25 Algorithms library [algorithms]

25.9 Generalized numeric operations [numeric.ops]

25.9.14 Least common multiple [numeric.ops.lcm]

template<class M, class N> constexpr common_type_t<M,N> lcm(M m, N n);
Mandates: M and N both are integer types and not cv bool.
Preconditions: |m| and |n| are representable as a value of common_­type_­t<M, N>.
The least common multiple of |m| and |n| is representable as a value of type common_­type_­t<M,N>.
Returns: Zero when either m or n is zero.
Otherwise, returns the least common multiple of |m| and |n|.
Throws: Nothing.