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fix: math functions (support for inferior C++14 standard)

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add C++14 constexpr modifying algorithms
This commit is contained in:
bolero-MURAKAMI 2013-10-25 12:29:16 +09:00
parent 58cff54e0d
commit c58c9cc0fc
106 changed files with 3465 additions and 2144 deletions
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49
sprout/math/fpclassify.hpp
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@ -21,22 +21,45 @@
namespace sprout {
namespace math {
namespace detail {
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
template<typename FloatType>
inline SPROUT_CONSTEXPR int
fpclassify(FloatType x) {
return sprout::math::isnan(x) ? FP_NAN
: sprout::math::isinf(x) ? FP_INFINITE
: sprout::math::iszero(x) ? FP_ZERO
: sprout::math::detail::issubnormal_or_zero(x) ? FP_SUBNORMAL
: FP_NORMAL
;
builtin_fpclassify(FloatType x) {
return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x);
}
#endif
} // namespace detail
using NS_SPROUT_MATH_DETAIL::fpclassify;
//
// fpclassify
//
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR int
fpclassify(FloatType x) {
return
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
sprout::math::detail::builtin_fpclassify(x)
#else
sprout::math::isnan(x) ? FP_NAN
: sprout::math::isinf(x) ? FP_INFINITE
: sprout::math::iszero(x) ? FP_ZERO
: sprout::math::detail::issubnormal_or_zero(x) ? FP_SUBNORMAL
: FP_NORMAL
#endif
;
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR int
fpclassify(IntType x) {
return x ? FP_NORMAL
: FP_ZERO
;
}
} // namespace math
using sprout::math::fpclassify;