DOKK / manpages / debian 10 / allegro4-doc / geta32.3alleg4.en
geta32(3alleg4) Allegro manual geta32(3alleg4)

geta32 - Extract the alpha component form a 32-bit pixel format color. Allegro game programming library.

#include <allegro.h>

int geta32(int c);

Given a color in a 32-bit pixel format, this function extracts the alpha component (ranging 0-255).

getr8(3alleg4)

version 4.4.2 Allegro