< cpp‎ | numeric
Defined in header <numeric>
template< class M, class N>
constexpr std::common_type_t<M, N> lcm(M m, N n);
(since C++17)

Computes the least common multiple of the integers m and n.


m, n - integer values

Return value

If either m or n is zero, returns zero. Otherwise, returns the least common multiple of |m| and |n|.


If either M or N is not an integer type, or if either is (possibly cv-qualified) bool, the program is ill-formed.

The behavior is undefined if |m|, |n|, or the least common multiple of |m| and |n| is not representable as a value of type std::common_type_t<M, N>.


Throws no exceptions.

See also

constexpr function template returning the greatest common divisor of two integers
(function template)