j riv questions

• Optimization of variable multiplication
• In C, how can one convert HTML strings to C strings?
• Is there a benefit in using unsigned long for timeval members?
• How can I make a binary for Windows that will make it possible for a non Coder to just get a crash dump which can be fed to gdb?
• Is there a way to find the second to last valid index in a rolling window?
• What is gl_ModelViewMatrix and gl_ModelViewProjectionMatrix in modern OpenGL?
• How do we get Indices for glDrawElements()?
• What is Half vector in modern GLSL?
• How can you force recompilation of a single file in a Makefile?
• Is there a need to code a new 3D engine? [closed]

j riv answers