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https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-23 21:25:49 +00:00
add finite check: is_integer, is_odd, is_even
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parent
9ff74b52eb
commit
3f434dd7e1
6 changed files with 34 additions and 8 deletions
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@ -1,7 +1,6 @@
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#ifndef SPROUT_MATH_FLOAT2_EXPONENT_HPP
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#define SPROUT_MATH_FLOAT2_EXPONENT_HPP
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#include <climits>
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#include <limits>
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#include <type_traits>
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#include <sprout/config.hpp>
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@ -1,7 +1,6 @@
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#ifndef SPROUT_MATH_FLOAT2_SIG_EXP_HPP
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#define SPROUT_MATH_FLOAT2_SIG_EXP_HPP
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#include <climits>
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#include <limits>
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#include <type_traits>
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#include <sprout/config.hpp>
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@ -4,18 +4,27 @@
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/math/isfinite.hpp>
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#include <sprout/math/fmod.hpp>
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namespace sprout {
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namespace math {
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namespace detail {
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template<typename T>
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inline SPROUT_CONSTEXPR bool
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is_even_unchecked(T x) {
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return sprout::math::fmod(x, T(2)) == T(0);
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}
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template<
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typename FloatType,
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typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR bool
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is_even(FloatType x) {
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return sprout::math::fmod(x, FloatType(2)) == FloatType(0);
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return sprout::math::isfinite(x)
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&& sprout::math::detail::is_even_unchecked(x)
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;
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}
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} // namespace detail
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@ -4,18 +4,27 @@
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/math/isfinite.hpp>
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#include <sprout/math/trunc.hpp>
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namespace sprout {
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namespace math {
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namespace detail {
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template<typename T>
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inline SPROUT_CONSTEXPR bool
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is_integer_unchecked(T x) {
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return x == sprout::math::trunc(x);
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}
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template<
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typename FloatType,
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typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR bool
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is_integer(FloatType x) {
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return x == sprout::math::trunc(x);
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return sprout::math::isfinite(x)
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&& sprout::math::detail::is_integer_unchecked(x)
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;
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}
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} // namespace detail
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@ -4,18 +4,27 @@
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/math/isfinite.hpp>
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#include <sprout/math/fmod.hpp>
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namespace sprout {
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namespace math {
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namespace detail {
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template<typename T>
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inline SPROUT_CONSTEXPR bool
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is_odd_unchecked(T x) {
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return sprout::math::fmod(x, T(2)) == T(1);
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}
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template<
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typename FloatType,
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typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR bool
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is_odd(FloatType x) {
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return sprout::math::fmod(x, FloatType(2)) == FloatType(1);
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return sprout::math::isfinite(x)
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&& sprout::math::detail::is_odd_unchecked(x)
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;
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}
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} // namespace detail
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@ -38,6 +38,7 @@ namespace sprout {
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init = false;
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}
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public:
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// 20.5.4.1, constructors
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SPROUT_CONSTEXPR optional() SPROUT_NOEXCEPT
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: init(false)
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{}
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@ -61,7 +62,7 @@ namespace sprout {
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: init(v.is_initialized())
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, val(v.is_initialized() ? holder_type(*v) : holder_type())
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{}
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// 20.5.4.3, assignment
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optional& operator=(sprout::nullopt_t v) SPROUT_NOEXCEPT {
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assign(v);
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return *this;
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@ -106,14 +107,14 @@ namespace sprout {
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void reset(argument_type v) {
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assign(v);
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}
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// 20.5.4.4, swap
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void swap(optional& other)
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SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout::swap(val, other.val)))
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{
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sprout::swap(init, other.init);
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sprout::swap(val, other.val);
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}
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// 20.5.4.5, observers
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SPROUT_CONSTEXPR reference_const_type operator*() const {
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return (SPROUT_ASSERT(is_initialized()), true) ? val.get()
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: val.get()
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