49 lines
699 B
C
49 lines
699 B
C
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/*
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Copyright (c) 2002/03, Thomas Kurschel
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Part of Radeon accelerant
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Utility functions
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*/
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#ifndef _UTILS_H
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#define _UTILS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int log2( uint32 x );
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static inline int RoundDiv( int num, int den )
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{
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return (num + (den / 2)) / den;
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}
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static inline int32 RoundDiv64( int64 num, int32 den )
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{
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return (num + (den / 2)) / den;
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}
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static inline int ceilShiftDiv( int num, int shift )
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{
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return (num + (1 << shift) - 1) >> shift;
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}
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static inline int ceilDiv( int num, int den )
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{
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return (num + den - 1) / den;
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}
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// macros for fixed-point calculation
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#define FIX_SHIFT 32
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#define FIX_SCALE (1LL << FIX_SHIFT)
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#ifdef __cplusplus
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}
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#endif
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#endif
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