release/src/router/libvorbis/lib/lookup.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
   5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
   6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
   7  *                                                                  *
   8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *
   9  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13   function: lookup based functions
  14   last mod: $Id: lookup.h 16227 2009-07-08 06:58:46Z xiphmont $
  15
  16  ********************************************************************/
  17
  18 #ifndef _V_LOOKUP_H_
  19
  20 #ifdef FLOAT_LOOKUP
  21 extern float vorbis_coslook(float a);
  22 extern float vorbis_invsqlook(float a);
  23 extern float vorbis_invsq2explook(int a);
  24 extern float vorbis_fromdBlook(float a);
  25 #endif
  26 #ifdef INT_LOOKUP
  27 extern long vorbis_invsqlook_i(long a,long e);
  28 extern long vorbis_coslook_i(long a);
  29 extern float vorbis_fromdBlook_i(long a);
  30 #endif
  31
  32 #endif