);
+float          acoshf(float x);
+long double    acoshl(long double x);
+
+floating_point asinh (arithmetic x);
+float          asinhf(float x);
+long double    asinhl(long double x);
+
+floating_point atanh (arithmetic x);
+float          atanhf(float x);
+long double    atanhl(long double x);
+
+floating_point cbrt (arithmetic x);
+float          cbrtf(float x);
+long double    cbrtl(long double x);
+
+floating_point copysign (arithmetic x, arithmetic y);
+float          copysignf(float x, float y);
+long double    copysignl(long double x, long double y);
+
+floating_point erf (arithmetic x);
+float          erff(float x);
+long double    erfl(long double x);
+
+floating_point erfc (arithmetic x);
+float          erfcf(float x);
+long double    erfcl(long double x);
+
+floating_point exp2 (arithmetic x);
+float          exp2f(float x);
+long double    exp2l(long double x);
+
+floating_point expm1 (arithmetic x);
+float          expm1f(float x);
+long double    expm1l(long double x);
+
+floating_point fdim (arithmetic x, arithmetic y);
+float          fdimf(float x, float y);
+long double    fdiml(long double x, long double y);
+
+floating_point fma (arithmetic x, arithmetic y, arithmetic z);
+float          fmaf(float x, float y, float z);
+long double    fmal(long double x, long double y, long double z);
+
+floating_point fmax (arithmetic x, arithmetic y);
+float          fmaxf(float x, float y);
+long double    fmaxl(long double x, long double y);
+
+floating_point fmin (arithmetic x, arithmetic y);
+float          fminf(float x, float y);
+long double    fminl(long double x, long double y);
+
+floating_point hypot (arithmetic x, arithmetic y);
+float          hypotf(float x, float y);
+long double    hypotl(long double x, long double y);
+
+int ilogb (arithmetic x);
+int ilogbf(float x);
+int ilogbl(long double x);
+
+floating_point lgamma (arithmetic x);
+float          lgammaf(float x);
+long double    lgammal(long double x);
+
+long long llrint (arithmetic x);
+long long llrintf(float x);
+long long llrintl(long double x);
+
+long long llround (arithmetic x);
+long long llroundf(float x);
+long long llroundl(long double x);
+
+floating_point log1p (arithmetic x);
+float          log1pf(float x);
+long double    log1pl(long double x);
+
+floating_point log2 (arithmetic x);
+float          log2f(float x);
+long double    log2l(long double x);
+
+floating_point logb (arithmetic x);
+float          logbf(float x);
+long double    logbl(long double x);
+
+long lrint (arithmetic x);
+long lrintf(float x);
+long lrintl(long double x);
+
+long lround (arithmetic x);
+long lroundf(float x);
+long lroundl(long double x);
+
+double      nan (const char* str);
+float       nanf(const char* str);
+long double nanl(const char* str);
+
+floating_point nearbyint (arithmetic x);
+float          nearbyintf(float x);
+long double    nearbyintl(long double x);
+
+floating_point nextafter (arithmetic x, arithmetic y);
+float          nextafterf(float x, float y);
+long double    nextafterl(long double x, long double y);
+
+floating_point nexttoward (arithmetic x, long double y);
+float          nexttowardf(float x, long double y);
+long double    nexttowardl(long double x, long double y);
+
+floating_point remainder (arithmetic x, arithmetic y);
+float          remainderf(float x, float y);
+long double    remainderl(long double x, long double y);
+
+floating_point remquo (arithmetic x, arithmetic y, int* pquo);
+float          remquof(float x, float y, int* pquo);
+long double    remquol(long double x, long double y, int* pquo);
+
+floating_point rint (arithmetic x);
+float          rintf(float x);
+long double    rintl(long double x);
+
+floating_point round (arithmetic x);
+float          roundf(float x);
+long double    roundl(long double x);
+
+floating_point scalbln (arithmetic x, long ex);
+float          scalblnf(float x, long ex);
+long double    scalblnl(long double x, long ex);
+
+floating_point scalbn (arithmetic x, int ex);
+float          scalbnf(float x, int ex);
+long double    scalbnl(long double x, int ex);
+
+floating_point tgamma (arithmetic x);
+float          tgammaf(float x);
+long double    tgammal(long double x);
+
+floating_point trunc (arithmetic x);
+float          truncf(float x);
+long double    truncl(long double x);
+
+}  // std
+
+*/
+
