al_fixsqrt(3) al_fixsqrt(3)

al_fixsqrt - Allegro 5 API

#include <allegro5/allegro.h>
al_fixed al_fixsqrt(al_fixed x)

This finds out the non negative square root of x. If x is negative, Allegro’s errno is set to EDOM and the function returns zero.

Allegro reference manual