25 lines
518 B
C++
25 lines
518 B
C++
#pragma once
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#include <cmath>
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namespace mbgl {
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namespace util {
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// Constrains n to the given range (including min, excluding max) via modular
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// arithmetic.
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template <typename T>
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T wrap(T value, T min, T max) {
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if (value >= min && value < max) {
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return value;
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} else if (value == max) {
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return min;
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}
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const T delta = max - min;
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const T wrapped = min + std::fmod(value - min, delta);
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return value < min ? wrapped + delta : wrapped;
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}
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} // namespace util
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} // namespace mbgl
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