First merge of new psychoacoustics. Have some unused codebooks to
[platform/upstream/libvorbis.git] / lib / os.h
1 #ifndef _OS_H
2 #define _OS_H
3 /********************************************************************
4  *                                                                  *
5  * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE.  *
6  * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
7  * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE.    *
8  * PLEASE READ THESE TERMS DISTRIBUTING.                            *
9  *                                                                  *
10  * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
11  * by Monty <monty@xiph.org> and The XIPHOPHORUS Company            *
12  * http://www.xiph.org/                                             *
13  *                                                                  *
14  ********************************************************************
15
16  function: #ifdef jail to whip a few platforms into the UNIX ideal.
17  last mod: $Id: os.h,v 1.5 2000/05/08 20:49:49 xiphmont Exp $
18
19  ********************************************************************/
20
21 #ifndef _V_IFDEFJAIL_H_
22 #define _V_IFDEFJAIL_H_
23
24 #ifndef M_PI
25 #define M_PI (3.1415926539)
26 #endif
27
28 #ifndef __GNUC__
29 #ifdef _WIN32
30 #  define alloca(x) (_alloca(x))
31 #  define rint(x)   (floor((x)+0.5)) 
32 #endif
33 #endif
34
35 #ifdef _WIN32
36 #  define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b))
37 #else // if not _WIN32
38 #  define FAST_HYPOT hypot
39 #endif
40
41 #endif
42
43 #include "../include/vorbis/os_types.h"
44
45 #endif // _OS_H
46