Lines Matching defs:gamma
457 double gamma; /* gamma correction */
776 /* Linear gamma */
792 /* Read back gamma tables. I suppose I should check results... */
1284 /* create gamma table */
1287 /* gamma calculation by M.Reinelt <reinelt@eunet.at> */
1288 buf[temp] = (double) 255.0 * exp(log((temp + 0.5) / 1023.0) / opt->gamma)
1446 const double gamma)
1453 DBG (2, "gamma = %f\n", gamma);
1475 if (gamma <= 0.0)
1485 scan->gamma = gamma;