NAME
    isqrt - integer part of square root

SYNOPSIS
    isqrt(x)

TYPES
    x		nonnegative real

    return	nonnegative real

DESCRIPTION
    Return the greatest integer n for which n^2 <= x.

EXAMPLE
    > print isqrt(8.5), isqrt(200), isqrt(2e6), isqrt(2e56)
    2 14 1414 14142135623730950488016887242

LIMITS
    x > 0

LIBRARY
    NUMBER *qisqrt(NUMBER *x)

SEE ALSO
    sqrt, iroot