59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 1992,1993-1995 by Argonaut Technologies Limited. All rights reserved.
|
|
*
|
|
* $Id: fixed.h 2.5 1996/12/06 13:04:01 sam Exp $
|
|
* $Locker: $
|
|
*/
|
|
#ifndef _FIXED_H_
|
|
#define _FIXED_H_
|
|
|
|
#ifndef INLINE_FIXED
|
|
#define INLINE_FIXED 1
|
|
#endif
|
|
|
|
/*
|
|
* Fixed point types
|
|
*/
|
|
typedef long br_fixed_ls; /* Long Signed fixed 15.16 */
|
|
typedef short br_fixed_lsf; /* Long Signed fraction 0.15 */
|
|
|
|
typedef unsigned long br_fixed_lu; /* Long unsigned fixed 16.16 */
|
|
typedef unsigned short br_fixed_luf;/* Long unsigned fixed fraction 0.16 */
|
|
|
|
typedef short br_fixed_ss; /* Short Signed fixed 7.8 */
|
|
|
|
typedef char br_fixed_ssf; /* Short Signed fraction 0.7 */
|
|
|
|
typedef unsigned short br_fixed_su; /* Short unsigned fixed 8.8 */
|
|
typedef unsigned char br_fixed_suf; /* Short unsigned fixed fraction 0.8 */
|
|
|
|
/*
|
|
* 1 in various fixed point forms
|
|
*/
|
|
#define BR_ONE_LS 65536 /* (1<<16) */
|
|
#define BR_ONE_LSF 32768 /* (1<<15) */
|
|
#define BR_ONE_LU 65536 /* (1<<16) */
|
|
#define BR_ONE_LUF 65536 /* (1<<16) */
|
|
|
|
#define BR_ONE_SS 256 /* (1<<8) */
|
|
#define BR_ONE_SSF 128 /* (1<<7) */
|
|
#define BR_ONE_SU 256 /* (1<<8) */
|
|
#define BR_ONE_SUF 256 /* (1<<8) */
|
|
|
|
#define BrIntToFixed(i) ((i) << 16)
|
|
#define BrFixedToInt(i) ((i) >> 16)
|
|
#define BrFloatToFixed(f) ((br_fixed_ls)((f)*(float)BR_ONE_LS))
|
|
#define BrFixedToFloat(s) ((float)((s)*(1.0/(float)BR_ONE_LS)))
|
|
|
|
#define BrFloatToFixedLS(f) ((br_fixed_ls)((f)*(float)BR_ONE_LS))
|
|
#define BrFixedLSToFloat(s) ((float)((s)*(1.0/(float)BR_ONE_LS)))
|
|
|
|
#define BrFixedLSFToFloat(s) ((float)((s)*(1.0/(float)BR_ONE_LSF)))
|
|
#define BrFixedLUFToFloat(s) ((float)((s)*(1.0/(float)BR_ONE_LUF)))
|
|
|
|
#define BrFloatToFixedLSF(f) ((br_fixed_lsf)((f)*(float)BR_ONE_LSF))
|
|
#define BrFloatToFixedLUF(f) ((br_fixed_luf)((f)*(float)BR_ONE_LUF))
|
|
|
|
|
|
#endif
|
|
|