tmp/tmpi3o4f56k/{from.md → to.md}
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### Least common multiple <a id="numeric.ops.lcm">[[numeric.ops.lcm]]</a>
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``` cpp
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template <class M, class N>
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constexpr common_type_t<M,N> lcm(M m, N n);
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```
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*Requires:* `|m|` and `|n|` shall be representable as a value of
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`common_type_t<M, N>`. The least common multiple of `|m|` and `|n|`
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shall be representable as a value of type `common_type_t<M,N>`.
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*Remarks:* If either `M` or `N` is not an integer type, or if either is
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cv `bool` the program is ill-formed.
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*Returns:* Zero when either `m` or `n` is zero. Otherwise, returns the
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least common multiple of `|m|` and `|n|`.
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*Throws:* Nothing.
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