nfnt/resize — pull request #4 by gsadams (2013-07-06 06:02:12+00:00)
Title: Use a lookup table to speed up the Lanczos kernels

Profiling the resize operation using Lanczos kernels showed that most of
the time was spent in the Sin function, which is called twice per
evaluation of the Lanczos kernel. Generating a lookup table and doing a
linear interpolation between table entries speeds up the resize by a
factor of 4.