44 lines
973 B
C++
44 lines
973 B
C++
#pragma once
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#ifndef MESSMER_BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_UTILS_MATH_H_
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#define MESSMER_BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_UTILS_MATH_H_
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#include <cstdint>
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#include <cmath>
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namespace blobstore {
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namespace onblocks {
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namespace utils {
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template<typename INT_TYPE>
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inline INT_TYPE intPow(INT_TYPE base, INT_TYPE exponent) {
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INT_TYPE result = 1;
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for(INT_TYPE i = 0; i < exponent; ++i) {
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result *= base;
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}
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return result;
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}
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template<typename INT_TYPE>
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inline INT_TYPE ceilDivision(INT_TYPE dividend, INT_TYPE divisor) {
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return (dividend + divisor - 1)/divisor;
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}
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template<typename INT_TYPE>
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inline INT_TYPE maxZeroSubtraction(INT_TYPE minuend, INT_TYPE subtrahend) {
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if (minuend < subtrahend) {
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return 0u;
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}
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return minuend-subtrahend;
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}
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template<typename INT_TYPE>
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inline INT_TYPE ceilLog(INT_TYPE base, INT_TYPE value) {
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return std::ceil((long double)std::log(value)/(long double)std::log(base));
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}
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}
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}
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}
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#endif
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