diff options
| -rw-r--r-- | comphelper/source/misc/random.cxx | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/comphelper/source/misc/random.cxx b/comphelper/source/misc/random.cxx index 4da4acb84d7a..4a96b59672f8 100644 --- a/comphelper/source/misc/random.cxx +++ b/comphelper/source/misc/random.cxx @@ -10,12 +10,13 @@ * Copyright (C) 2012 Tino Kluge <tino.kluge@hrz.tu-chemnitz.de> */ -#include <boost/random.hpp> #include <comphelper/random.hxx> #include <rtl/instance.hxx> +#include <assert.h> +#include <random> // this is nothing but a simple wrapper around -// the boost random generators +// the std::random generators namespace comphelper { @@ -23,21 +24,21 @@ namespace rng { // underlying random number generator -// boost::mt19937 implements the Mersenne twister algorithm which +// std::mt19937 implements the Mersenne twister algorithm which // is fast and has good statistical properties, it produces integers // in the range of [0, 2^32-1] internally // memory requirement: 625*sizeof(uint32_t) // http://en.wikipedia.org/wiki/Mersenne_twister -#define BOOST_RNG_ALGO boost::mt19937 +#define STD_RNG_ALGO std::mt19937 struct RandomNumberGenerator { - BOOST_RNG_ALGO global_rng; + STD_RNG_ALGO global_rng; RandomNumberGenerator() { // initialises the state of the global random number generator // should only be called once. - // (note, a few boost::variate_generator<> (like normal) have their + // (note, a few std::variate_generator<> (like normal) have their // own state which would need a reset as well to guarantee identical // sequence of numbers, e.g. via myrand.distribution().reset()) global_rng.seed(time(NULL)); @@ -55,21 +56,21 @@ void reseed(int i) // uniform ints [a,b] distribution int uniform_int_distribution(int a, int b) { - boost::random::uniform_int_distribution<int> dist(a, b); + std::uniform_int_distribution<int> dist(a, b); return dist(theRandomNumberGenerator::get().global_rng); } // uniform ints [a,b] distribution unsigned int uniform_uint_distribution(unsigned int a, unsigned int b) { - boost::random::uniform_int_distribution<unsigned int> dist(a, b); + std::uniform_int_distribution<unsigned int> dist(a, b); return dist(theRandomNumberGenerator::get().global_rng); } // uniform size_t [a,b] distribution size_t uniform_size_distribution(size_t a, size_t b) { - boost::random::uniform_int_distribution<size_t> dist(a, b); + std::uniform_int_distribution<size_t> dist(a, b); return dist(theRandomNumberGenerator::get().global_rng); } @@ -77,7 +78,7 @@ size_t uniform_size_distribution(size_t a, size_t b) double uniform_real_distribution(double a, double b) { assert(a < b); - boost::random::uniform_real_distribution<double> dist(a, b); + std::uniform_real_distribution<double> dist(a, b); return dist(theRandomNumberGenerator::get().global_rng); } |