Function: sqrtnint
Section: number_theoretical
C-Name: sqrtnint
Prototype: GL
Help: sqrtnint(x,n): integer n-th root of x, where x is non-negative integer.
Description:
 (gen,small):int sqrtnint($1, $2)
Doc: returns the integer $n$-th root of $x$, i.e. the largest integer $y$ such
 that $y^n \leq x$, where $x$ is a non-negative integer.
 \bprog
 ? N = 120938191237; sqrtnint(N, 5)
 %1 = 164
 ? N^(1/5)
 %2 = 164.63140849829660842958614676939677391
 @eprog\noindent The special case $n = 2$ is \tet{sqrtint}
