std::lcm (3) - Linux Manuals
std::lcm: std::lcm
NAME
Synopsis
Defined in header <numeric>
template< class M, class N> (since C++17)
constexpr std::common_type_t<M, N> lcm(M m, N n);
Computes the least common multiple of the integers m and n.
Parameters
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|.
Remarks
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>.
Exceptions
Throws no exceptions.
See also
gcd constexpr function template returning the greatest common divisor of two integers
(C++17)