+#include <__config>
+#include <math.h>
+#include <type_traits>
+
+#ifdef _LIBCPP_MSVCRT
+#include "support/win32/math_win32.h"
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+// signbit
+
+#ifdef signbit
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_signbit(_A1 __x) _NOEXCEPT
+{
+    return signbit(__x);
+}
+
+#undef signbit
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
+signbit(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_signbit((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // signbit
+
+// fpclassify
+
+#ifdef fpclassify
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+int
+__libcpp_fpclassify(_A1 __x) _NOEXCEPT
+{
+    return fpclassify(__x);
+}
+
+#undef fpclassify
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, int>::type
+fpclassify(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_fpclassify((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // fpclassify
+
+// isfinite
+
+#ifdef isfinite
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isfinite(_A1 __x) _NOEXCEPT
+{
+    return isfinite(__x);
+}
+
+#undef isfinite
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
+isfinite(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_isfinite((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // isfinite
+
+// isinf
+
+#ifdef isinf
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isinf(_A1 __x) _NOEXCEPT
+{
+    return isinf(__x);
+}
+
+#undef isinf
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
+isinf(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_isinf((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // isinf
+
+// isnan
+
+#ifdef isnan
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isnan(_A1 __x) _NOEXCEPT
+{
+    return isnan(__x);
+}
+
+#undef isnan
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
+isnan(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_isnan((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // isnan
+
+// isnormal
+
+#ifdef isnormal
+
+template <class _A1>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isnormal(_A1 __x) _NOEXCEPT
+{
+    return isnormal(__x);
+}
+
+#undef isnormal
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
+isnormal(_A1 __x) _NOEXCEPT
+{
+    return __libcpp_isnormal((typename std::__promote<_A1>::type)__x);
+}
+
+#endif  // isnormal
+
+// isgreater
+
+#ifdef isgreater
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isgreater(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return isgreater(__x, __y);
+}
+
+#undef isgreater
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+isgreater(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_isgreater((type)__x, (type)__y);
+}
+
+#endif  // isgreater
+
+// isgreaterequal
+
+#ifdef isgreaterequal
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isgreaterequal(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return isgreaterequal(__x, __y);
+}
+
+#undef isgreaterequal
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+isgreaterequal(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_isgreaterequal((type)__x, (type)__y);
+}
+
+#endif  // isgreaterequal
+
+// isless
+
+#ifdef isless
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isless(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return isless(__x, __y);
+}
+
+#undef isless
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+isless(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_isless((type)__x, (type)__y);
+}
+
+#endif  // isless
+
+// islessequal
+
+#ifdef islessequal
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_islessequal(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return islessequal(__x, __y);
+}
+
+#undef islessequal
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+islessequal(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_islessequal((type)__x, (type)__y);
+}
+
+#endif  // islessequal
+
+// islessgreater
+
+#ifdef islessgreater
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_islessgreater(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return islessgreater(__x, __y);
+}
+
+#undef islessgreater
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+islessgreater(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_islessgreater((type)__x, (type)__y);
+}
+
+#endif  // islessgreater
+
+// isunordered
+
+#ifdef isunordered
