Provided by: allegro5-doc_5.2.3.0-1_all 

NAME
al_get_haptic_effect_duration - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h> double al_get_haptic_effect_duration(ALLEGRO_HAPTIC_EFFECT * effect)
DESCRIPTION
Returns the estimated duration in seconds of a single loop of the given haptic effect. The effect's effect.replay must have been filled in correctly before using this function.
SINCE
5.1.9 [Unstable API]: Perhaps could be simplified due to limited support for all the exposed features across all of the platforms. Awaiting feedback from users.