• lookup.h
  • /********************************************************************
     *                                                                  *
     * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
     * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
     * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
     * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
     *                                                                  *
     * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *
     * by the Xiph.Org Foundation https://xiph.org/                     *
     *                                                                  *
     ********************************************************************
    
      function: lookup based functions
    
     ********************************************************************/
    
    #ifndef _V_LOOKUP_H_
    
    #ifdef FLOAT_LOOKUP
    extern float vorbis_coslook(float a);
    extern float vorbis_invsqlook(float a);
    extern float vorbis_invsq2explook(int a);
    extern float vorbis_fromdBlook(float a);
    #endif
    #ifdef INT_LOOKUP
    extern long vorbis_invsqlook_i(long a,long e);
    extern long vorbis_coslook_i(long a);
    extern float vorbis_fromdBlook_i(long a);
    #endif
    
    #endif