+
+template <class _A1, class _A2>
+_LIBCPP_ALWAYS_INLINE
+bool
+__libcpp_isunordered(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    return isunordered(__x, __y);
+}
+
+#undef isunordered
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename std::enable_if
+<
+    std::is_arithmetic<_A1>::value &&
+    std::is_arithmetic<_A2>::value,
+    bool
+>::type
+isunordered(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename std::__promote<_A1, _A2>::type type;
+    return __libcpp_isunordered((type)__x, (type)__y);
+}
+
+#endif  // isunordered
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+using ::signbit;
+using ::fpclassify;
+using ::isfinite;
+using ::isinf;
+using ::isnan;
+using ::isnormal;
+using ::isgreater;
+using ::isgreaterequal;
+using ::isless;
+using ::islessequal;
+using ::islessgreater;
+using ::isunordered;
+using ::isunordered;
+
+using ::float_t;
+using ::double_t;
+
+// abs
+
+#if !defined(_AIX)
+inline _LIBCPP_INLINE_VISIBILITY
+float
+abs(float __x) _NOEXCEPT {return fabsf(__x);}
+
+inline _LIBCPP_INLINE_VISIBILITY
+double
+abs(double __x) _NOEXCEPT {return fabs(__x);}
+
+inline _LIBCPP_INLINE_VISIBILITY
+long double
+abs(long double __x) _NOEXCEPT {return fabsl(__x);}
+#endif // !defined(_AIX)
+
+#ifndef __sun__
+
+// acos
+
+using ::acos;
+using ::acosf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       acos(float __x) _NOEXCEPT       {return acosf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double acos(long double __x) _NOEXCEPT {return acosl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+acos(_A1 __x) _NOEXCEPT {return acos((double)__x);}
+
+// asin
+
+using ::asin;
+using ::asinf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       asin(float __x) _NOEXCEPT       {return asinf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double asin(long double __x) _NOEXCEPT {return asinl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+asin(_A1 __x) _NOEXCEPT {return asin((double)__x);}
+
+// atan
+
+using ::atan;
+using ::atanf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       atan(float __x) _NOEXCEPT       {return atanf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double atan(long double __x) _NOEXCEPT {return atanl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+atan(_A1 __x) _NOEXCEPT {return atan((double)__x);}
+
+// atan2
+
+using ::atan2;
+using ::atan2f;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       atan2(float __y, float __x) _NOEXCEPT             {return atan2f(__y, __x);}
+inline _LIBCPP_INLINE_VISIBILITY long double atan2(long double __y, long double __x) _NOEXCEPT {return atan2l(__y, __x);}
+#endif
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+atan2(_A1 __y, _A2 __x) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return atan2((__result_type)__y, (__result_type)__x);
+}
+
+// ceil
+
+using ::ceil;
+using ::ceilf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       ceil(float __x) _NOEXCEPT       {return ceilf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double ceil(long double __x) _NOEXCEPT {return ceill(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+ceil(_A1 __x) _NOEXCEPT {return ceil((double)__x);}
+
+// cos
+
+using ::cos;
+using ::cosf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       cos(float __x) _NOEXCEPT       {return cosf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double cos(long double __x) _NOEXCEPT {return cosl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+cos(_A1 __x) _NOEXCEPT {return cos((double)__x);}
+
+// cosh
+
+using ::cosh;
+using ::coshf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       cosh(float __x) _NOEXCEPT       {return coshf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double cosh(long double __x) _NOEXCEPT {return coshl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+cosh(_A1 __x) _NOEXCEPT {return cosh((double)__x);}
+
+#endif // __sun__
+// exp
+
+using ::exp;
+using ::expf;
+
+#ifndef __sun__
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       exp(float __x) _NOEXCEPT       {return expf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double exp(long double __x) _NOEXCEPT {return expl(__x);}
+#endif
+
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+exp(_A1 __x) _NOEXCEPT {return exp((double)__x);}
+
+// fabs
+
