#ifndef COLORS_H #define COLORS_H struct Rgb { int r, g, b; }; struct Hls { int h; float l, s; }; void hsl2rgb(struct Rgb *, const struct Hls const *); void rgb2hsl(struct Hls *, const struct Rgb const *); static void decspan(const int); static void hexspan(const char *); static void b(char * const); void print_plname(const char*); #endif