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On 13/10/2010 14.12, KHMan wrote:
Anyway most app developers do not need to code DCTs and FFTs nowadays.

Mostly true, but last time I worked in game development I also wrote tools. I used Lua whenever possible to save time and effort, but even for simple image file manipulation I often had to resort to C/C++. I remember having to write horrible Lua bit ops workarounds just to be able to make small changes to data files.