58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* Copyright (c) 1992,1993-1995 by Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: fixed.h 1.17 1995/02/22 21:37:06 sam Exp $
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* $Locker: $
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*/
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#ifndef _FIXED_H_
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#define _FIXED_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef INLINE_FIXED
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#define INLINE_FIXED 1
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#endif
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/*
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* Fixed point types
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*/
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typedef long br_fixed_ls; /* Long Signed fixed 15.16 */
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typedef short br_fixed_lsf; /* Long Signed fraction 0.15 */
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typedef unsigned long br_fixed_lu; /* Long unsigned fixed 16.16 */
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typedef unsigned short br_fixed_luf;/* Long unsigned fixed fraction 0.16 */
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typedef short br_fixed_ss; /* Short Signed fixed 7.8 */
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typedef char br_fixed_ssf; /* Short Signed fraction 0.7 */
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typedef unsigned short br_fixed_su; /* Short unsigned fixed 8.8 */
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typedef unsigned char br_fixed_suf; /* Short unsigned fixed fraction 0.8 */
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/*
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* 1 in various fixed point forms
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*/
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#define BR_ONE_LS (1<<16)
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#define BR_ONE_LSF (1<<15)
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#define BR_ONE_LU (1<<16)
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#define BR_ONE_LUF (1<<16)
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#define BR_ONE_SS (1<<8)
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#define BR_ONE_SSF (1<<7)
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#define BR_ONE_SU (1<<8)
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#define BR_ONE_SUF (1<<8)
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#define BrIntToFixed(i) ((i) << 16)
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#define BrFixedToInt(i) ((i) >> 16)
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#define BrFloatToFixed(f) ((br_scalar)((f)*(float)BR_ONE_LS))
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#define BrFixedToFloat(s) ((s)*(1.0/(float)BR_ONE_LS))
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#ifdef __cplusplus
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};
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#endif
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#endif
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