common.hpp

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/* Copyright (c) 2023 SparseLinearAlgebra                                         */
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#ifndef SPLA_COMMON_HPP
#define SPLA_COMMON_HPP
 
#include <spla/config.hpp>
 
#include <cmath>
 
namespace spla {
 
    static inline uint clamp(uint x, uint left, uint right) {
        return std::min(std::max(x, left), right);
    }
 
    static inline uint div_up(uint what, uint by) {
        return what / by + (what % by ? 1 : 0);
    }
 
    static inline uint div_up_clamp(uint what, uint by, uint left, uint right) {
        return clamp(div_up(what, by), left, right);
    }
 
    static inline uint align(uint what, uint alignment) {
        return what + (what % alignment ? alignment - (what % alignment) : 0);
    }
 
    static inline std::size_t aligns(std::size_t what, std::size_t alignment) {
        return what + (what % alignment ? alignment - (what % alignment) : 0);
    }
 
    static inline uint ceil_to_pow2(uint n) {
        uint r = 1;
        while (r < n) r *= 2u;
        return r;
    }
 
    static inline uint floor_to_pow2(uint n) {
        uint r = 1;
        while (r <= n) {
            r *= 2;
        }
        return r / 2;
    }
 
}// namespace spla
 
#endif//SPLA_COMMON_HPP