add sprout::exp2, expm1

This commit is contained in:
bolero-MURAKAMI 2012-05-04 18:21:18 +09:00
parent 6baf082234
commit 1417a8acd2
4 changed files with 131 additions and 0 deletions

38
sprout/math/exp10.hpp Normal file
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#ifndef SPROUT_MATH_EXP10_HPP
#define SPROUT_MATH_EXP10_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/exp.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/utility/enabler_if.hpp>
namespace sprout {
namespace math {
namespace detail {
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
exp10(FloatType x) {
return sprout::math::detail::exp(x * sprout::math::ln_ten<FloatType>());
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR double
exp10(IntType x) {
return sprout::math::detail::exp10(static_cast<double>(x));
}
} // namespace detail
using sprout::math::detail::exp10;
} // namespace math
using sprout::math::exp10;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_EXP10_HPP

45
sprout/math/exp2.hpp Normal file
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#ifndef SPROUT_MATH_EXP2_HPP
#define SPROUT_MATH_EXP2_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/exp.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/utility/enabler_if.hpp>
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
# include <cmath>
#endif
namespace sprout {
namespace math {
namespace detail {
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
exp2(FloatType x) {
return sprout::math::detail::exp(x * sprout::math::ln_two<FloatType>());
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR double
exp2(IntType x) {
return sprout::math::detail::exp2(static_cast<double>(x));
}
} // namespace detail
# if SPROUT_USE_BUILTIN_CMATH_FUNCTION
using std::exp2;
# else
using sprout::math::detail::exp2;
# endif
} // namespace math
using sprout::math::exp2;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_EXP2_HPP

45
sprout/math/expm1.hpp Normal file
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#ifndef SPROUT_MATH_EXPM1_HPP
#define SPROUT_MATH_EXPM1_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/exp.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/utility/enabler_if.hpp>
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
# include <cmath>
#endif
namespace sprout {
namespace math {
namespace detail {
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
expm1(FloatType x) {
return sprout::math::detail::exp(x) - 1;
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR double
expm1(IntType x) {
return sprout::math::detail::expm1(static_cast<double>(x));
}
} // namespace detail
# if SPROUT_USE_BUILTIN_CMATH_FUNCTION
using std::expm1;
# else
using sprout::math::detail::expm1;
# endif
} // namespace math
using sprout::math::expm1;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_EXPM1_HPP

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#define SPROUT_MATH_EXPONENTIAL_HPP #define SPROUT_MATH_EXPONENTIAL_HPP
#include <sprout/math/exp.hpp> #include <sprout/math/exp.hpp>
#include <sprout/math/exp10.hpp>
#include <sprout/math/exp2.hpp>
#include <sprout/math/expm1.hpp>
#include <sprout/math/log.hpp> #include <sprout/math/log.hpp>
#include <sprout/math/log10.hpp> #include <sprout/math/log10.hpp>
#include <sprout/math/log2.hpp> #include <sprout/math/log2.hpp>