src/nt/gl/lcm/lib.hpp
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|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include "../gcd/lib.hpp" | ||
| 4 | |||
| 5 | namespace tifa_libs { | ||
| 6 | |||
| 7 | template <int_c T, int_c U> | ||
| 8 | 381 | CEXP std::common_type_t<T, U> lcm(T a, U b) NE { | |
| 9 | using V = std::common_type_t<T, U>; | ||
| 10 | using W = to_uint_t<V>; | ||
| 11 |
4/8std::common_type<unsigned int, unsigned int>::type tifa_libs::lcm<unsigned int, unsigned int>(unsigned int, unsigned int):
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std::common_type<unsigned long, unsigned long>::type tifa_libs::lcm<unsigned long, unsigned long>(unsigned long, unsigned long):
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381 | retif_((!a || !b) [[unlikely]], 0); |
| 12 | 381 | auto [v, u] = minmax(a = abs(a), b = abs(b)); | |
| 13 | 381 | return u / (V)gcd_impl_::gcd__<W, W>(u, v) * v; | |
| 14 | } | ||
| 15 | |||
| 16 | } // namespace tifa_libs | ||
| 17 |