Rand.hh

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/*
 * Copyright (C) 2012-2014 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/
#ifndef _IGNITION_RAND_HH_
#define _IGNITION_RAND_HH_

#include <random>
#include <cmath>
#include <cstdint>
#include <ignition/math/Helpers.hh>

namespace ignition
{
  namespace math
  {
    typedef std::mt19937 GeneratorType;
    typedef std::uniform_real_distribution<double> UniformRealDist;
    typedef std::normal_distribution<double> NormalRealDist;
    typedef std::uniform_int_distribution<int32_t> UniformIntDist;

    class IGNITION_VISIBLE Rand
    {
      public: static void Seed(unsigned int _seed);

      public: static unsigned int Seed();

      public: static double DblUniform(double _min = 0, double _max = 1);

      public: static double DblNormal(double _mean = 0, double _sigma = 1);

      public: static int32_t IntUniform(int _min, int _max);

      public: static int32_t IntNormal(int _mean, int _sigma);

      private: static GeneratorType *randGenerator;

      private: static uint32_t seed;
    };
  }
}
#endif