cosmopolitan support

colours.c

@@ -90,6 +90,7 @@ struct colour get_hs_l_v(struct colour c, enum colour_space sp) {
             ret.s = (ret.v - ret.l) / m_min(arr, 2); 
         }
     }
+    ret.sp = CS_HSL;
     return ret;
 }
 
@@ -231,8 +232,6 @@ void test_print_wheel() {
     for(int i = 0; i < 360; i+=5) {
         c.h = (double)i;
         struct colour rgb = get_rgb(c);
-        /*printf("HSL: %f %f %f\n",c.h, c.s, c.l);*/
-        /*printf("RGB: %d %d %d\n",rgb.r,rgb.g,rgb.b);*/
         print_colour(rgb);
 
     }

colours.h

@@ -11,9 +11,10 @@
 #define H_COLOURS
 
 enum colour_space {
-    CS_RGB = 0, // default to RGB
-    CS_HSV = 1,
-    CS_HSL = 2,
+    CS_INVALID = 0,
+    CS_RGB = 1, // default to RGB
+    CS_HSV = 2,
+    CS_HSL = 3,
 };
 
 struct colour {