dynamically allocates a new string with a copy of the null terminated input text */

creates a new chain node with the given parameters, from the memory in the lists */

Safely check if multiplying two integers will overflow (no undefined behavior, compiler removing the code, etc...) and output result. */

expected_size is expected output size, to avoid intermediate allocations. Set to 0 if not known. */

Outputs various dimensions and positions in the image related to the Adam7 reduced images. passw: output containing the width of the 7 passes passh: o