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40 lines
1.2 KiB
40 lines
1.2 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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// $NoKeywords: $ |
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//=============================================================================// |
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#ifndef SND_FIXEDINT_H |
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#define SND_FIXEDINT_H |
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#if defined( _WIN32 ) |
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#pragma once |
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#endif |
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// fixed point stuff for real-time resampling |
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#define FIX_BITS 28 |
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#define FIX_SCALE (1 << FIX_BITS) |
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#define FIX_MASK ((1 << FIX_BITS)-1) |
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#define FIX_FLOAT(a) ((int)((a) * FIX_SCALE)) |
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#define FIX(a) (((int)(a)) << FIX_BITS) |
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#define FIX_INTPART(a) (((int)(a)) >> FIX_BITS) |
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#define FIX_FRACTION(a,b) (FIX(a)/(b)) |
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#define FIX_FRACPART(a) ((a) & FIX_MASK) |
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#define FIX_TODOUBLE(a) ((double)(a) / (double)FIX_SCALE) |
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typedef unsigned int fixedint; |
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#define FIX_BITS14 14 |
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#define FIX_SCALE14 (1 << FIX_BITS14) |
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#define FIX_MASK14 ((1 << FIX_BITS14)-1) |
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#define FIX_FLOAT14(a) ((int)((a) * FIX_SCALE14)) |
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#define FIX14(a) (((int)(a)) << FIX_BITS14) |
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#define FIX_INTPART14(a) (((int)(a)) >> FIX_BITS14) |
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#define FIX_FRACTION14(a,b) (FIX14(a)/(b)) |
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#define FIX_FRACPART14(a) ((a) & FIX_MASK14) |
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#define FIX_14TODOUBLE(a) ((double)(a) / (double)FIX_SCALE14) |
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#define FIX_28TO14(a) ( (int)( ((unsigned int)(a)) >> (FIX_BITS - 14) ) ) |
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#endif // SND_FIXEDINT_H
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