+using ::fabs;
+using ::fabsf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       fabs(float __x) _NOEXCEPT       {return fabsf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double fabs(long double __x) _NOEXCEPT {return fabsl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+fabs(_A1 __x) _NOEXCEPT {return fabs((double)__x);}
+
+// floor
+
+using ::floor;
+using ::floorf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       floor(float __x) _NOEXCEPT       {return floorf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double floor(long double __x) _NOEXCEPT {return floorl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+floor(_A1 __x) _NOEXCEPT {return floor((double)__x);}
+
+// fmod
+
+#endif //__sun__
+using ::fmod;
+using ::fmodf;
+#ifndef __sun__
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       fmod(float __x, float __y) _NOEXCEPT             {return fmodf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double fmod(long double __x, long double __y) _NOEXCEPT {return fmodl(__x, __y);}
+#endif
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+fmod(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return fmod((__result_type)__x, (__result_type)__y);
+}
+
+
+// frexp
+
+using ::frexp;
+using ::frexpf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       frexp(float __x, int* __e) _NOEXCEPT       {return frexpf(__x, __e);}
+inline _LIBCPP_INLINE_VISIBILITY long double frexp(long double __x, int* __e) _NOEXCEPT {return frexpl(__x, __e);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+frexp(_A1 __x, int* __e) _NOEXCEPT {return frexp((double)__x, __e);}
+
+// ldexp
+
+using ::ldexp;
+using ::ldexpf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       ldexp(float __x, int __e) _NOEXCEPT       {return ldexpf(__x, __e);}
+inline _LIBCPP_INLINE_VISIBILITY long double ldexp(long double __x, int __e) _NOEXCEPT {return ldexpl(__x, __e);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+ldexp(_A1 __x, int __e) _NOEXCEPT {return ldexp((double)__x, __e);}
+
+// log
+
+#endif // __sun__
+using ::log;
+using ::logf;
+#ifndef __sun__
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       log(float __x) _NOEXCEPT       {return logf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double log(long double __x) _NOEXCEPT {return logl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+log(_A1 __x) _NOEXCEPT {return log((double)__x);}
+
+
+// log10
+
+using ::log10;
+using ::log10f;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       log10(float __x) _NOEXCEPT       {return log10f(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double log10(long double __x) _NOEXCEPT {return log10l(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+log10(_A1 __x) _NOEXCEPT {return log10((double)__x);}
+
+// modf
+
+using ::modf;
+using ::modff;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       modf(float __x, float* __y) _NOEXCEPT             {return modff(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double modf(long double __x, long double* __y) _NOEXCEPT {return modfl(__x, __y);}
+#endif
+
+// pow
+
+#endif // __sun__ 
+using ::pow;
+using ::powf;
+
+#ifndef __sun__
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       pow(float __x, float __y) _NOEXCEPT             {return powf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double pow(long double __x, long double __y) _NOEXCEPT {return powl(__x, __y);}
+#endif
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+pow(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return pow((__result_type)__x, (__result_type)__y);
+}
+
+
+// sin
+
+using ::sin;
+using ::sinf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       sin(float __x) _NOEXCEPT       {return sinf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double sin(long double __x) _NOEXCEPT {return sinl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+sin(_A1 __x) _NOEXCEPT {return sin((double)__x);}
+
+// sinh
+
+using ::sinh;
+using ::sinhf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       sinh(float __x) _NOEXCEPT       {return sinhf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double sinh(long double __x) _NOEXCEPT {return sinhl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+sinh(_A1 __x) _NOEXCEPT {return sinh((double)__x);}
+
+// sqrt
+
