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add floor, ceil, trunc, round

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This commit is contained in:
bolero-MURAKAMI 2012-07-05 00:09:44 +09:00
parent c6fb8af0c5
commit 77f058a34c
12 changed files with 236 additions and 11 deletions
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6
sprout/random/binomial_distribution.hpp
View file

@ -1,7 +1,6 @@
#ifndef SPROUT_RANDOM_BINOMIAL_DISTRIBUTION_HPP
#define SPROUT_RANDOM_BINOMIAL_DISTRIBUTION_HPP
#include <cmath>
#include <iosfwd>
#include <istream>
#include <stdexcept>
@ -12,6 +11,7 @@
#include <sprout/math/log.hpp>
#include <sprout/math/pow.hpp>
#include <sprout/math/sqrt.hpp>
#include <sprout/math/floor.hpp>
#include <sprout/random/random_result.hpp>
#include <sprout/random/uniform_01.hpp>
@ -307,7 +307,7 @@ namespace sprout {
}
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, binomial_distribution> generate_4(Engine const& eng, RealType v, RealType u, RealType us) const {
using std::floor;
using sprout::floor;
return generate_5(eng, v, u, us, static_cast<IntType>(floor((2 * btrd_.a / us + btrd_.b) * u + btrd_.c)));
}
template<typename Engine>
@ -332,7 +332,7 @@ namespace sprout {
}
template<typename Engine>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, binomial_distribution> generate_1_1(Engine const& eng, RealType u) const {
using std::floor;
using sprout::floor;
using sprout::abs;
return sprout::random::random_result<Engine, binomial_distribution>(
static_cast<IntType>(floor((2 * btrd_.a / (RealType(0.5) - abs(u)) + btrd_.b) * u + btrd_.c)),

4
sprout/random/geometric_distribution.hpp
View file

@ -1,12 +1,12 @@
#ifndef SPROUT_RANDOM_GEOMETRIC_DISTRIBUTION_HPP
#define SPROUT_RANDOM_GEOMETRIC_DISTRIBUTION_HPP
#include <cmath>
#include <ios>
#include <limits>
#include <stdexcept>
#include <sprout/config.hpp>
#include <sprout/math/log.hpp>
#include <sprout/math/floor.hpp>
#include <sprout/random/random_result.hpp>
#include <sprout/random/uniform_01.hpp>
@ -98,7 +98,7 @@ namespace sprout {
template<typename Engine, typename Random>
SPROUT_CONSTEXPR sprout::random::random_result<Engine, geometric_distribution> generate_1(Random const& rnd) const {
using sprout::log;
using std::floor;
using sprout::floor;
return sprout::random::random_result<Engine, geometric_distribution>(
static_cast<IntType>(floor(log(RealType(1) - rnd.result()) / log_1mp_)),
rnd.engine(),