Lines Matching defs:gamma
32 double gamma = 1.0;
33 int maxin = 16383; /* 14 bit gamma input */
34 int maxout = 255; /* 8 bit gamma output */
42 printf("Usage: %s gamma [shadow [highlight [maxin [maxout]]]]\n", argv[0]);
48 gamma = atof(argv[1]);
107 if ((gamma < 0.1) || (gamma > 5))
109 printf("%s error: gamma=%f out of range [0.1;5]\n", argv[0], gamma);
125 out = maxout * pow((double) (in - shadow)/(highlight-shadow), (1.0/gamma));