[vorbis] mdct.h - PI1_8, PI2_8 etc.

[Carsten Haese]

>#define cPI3_8 .38268343236508977175F
>#define cPI2_8 .70710678118654752441F
>#define cPI1_8 .92387953251128675613F

Those are the values for cos(PI/8), cos(2*PI/8), and cos(3*PI/8).

Hope this helps,

Carsten Haese.

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