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Replace reduce with bespoke implementation

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If _this_ isn't `constexpr` compatible, I'm going to propose removing
support for the MacOS clang build.
This commit is contained in:
Chip Hogg
2022-03-19 17:35:20 +00:00
parent f495ad9e75
commit 6872117bae
1 changed files with 5 additions and 1 deletions
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6
src/core/include/units/bits/prime.h
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@@ -101,7 +101,11 @@ constexpr auto coprimes_up_to(std::size_t n, const std::array<std::size_t, N>& b
template<std::size_t N> template<std::size_t N>
constexpr std::size_t product(const std::array<std::size_t, N>& values) constexpr std::size_t product(const std::array<std::size_t, N>& values)
{ {
return std::reduce(values.begin(), values.end(), std::size_t{1}, std::multiplies{}); std::size_t product = 1;
for (const auto& v : values) {
product *= v;
}
return product;
} }
// A configurable instantiation of the "wheel factorization" algorithm [1] for prime numbers. // A configurable instantiation of the "wheel factorization" algorithm [1] for prime numbers.