+#endif // __sun__
+using ::sqrt;
+using ::sqrtf;
+
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(__sun__) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       sqrt(float __x) _NOEXCEPT       {return sqrtf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double sqrt(long double __x) _NOEXCEPT {return sqrtl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+sqrt(_A1 __x) _NOEXCEPT {return sqrt((double)__x);}
+
+// tan
+
+using ::tan;
+using ::tanf;
+#ifndef __sun__
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       tan(float __x) _NOEXCEPT       {return tanf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double tan(long double __x) _NOEXCEPT {return tanl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+tan(_A1 __x) _NOEXCEPT {return tan((double)__x);}
+
+// tanh
+
+using ::tanh;
+using ::tanhf;
+
+#if !(defined(_LIBCPP_MSVCRT) || defined(_AIX))
+inline _LIBCPP_INLINE_VISIBILITY float       tanh(float __x) _NOEXCEPT       {return tanhf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double tanh(long double __x) _NOEXCEPT {return tanhl(__x);}
+#endif
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+tanh(_A1 __x) _NOEXCEPT {return tanh((double)__x);}
+
+// acosh
+
+#ifndef _LIBCPP_MSVCRT
+using ::acosh;
+using ::acoshf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       acosh(float __x) _NOEXCEPT       {return acoshf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double acosh(long double __x) _NOEXCEPT {return acoshl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+acosh(_A1 __x) _NOEXCEPT {return acosh((double)__x);}
+#endif
+
+// asinh
+
+#ifndef _LIBCPP_MSVCRT
+using ::asinh;
+using ::asinhf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       asinh(float __x) _NOEXCEPT       {return asinhf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double asinh(long double __x) _NOEXCEPT {return asinhl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+asinh(_A1 __x) _NOEXCEPT {return asinh((double)__x);}
+#endif
+
+// atanh
+
+#ifndef _LIBCPP_MSVCRT
+using ::atanh;
+using ::atanhf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       atanh(float __x) _NOEXCEPT       {return atanhf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double atanh(long double __x) _NOEXCEPT {return atanhl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+atanh(_A1 __x) _NOEXCEPT {return atanh((double)__x);}
+#endif
+
+// cbrt
+
+#ifndef _LIBCPP_MSVCRT
+using ::cbrt;
+using ::cbrtf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       cbrt(float __x) _NOEXCEPT       {return cbrtf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double cbrt(long double __x) _NOEXCEPT {return cbrtl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+cbrt(_A1 __x) _NOEXCEPT {return cbrt((double)__x);}
+#endif
+
+// copysign
+
+using ::copysign;
+using ::copysignf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       copysign(float __x, float __y) _NOEXCEPT             {return copysignf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double copysign(long double __x, long double __y) _NOEXCEPT {return copysignl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+copysign(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return copysign((__result_type)__x, (__result_type)__y);
+}
+
+#ifndef _LIBCPP_MSVCRT
+
+// erf
+
+using ::erf;
+using ::erff;
+
+inline _LIBCPP_INLINE_VISIBILITY float       erf(float __x) _NOEXCEPT       {return erff(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double erf(long double __x) _NOEXCEPT {return erfl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+erf(_A1 __x) _NOEXCEPT {return erf((double)__x);}
+
+// erfc
+
+using ::erfc;
+using ::erfcf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       erfc(float __x) _NOEXCEPT       {return erfcf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double erfc(long double __x) _NOEXCEPT {return erfcl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+erfc(_A1 __x) _NOEXCEPT {return erfc((double)__x);}
+
+// exp2
+
+using ::exp2;
+using ::exp2f;
+
+inline _LIBCPP_INLINE_VISIBILITY float       exp2(float __x) _NOEXCEPT       {return exp2f(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double exp2(long double __x) _NOEXCEPT {return exp2l(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+exp2(_A1 __x) _NOEXCEPT {return exp2((double)__x);}
