al_fwrite32be man page

#include <allegro5/allegro.h>

size_t al_fwrite32be(ALLEGRO_FILE *f, int32_t l)

Writes a 32-bit word in big-endian format (MSB first).

Returns the number of bytes written: 4 on success, less than 4 on an error.

al_fwrite32le(3)

al_fwrite(3), al_fwrite32le(3).