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rest_callback(3)                Allegro manual                rest_callback(3)

NAME
       rest_callback - Like rest(), but calls the callback during the wait.
       Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void rest_callback(long time, void (*callback)())

DESCRIPTION
       Like rest(), but for non-zero values continually calls the specified
       function while it is waiting for the required time to elapse. If the
       provided `callback' parameter is NULL, this function does exactly the
       same thing as calling rest().

SEE ALSO
       install_timer(3), rest(3)

Allegro                          version 4.4.2                rest_callback(3)