1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
9 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: fft transform
15 last mod: $Id: smallft.h,v 1.5 2000/01/05 03:11:02 xiphmont Exp $
17 ********************************************************************/
22 #include "vorbis/codec.h"
24 extern void drft_forward(drft_lookup *l,double *data);
25 extern void drft_backward(drft_lookup *l,double *data);
26 extern void drft_init(drft_lookup *l,int n);
27 extern void drft_clear(drft_lookup *l);