Function: sqrtint
Section: number_theoretical
C-Name: sqrtint
Prototype: G
Help: sqrtint(x): integer square root of x, where x is a non-negative integer.
Description:
 (gen):int sqrtint($1)
Doc: returns the integer square root of $x$, i.e. the largest integer $y$
 such that $y^2 \leq x$, where $x$ a non-negative integer.
 \bprog
 ? N = 120938191237; sqrtint(N)
 %1 = 347761
 ? sqrt(N)
 %2 = 347761.68741970412747602130964414095216
 @eprog