+
+// expm1
+
+using ::expm1;
+using ::expm1f;
+
+inline _LIBCPP_INLINE_VISIBILITY float       expm1(float __x) _NOEXCEPT       {return expm1f(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double expm1(long double __x) _NOEXCEPT {return expm1l(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+expm1(_A1 __x) _NOEXCEPT {return expm1((double)__x);}
+
+// fdim
+
+using ::fdim;
+using ::fdimf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       fdim(float __x, float __y) _NOEXCEPT             {return fdimf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double fdim(long double __x, long double __y) _NOEXCEPT {return fdiml(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+fdim(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return fdim((__result_type)__x, (__result_type)__y);
+}
+
+// fma
+
+inline _LIBCPP_INLINE_VISIBILITY float fmaf(float __x, float __y, float __z) _NOEXCEPT {return (float)((double)__x*__y + __z);}
+#ifndef FP_FAST_FMAF
+#define FP_FAST_FMAF
+#endif
+
+using ::fma;
+
+inline _LIBCPP_INLINE_VISIBILITY float       fma(float __x, float __y, float __z) _NOEXCEPT                   {return fmaf(__x, __y, __z);}
+inline _LIBCPP_INLINE_VISIBILITY long double fma(long double __x, long double __y, long double __z) _NOEXCEPT {return fmal(__x, __y, __z);}
+
+template <class _A1, class _A2, class _A3>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value &&
+    is_arithmetic<_A3>::value,
+    typename __promote<_A1, _A2, _A3>::type
+>::type
+fma(_A1 __x, _A2 __y, _A3 __z) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2, _A3>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value &&
+                      is_same<_A3, __result_type>::value)), "");
+    return fma((__result_type)__x, (__result_type)__y, (__result_type)__z);
+}
+
+// fmax
+
+using ::fmax;
+using ::fmaxf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       fmax(float __x, float __y) _NOEXCEPT             {return fmaxf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double fmax(long double __x, long double __y) _NOEXCEPT {return fmaxl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+fmax(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return fmax((__result_type)__x, (__result_type)__y);
+}
+
+// fmin
+
+using ::fmin;
+using ::fminf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       fmin(float __x, float __y) _NOEXCEPT             {return fminf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double fmin(long double __x, long double __y) _NOEXCEPT {return fminl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+fmin(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return fmin((__result_type)__x, (__result_type)__y);
+}
+
+// hypot
+
+using ::hypot;
+using ::hypotf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       hypot(float __x, float __y) _NOEXCEPT             {return hypotf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double hypot(long double __x, long double __y) _NOEXCEPT {return hypotl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+hypot(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return hypot((__result_type)__x, (__result_type)__y);
+}
+
+// ilogb
+
+using ::ilogb;
+using ::ilogbf;
+
+inline _LIBCPP_INLINE_VISIBILITY int ilogb(float __x) _NOEXCEPT       {return ilogbf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY int ilogb(long double __x) _NOEXCEPT {return ilogbl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, int>::type
+ilogb(_A1 __x) _NOEXCEPT {return ilogb((double)__x);}
+
+// lgamma
+
+using ::lgamma;
+using ::lgammaf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       lgamma(float __x) _NOEXCEPT       {return lgammaf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double lgamma(long double __x) _NOEXCEPT {return lgammal(__x);}
+
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+lgamma(_A1 __x) _NOEXCEPT {return lgamma((double)__x);}
+
+
+// llrint
+
+using ::llrint;
+using ::llrintf;
+
+inline _LIBCPP_INLINE_VISIBILITY long long llrint(float __x) _NOEXCEPT       {return llrintf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long long llrint(long double __x) _NOEXCEPT {return llrintl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, long long>::type
+llrint(_A1 __x) _NOEXCEPT {return llrint((double)__x);}
+
+// llround
+
