Returns true if the user has requested data to be fit.

We should in theory be using fseeko()/ftello() with off_t and _fseeki64()/_ftelli64() with __int64, waiting for the PR that does that in a very portab

Returns true if val is NAN or INFINITY

Avoid naming collision with imgui_demo.cpp's HelpMarker() for unity builds.

Compress len zeros to output. Return -1 on a write error or memory allocation failure by gz_comp(), or 0 on success. */

The reason we disable this if it is a matrix is because this matrix_op claims to not alias any matrix. But obviously that would be a problem if we le

Checks whether the supplied bytes match the PNG signature. We allow * checking less than the full 8-byte signature so that those apps that * alread