al_color_rgb_to_linear - Man Page

#include <allegro5/allegro_color.h>

void al_color_rgb_to_linear(float red, float green, float blue,
   float *r, float *g, float *b)

Convert gamma corrected sRGB values (i.e. normal RGB) to linear sRGB space.

5.2.8

al_color_linear(3), al_color_linear_to_rgb(3)

al_color_linear(3), al_color_linear_to_rgb(3).