debian man page for rgb_to_hsv

hsv_to_rgb(3alleg4)						  Allegro manual					       hsv_to_rgb(3alleg4)

NAME
       hsv_to_rgb, rgb_to_hsv - Converts color values between the HSV and RGB color spaces. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void hsv_to_rgb(float h, float s, float v, int *r, int *g, int *b);

       void rgb_to_hsv(int r, int g, int b, float *h, float *s, float *v);

DESCRIPTION
       Convert	color  values  between	the HSV and RGB color spaces. The RGB values range from 0 to 255, hue is from 0 to 360, and saturation and
       value are from 0 to 1. Example:

	  int r, g, b;
	  float hue, saturation, value;
	  ...
	  /* Convert a reddish color to HSV format. */
	  rgb_to_hsv(255, 0, 128, &hue, &saturation, &value);

	  /* Now put our tin foil hat, and verify that. */
	  hsv_to_rgb(hue, saturation, value, &r, &g, &b);
	  ASSERT(r == 255);
	  ASSERT(g == 0);
	  ASSERT(b == 128);

SEE ALSO
       exlights(3alleg4), exrgbhsv(3alleg4)

Allegro 							   version 4.4.2					       hsv_to_rgb(3alleg4)