fade_interpolate - Calculates a new palette interpolated between two others. Allegro game programming

       Calculates  a  temporary  palette part way between source and dest, returning it in the output parameter.
       The position between the two extremes is specified by the pos value: 0 returns an exact copy  of  source,
       64  returns  dest,  32  returns a palette half way between the two, etc. This routine only affects colors
       between from and to (inclusive: pass 0 and 255 to interpolate the entire palette).

       fade_interpolate  -  Calculates  a  new palette interpolated between two others. Allegro game programming
       library.

fade_in(3alleg4), fade_out(3alleg4), fade_from(3alleg4)

Allegro                                           version 4.4.3                        fade_interpolate(3alleg4)

#include<allegro.h>voidfade_interpolate(constPALETTEsource,constPALETTEdest,PALETTEoutput,intpos,intfrom,intto);