The isqrt function computes an integer approximation to the square root of x. The approximation is exact for perfect squares, and the error is less than 1 otherwise. Note: if , isqrt(x) returns 0.

The iroot function computes an integer approximation to the n^th root of x. The approximation is exact for perfect powers, and the error is less than 1 otherwise. If the optional third argument is given, it is set to true or false to show whether the root is exact or not. Note: if , and n is even, iroot(x, n) returns 0; if , and n is odd, iroot(x, n) returns - iroot(- x, n).

The isqrt command is thread-safe as of Maple 15.

For more information on thread safety, see index/threadsafe.