Is it OK to set a transformation now? Only if png_start_read_image or * png_read_update_info have not been called. It is not necessary for the IHDR

========================================================================= * Check for a valid deflate stream state. Return 0 if ok, 1 if not. */

========================================================================= * Flush as much pending output as possible. All deflate() output, except fo

PNG signed integers are saved in 32-bit 2's complement format. ANSI C-90 * defines a cast of a signed integer to an unsigned integer either to prese

This function is the "residual" for a least squares problem. It takes an input/output pair and compares it to the output of our model and returns th