mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
277 lines
9.3 KiB
C++
277 lines
9.3 KiB
C++
#ifndef SPROUT_LIMITS_HPP
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#define SPROUT_LIMITS_HPP
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#include <cstdint>
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#include <climits>
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#include <cfloat>
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#include <limits>
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#include <sprout/config.hpp>
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namespace sprout {
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//
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// numeric_limits
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//
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#ifdef SPROUT_NO_CXX11_NUMERIC_LIMITS
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namespace detail {
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template<typename T>
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class numeric_limits_base {
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private:
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typedef std::numeric_limits<T> impl_type;
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public:
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static SPROUT_CONSTEXPR bool is_specialized = impl_type::is_specialized;
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static SPROUT_CONSTEXPR int digits = impl_type::digits;
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static SPROUT_CONSTEXPR int digits10 = impl_type::digits10;
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static SPROUT_CONSTEXPR int max_digits10 = impl_type::max_digits10;
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static SPROUT_CONSTEXPR bool is_signed = impl_type::is_signed;
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static SPROUT_CONSTEXPR bool is_integer = impl_type::is_integer;
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static SPROUT_CONSTEXPR bool is_exact = impl_type::is_exact;
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static SPROUT_CONSTEXPR int radix = impl_type::radix;
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static SPROUT_CONSTEXPR int min_exponent = impl_type::min_exponent;
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static SPROUT_CONSTEXPR int min_exponent10 = impl_type::min_exponent10;
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static SPROUT_CONSTEXPR int max_exponent = impl_type::max_exponent;
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static SPROUT_CONSTEXPR int max_exponent10 = impl_type::max_exponent10;
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static SPROUT_CONSTEXPR bool has_infinity = impl_type::has_infinity;
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static SPROUT_CONSTEXPR bool has_quiet_NaN = impl_type::has_quiet_NaN;
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static SPROUT_CONSTEXPR bool has_signaling_NaN = impl_type::has_signaling_NaN;
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static SPROUT_CONSTEXPR std::float_denorm_style has_denorm = impl_type::has_denorm;
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static SPROUT_CONSTEXPR bool has_denorm_loss = impl_type::has_denorm_loss;
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static SPROUT_CONSTEXPR bool is_iec559 = impl_type::is_iec559;
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static SPROUT_CONSTEXPR bool is_bounded = impl_type::is_bounded;
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static SPROUT_CONSTEXPR bool is_modulo = impl_type::is_modulo;
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static SPROUT_CONSTEXPR bool traps = impl_type::traps;
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static SPROUT_CONSTEXPR bool tinyness_before = impl_type::tinyness_before;
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static SPROUT_CONSTEXPR std::float_round_style round_style = impl_type::round_style;
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};
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template<typename T, bool IsInitialized>
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class numeric_limits_impl;
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template<typename T>
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class numeric_limits_impl<T, true>
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: public sprout::detail::numeric_limits_base<T>
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{
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private:
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typedef std::numeric_limits<T> impl_type;
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public:
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static SPROUT_CONSTEXPR T min() SPROUT_NOEXCEPT {
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return impl_type::min();
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}
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static SPROUT_CONSTEXPR T max() SPROUT_NOEXCEPT {
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return impl_type::max();
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}
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static SPROUT_CONSTEXPR T lowest() SPROUT_NOEXCEPT {
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return impl_type::lowest();
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}
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static SPROUT_CONSTEXPR T epsilon() SPROUT_NOEXCEPT {
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return impl_type::epsilon();
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}
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static SPROUT_CONSTEXPR T round_error() SPROUT_NOEXCEPT {
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return impl_type::round_error();
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}
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static SPROUT_CONSTEXPR T infinity() SPROUT_NOEXCEPT {
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return impl_type::infinity();
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}
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static SPROUT_CONSTEXPR T quiet_NaN() SPROUT_NOEXCEPT {
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return impl_type::quiet_NaN();
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}
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static SPROUT_CONSTEXPR T signaling_NaN() SPROUT_NOEXCEPT {
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return impl_type::signaling_NaN();
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}
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static SPROUT_CONSTEXPR T denorm_min() SPROUT_NOEXCEPT {
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return impl_type::denorm_min();
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}
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};
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template<typename T>
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class numeric_limits_impl<T, false>
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: public sprout::detail::numeric_limits_base<T>
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{
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public:
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static SPROUT_CONSTEXPR T min() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T max() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T lowest() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T epsilon() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T round_error() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T infinity() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T quiet_NaN() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T signaling_NaN() SPROUT_NOEXCEPT {
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return T();
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}
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static SPROUT_CONSTEXPR T denorm_min() SPROUT_NOEXCEPT {
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return T();
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}
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};
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} // namespace detail
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template<typename T>
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class numeric_limits
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: public sprout::detail::numeric_limits_impl<T, std::numeric_limits<T>::is_specialized>
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{};
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template<typename T>
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class numeric_limits<T const>
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: public sprout::numeric_limits<T>
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{};
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template<typename T>
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class numeric_limits<T volatile>
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: public sprout::numeric_limits<T>
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{};
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template<typename T>
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class numeric_limits<T const volatile>
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: public sprout::numeric_limits<T>
