Random.ipp

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#pragma once
 
#include "Math/Random/Random.h"
 
#include <Common/assertion.h>
 
namespace ph::math
{
 
template<std::size_t N, typename T>
inline std::array<T, N> Random::sampleND()
{
    static_assert(N != 0);
 
    std::array<T, N> values;
    for(std::size_t n = 0; n < N; ++n)
    {
        values[n] = static_cast<T>(sample());
    }
    return values;
}
 
inline std::size_t Random::index(const std::size_t lowerBound, const std::size_t upperBound)
{
    PH_ASSERT_GT(upperBound, lowerBound);
 
    const std::size_t numIntervals = upperBound - lowerBound;
    std::size_t index = static_cast<std::size_t>(lowerBound + sample() * numIntervals);
 
    return index < lowerBound ? lowerBound : (index >= upperBound ? upperBound - 1 : index);
}
 
}// end namespace ph::math