+using ::llround;
+using ::llroundf;
+
+inline _LIBCPP_INLINE_VISIBILITY long long llround(float __x) _NOEXCEPT       {return llroundf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long long llround(long double __x) _NOEXCEPT {return llroundl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, long long>::type
+llround(_A1 __x) _NOEXCEPT {return llround((double)__x);}
+
+// log1p
+
+using ::log1p;
+using ::log1pf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       log1p(float __x) _NOEXCEPT       {return log1pf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double log1p(long double __x) _NOEXCEPT {return log1pl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+log1p(_A1 __x) _NOEXCEPT {return log1p((double)__x);}
+
+// log2
+
+using ::log2;
+using ::log2f;
+
+inline _LIBCPP_INLINE_VISIBILITY float       log2(float __x) _NOEXCEPT       {return log2f(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double log2(long double __x) _NOEXCEPT {return log2l(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+log2(_A1 __x) _NOEXCEPT {return log2((double)__x);}
+
+// logb
+
+using ::logb;
+using ::logbf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       logb(float __x) _NOEXCEPT       {return logbf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double logb(long double __x) _NOEXCEPT {return logbl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+logb(_A1 __x) _NOEXCEPT {return logb((double)__x);}
+
+// lrint
+
+using ::lrint;
+using ::lrintf;
+
+inline _LIBCPP_INLINE_VISIBILITY long lrint(float __x) _NOEXCEPT       {return lrintf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long lrint(long double __x) _NOEXCEPT {return lrintl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, long>::type
+lrint(_A1 __x) _NOEXCEPT {return lrint((double)__x);}
+
+// lround
+
+using ::lround;
+using ::lroundf;
+
+inline _LIBCPP_INLINE_VISIBILITY long lround(float __x) _NOEXCEPT       {return lroundf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long lround(long double __x) _NOEXCEPT {return lroundl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, long>::type
+lround(_A1 __x) _NOEXCEPT {return lround((double)__x);}
+
+#endif // _LIBCPP_MSVCRT
+#endif // __sun__
+
+// nan
+
+#ifndef _LIBCPP_MSVCRT
+using ::nan;
+using ::nanf;
+#endif // _LIBCPP_MSVCRT
+
+#ifndef __sun__
+#ifndef _LIBCPP_MSVCRT
+
+// nearbyint
+
+using ::nearbyint;
+using ::nearbyintf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       nearbyint(float __x) _NOEXCEPT       {return nearbyintf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double nearbyint(long double __x) _NOEXCEPT {return nearbyintl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+nearbyint(_A1 __x) _NOEXCEPT {return nearbyint((double)__x);}
+
+// nextafter
+
+using ::nextafter;
+using ::nextafterf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       nextafter(float __x, float __y) _NOEXCEPT             {return nextafterf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double nextafter(long double __x, long double __y) _NOEXCEPT {return nextafterl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+nextafter(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return nextafter((__result_type)__x, (__result_type)__y);
+}
+
+// nexttoward
+
+using ::nexttoward;
+using ::nexttowardf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       nexttoward(float __x, long double __y) _NOEXCEPT       {return nexttowardf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double nexttoward(long double __x, long double __y) _NOEXCEPT {return nexttowardl(__x, __y);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+nexttoward(_A1 __x, long double __y) _NOEXCEPT {return nexttoward((double)__x, __y);}
+
+// remainder
+
+using ::remainder;
+using ::remainderf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       remainder(float __x, float __y) _NOEXCEPT             {return remainderf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double remainder(long double __x, long double __y) _NOEXCEPT {return remainderl(__x, __y);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+remainder(_A1 __x, _A2 __y) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return remainder((__result_type)__x, (__result_type)__y);
+}
+
+// remquo
+
+using ::remquo;
+using ::remquof;
+
