lookup.h (1249B)
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 https://xiph.org/ * 10 * * 11 ******************************************************************** 12 13 function: lookup based functions 14 15 ********************************************************************/ 16 17 #ifndef _V_LOOKUP_H_ 18 19 #ifdef FLOAT_LOOKUP 20 extern float vorbis_coslook(float a); 21 extern float vorbis_invsqlook(float a); 22 extern float vorbis_invsq2explook(int a); 23 extern float vorbis_fromdBlook(float a); 24 #endif 25 #ifdef INT_LOOKUP 26 extern long vorbis_invsqlook_i(long a,long e); 27 extern long vorbis_coslook_i(long a); 28 extern float vorbis_fromdBlook_i(long a); 29 #endif 30 31 #endif