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added align_ceil and align_floor functions

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This commit is contained in:
andrey.zhirnov
2019-06-20 12:23:34 +03:00
parent c0d0df4df0
commit 62a9da8985
1 changed files with 24 additions and 0 deletions
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24
headers/enduro2d/math/_math.hpp
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@@ -696,4 +696,28 @@ namespace e2d::math
E2D_ASSERT(!approximately(l, r, T(0)));
return (v - l) / (r - l);
}
//
// align_floor/align_ceil
//
template < typename T, typename U >
std::enable_if_t<
std::is_unsigned_v<T> &&
std::is_convertible_v<U,T>,
T>
align_ceil (T v, U alignment) {
T result = ((v + alignment - 1) / alignment) * alignment;
E2D_ASSERT(result >= v);
return result;
}
template < typename T, typename U >
std::enable_if_t<
std::is_unsigned_v<T> &&
std::is_convertible_v<U,T>,
T>
align_floor (T v, U alignment) {
return (v / alignment) * alignment;
}
}