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这是一个压缩解压包,用C语言进行编程的,里面有详细的源代码.

The default version (interpolate8x8_ia64.s) of the interpolate functions
suffer from some rounding errors, but are fast. I our oppinion there
is no need to be such exact here. Just in the case we provide another
set of function with exact rounding: interpolate8x8_ia64_exact.s