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{};
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#define SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(TYPE, MIN, MAX) \
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template<> \
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class numeric_limits<TYPE> \
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: public sprout::detail::numeric_limits_base<TYPE> \
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{ \
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public: \
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static SPROUT_CONSTEXPR TYPE min() SPROUT_NOEXCEPT { \
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return MIN; \
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} \
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static SPROUT_CONSTEXPR TYPE max() SPROUT_NOEXCEPT { \
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return MAX; \
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} \
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static SPROUT_CONSTEXPR TYPE lowest() SPROUT_NOEXCEPT { \
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return min(); \
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} \
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\
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static SPROUT_CONSTEXPR TYPE epsilon() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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static SPROUT_CONSTEXPR TYPE round_error() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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\
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static SPROUT_CONSTEXPR TYPE infinity() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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static SPROUT_CONSTEXPR TYPE quiet_NaN() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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static SPROUT_CONSTEXPR TYPE signaling_NaN() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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static SPROUT_CONSTEXPR TYPE denorm_min() SPROUT_NOEXCEPT { \
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return static_cast<TYPE>(0); \
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} \
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}
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(bool, false, true);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(short, SHRT_MIN, SHRT_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(int, INT_MIN, INT_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(long, LONG_MIN, LONG_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(long long, LLONG_MIN, LLONG_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(unsigned short, static_cast<unsigned short>(0), USHRT_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(unsigned int, static_cast<unsigned int>(0), UINT_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(unsigned long, static_cast<unsigned long>(0), ULONG_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(unsigned long long, static_cast<unsigned long long>(0), ULLONG_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(signed char, SCHAR_MIN, SCHAR_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(unsigned char, static_cast<unsigned char>(0), UCHAR_MAX);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(
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char16_t,
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static_cast<char16_t>(sprout::numeric_limits<std::uint_least16_t>::min()),
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static_cast<char16_t>(sprout::numeric_limits<std::uint_least16_t>::max())
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);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(
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char32_t,
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static_cast<char16_t>(sprout::numeric_limits<std::uint_least32_t>::min()),
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static_cast<char16_t>(sprout::numeric_limits<std::uint_least32_t>::max())
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);
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SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL(wchar_t, WCHAR_MIN, WCHAR_MAX);
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#undef SPROUT_NUMERIC_LIMITS_INTEGRAL_SPECIALIZED_DECL
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#define SPROUT_NUMERIC_LIMITS_FLOATING_POINT_SPECIALIZED_DECL(TYPE, MIN, MAX, EPS, RND, INF, QNAN, SNAN, DMIN) \
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template<> \
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class numeric_limits<TYPE> \
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: public sprout::detail::numeric_limits_base<TYPE> \
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{ \
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public: \
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static SPROUT_CONSTEXPR TYPE min() SPROUT_NOEXCEPT { \
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return MIN; \
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} \
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static SPROUT_CONSTEXPR TYPE max() SPROUT_NOEXCEPT { \
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return MAX; \
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} \
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static SPROUT_CONSTEXPR TYPE lowest() SPROUT_NOEXCEPT { \
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return -max(); \
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} \
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\
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static SPROUT_CONSTEXPR TYPE epsilon() SPROUT_NOEXCEPT { \
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return EPS; \
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} \
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static SPROUT_CONSTEXPR TYPE round_error() SPROUT_NOEXCEPT { \
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return RND; \
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} \
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\
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static SPROUT_CONSTEXPR TYPE infinity() SPROUT_NOEXCEPT { \
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return INF; \
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} \
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static SPROUT_CONSTEXPR TYPE quiet_NaN() SPROUT_NOEXCEPT { \
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return QNAN; \
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} \
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static SPROUT_CONSTEXPR TYPE signaling_NaN() SPROUT_NOEXCEPT { \
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return SNAN; \
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} \
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static SPROUT_CONSTEXPR TYPE denorm_min() SPROUT_NOEXCEPT { \
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return DMIN; \
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} \
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}
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SPROUT_NUMERIC_LIMITS_FLOATING_POINT_SPECIALIZED_DECL(
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float,
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FLT_MIN, FLT_MAX,
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FLT_EPSILON, 0.5F,
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__builtin_huge_valf(), __builtin_nanf(""), __builtin_nansf(""), __FLT_DENORM_MIN__
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);
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SPROUT_NUMERIC_LIMITS_FLOATING_POINT_SPECIALIZED_DECL(
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double,
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DBL_MIN, DBL_MAX,
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DBL_EPSILON, 0.5,
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__builtin_huge_val(), __builtin_nan(""), __builtin_nans(""), __DBL_DENORM_MIN__
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);
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SPROUT_NUMERIC_LIMITS_FLOATING_POINT_SPECIALIZED_DECL(
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long double,
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LDBL_MIN, LDBL_MAX,
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LDBL_EPSILON, 0.5L,
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__builtin_huge_val(), __builtin_nan(""), __builtin_nans(""), __LDBL_DENORM_MIN__
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);
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#undef SPROUT_NUMERIC_LIMITS_FLOATING_POINT_SPECIALIZED_DECL
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#else // #ifdef SPROUT_NO_CXX11_NUMERIC_LIMITS
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using numeric_limits = std::numeric_limits<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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class numeric_limits
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: public std::numeric_limits<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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#endif // #ifdef SPROUT_NO_CXX11_NUMERIC_LIMITS
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} // namespace sprout
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#endif // #ifndef SPROUT_LIMITS_HPP
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