mirror/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout.git synced 2025-07-14 15:04:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

add C++14 constexpr version: random generator

Browse source
This commit is contained in:
bolero-MURAKAMI 2013-11-05 17:39:11 +09:00
parent 2c9f0647f4
commit 230630b45b
6 changed files with 44 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

9
sprout/random/linear_congruential.hpp
View file

@ -82,6 +82,10 @@ namespace sprout {
SPROUT_CONSTEXPR result_type max() const SPROUT_NOEXCEPT {
return static_max();
}
SPROUT_CXX14_CONSTEXPR result_type operator()() {
x_ = sprout::random::detail::const_mod<UIntType, m>::mult_add(a, x_, c);
return x_;
}
SPROUT_CONSTEXPR sprout::random::random_result<linear_congruential_engine> const operator()() const {
return generate(sprout::random::detail::const_mod<UIntType, m>::mult_add(a, x_, c));
}
@ -167,7 +171,7 @@ namespace sprout {
template<typename LcfResult>
SPROUT_CONSTEXPR sprout::random::random_result<rand48> generate(LcfResult const& lcf_result) const {
return sprout::random::random_result<rand48>(
lcf_result.result() >> 17,
static_cast<result_type>(lcf_result.result()) >> 17,
rand48(lcf_result.engine(), private_construct_t())
);
}
@ -184,6 +188,9 @@ namespace sprout {
SPROUT_CONSTEXPR result_type max() const {
return static_max();
}
SPROUT_CXX14_CONSTEXPR result_type operator()() {
return static_cast<result_type>(static_cast<result_type>(lcf_()) >> 17);
}
SPROUT_CONSTEXPR sprout::random::random_result<rand48> const operator()() const {
return generate(lcf_());
}