al_get_haptic_gain(3)                                    al_get_haptic_gain(3)

NAME
       al_get_haptic_gain - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              double al_get_haptic_gain(ALLEGRO_HAPTIC *hap)


DESCRIPTION
       Returns the current gain of the device.  Gain is much like volume for
       sound, it is as if every effect's intensity is multiplied by it.  Gain
       is a value between 0.0 and 1.0.  Only works correctly if
       al_get_haptic_capabilities(3) returns a value that has
       ALLEGRO_HAPTIC_GAIN(3)ALLEGRO_HAPTIC_CONSTANTS(3) set.  If this is not
       set, this function will simply return 1.0 and all effects will be
       played without any gain influence.

SINCE
       5.1.8

              [Unstable API]: Perhaps could be simplified due to limited
              support for all the exposed features across all of the
              platforms.  Awaiting feedback from users.

Allegro reference manual                                 al_get_haptic_gain(3)