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add sprout/math/comparison.hpp

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This commit is contained in:
bolero-MURAKAMI 2012-07-06 23:10:49 +09:00
parent d51bd06eda
commit 1c65d59971
20 changed files with 379 additions and 109 deletions
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10
sprout/random/normal_distribution.hpp
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@ -124,13 +124,11 @@ namespace sprout {
{}
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, normal_distribution> generate_2(Engine const& eng, RealType r1, RealType r2, RealType cached_rho, bool valid) const {
using sprout::sin;
using sprout::cos;
return sprout::random::random_result<Engine, normal_distribution>(
cached_rho
* (valid
? cos(result_type(2) * sprout::math::pi<result_type>() * r1)
: sin(result_type(2) * sprout::math::pi<result_type>() * r1)
? sprout::cos(result_type(2) * sprout::math::pi<result_type>() * r1)
: sprout::sin(result_type(2) * sprout::math::pi<result_type>() * r1)
)
* sigma_ + mean_,
eng,
@ -147,9 +145,7 @@ namespace sprout {
}
template<typename Engine, typename Random>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, normal_distribution> generate_1_1(RealType r1, Random const& rnd) const {
using sprout::sqrt;
using sprout::log;
return generate_2(rnd.engine(), r1, rnd.result(), sqrt(-result_type(2) * log(result_type(1) - rnd.result())), true);
return generate_2(rnd.engine(), r1, rnd.result(), sprout::sqrt(-result_type(2) * sprout::log(result_type(1) - rnd.result())), true);
}
template<typename Engine, typename Random>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, normal_distribution> generate_1(Random const& rnd) const {