+static int hsv_to_rgb (double *hsv, double *rgb) /* {{{ */
+{
+ double c = hsv[2] * hsv[1];
+ double h = hsv[0] / 60.0;
+ double x = c * (1.0 - fabs (fmod (h, 2.0) - 1));
+ double m = hsv[2] - c;
+
+ rgb[0] = 0.0;
+ rgb[1] = 0.0;
+ rgb[2] = 0.0;
+
+ if ((0.0 <= h) && (h < 1.0)) { rgb[0] = 1.0; rgb[1] = x; rgb[2] = 0.0; }
+ else if ((1.0 <= h) && (h < 2.0)) { rgb[0] = x; rgb[1] = 1.0; rgb[2] = 0.0; }
+ else if ((2.0 <= h) && (h < 3.0)) { rgb[0] = 0.0; rgb[1] = 1.0; rgb[2] = x; }
+ else if ((3.0 <= h) && (h < 4.0)) { rgb[0] = 0.0; rgb[1] = x; rgb[2] = 1.0; }
+ else if ((4.0 <= h) && (h < 5.0)) { rgb[0] = x; rgb[1] = 0.0; rgb[2] = 1.0; }
+ else if ((5.0 <= h) && (h < 6.0)) { rgb[0] = 1.0; rgb[1] = 0.0; rgb[2] = x; }
+
+ rgb[0] += m;
+ rgb[1] += m;
+ rgb[2] += m;
+
+ return (0);
+} /* }}} int hsv_to_rgb */
+
+static uint32_t rgb_to_uint32 (double *rgb) /* {{{ */
+{
+ uint8_t r;
+ uint8_t g;
+ uint8_t b;
+
+ r = (uint8_t) (255.0 * rgb[0]);
+ g = (uint8_t) (255.0 * rgb[1]);
+ b = (uint8_t) (255.0 * rgb[2]);
+
+ return ((((uint32_t) r) << 16)
+ | (((uint32_t) g) << 8)
+ | ((uint32_t) b));
+} /* }}} uint32_t rgb_to_uint32 */