+inline _LIBCPP_INLINE_VISIBILITY float       remquo(float __x, float __y, int* __z) _NOEXCEPT             {return remquof(__x, __y, __z);}
+inline _LIBCPP_INLINE_VISIBILITY long double remquo(long double __x, long double __y, int* __z) _NOEXCEPT {return remquol(__x, __y, __z);}
+
+template <class _A1, class _A2>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_arithmetic<_A1>::value &&
+    is_arithmetic<_A2>::value,
+    typename __promote<_A1, _A2>::type
+>::type
+remquo(_A1 __x, _A2 __y, int* __z) _NOEXCEPT
+{
+    typedef typename __promote<_A1, _A2>::type __result_type;
+    static_assert((!(is_same<_A1, __result_type>::value &&
+                      is_same<_A2, __result_type>::value)), "");
+    return remquo((__result_type)__x, (__result_type)__y, __z);
+}
+
+// rint
+
+using ::rint;
+using ::rintf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       rint(float __x) _NOEXCEPT       {return rintf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double rint(long double __x) _NOEXCEPT {return rintl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+rint(_A1 __x) _NOEXCEPT {return rint((double)__x);}
+
+// round
+
+using ::round;
+using ::roundf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       round(float __x) _NOEXCEPT       {return roundf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double round(long double __x) _NOEXCEPT {return roundl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+round(_A1 __x) _NOEXCEPT {return round((double)__x);}
+
+// scalbln
+
+using ::scalbln;
+using ::scalblnf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       scalbln(float __x, long __y) _NOEXCEPT       {return scalblnf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double scalbln(long double __x, long __y) _NOEXCEPT {return scalblnl(__x, __y);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+scalbln(_A1 __x, long __y) _NOEXCEPT {return scalbln((double)__x, __y);}
+
+// scalbn
+
+using ::scalbn;
+using ::scalbnf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       scalbn(float __x, int __y) _NOEXCEPT       {return scalbnf(__x, __y);}
+inline _LIBCPP_INLINE_VISIBILITY long double scalbn(long double __x, int __y) _NOEXCEPT {return scalbnl(__x, __y);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+scalbn(_A1 __x, int __y) _NOEXCEPT {return scalbn((double)__x, __y);}
+
+// tgamma
+
+using ::tgamma;
+using ::tgammaf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       tgamma(float __x) _NOEXCEPT       {return tgammaf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double tgamma(long double __x) _NOEXCEPT {return tgammal(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+tgamma(_A1 __x) _NOEXCEPT {return tgamma((double)__x);}
+
+// trunc
+
+using ::trunc;
+using ::truncf;
+
+inline _LIBCPP_INLINE_VISIBILITY float       trunc(float __x) _NOEXCEPT       {return truncf(__x);}
+inline _LIBCPP_INLINE_VISIBILITY long double trunc(long double __x) _NOEXCEPT {return truncl(__x);}
+
+template <class _A1>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_integral<_A1>::value, double>::type
+trunc(_A1 __x) _NOEXCEPT {return trunc((double)__x);}
+
+#endif // !_LIBCPP_MSVCRT
+
+using ::acosl;
+using ::asinl;
+using ::atanl;
+using ::atan2l;
+using ::ceill;
+using ::cosl;
+using ::coshl;
+using ::expl;
+using ::fabsl;
+using ::floorl;
+using ::fmodl;
+using ::frexpl;
+using ::ldexpl;
+using ::logl;
+using ::log10l;
+using ::modfl;
+using ::powl;
+using ::sinl;
+using ::sinhl;
+using ::sqrtl;
+using ::tanl;
+#ifndef _LIBCPP_MSVCRT
+using ::tanhl;
+using ::acoshl;
+using ::asinhl;
+using ::atanhl;
+using ::cbrtl;
+#endif  // !_LIBCPP_MSVCRT
+using ::copysignl;
+#ifndef _LIBCPP_MSVCRT
+using ::erfl;
+using ::erfcl;
+using ::exp2l;
+using ::expm1l;
+using ::fdiml;
+using ::fmal;
+using ::fmaxl;
+using ::fminl;
+using ::hypotl;
+using ::ilogbl;
+using ::lgammal;
+using ::llrintl;
+using ::llroundl;
+using ::log1pl;
+using ::log2l;
+using ::logbl;
+using ::lrintl;
+using ::lroundl;
+using ::nanl;
+using ::nearbyintl;
+using ::nextafterl;
+using ::nexttowardl;
+using ::remainderl;
+using ::remquol;
+using ::rintl;
+using ::roundl;
+using ::scalblnl;
+using ::scalbnl;
+using ::tgammal;
+using ::truncl;
+#endif // !_LIBCPP_MSVCRT
+
+#else 
+using ::lgamma;
+using ::lgammaf;
+#endif // __sun__
+_LIBCPP_END_NAMESPACE_STD
+
+#endif  // _LIBCPP_CMATH