man fixsqrt () - Fixed point square root. Allegro game programming library.
NAME
fixsqrt - Fixed point square root. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
fixed fixsqrt(fixed x);
DESCRIPTION
This finds out the non negative square root of `x'. If `x' is negative, `errno' is set to EDOM and the function returns zero.