headers/private/graphics/radeon/utils.h

   1 /*
   2         Copyright (c) 2002/03, Thomas Kurschel
   3
   4
   5         Part of Radeon accelerant
   6
   7         Utility functions
   8 */
   9
  10 #ifndef _UTILS_H
  11 #define _UTILS_H
  12
  13 #ifdef __cplusplus
  14 extern "C" {
  15 #endif
  16
  17
  18 extern int radeon_log2( uint32 x );
  19
  20 static inline int RoundDiv( int num, int den )
  21 {
  22         return (num + (den / 2)) / den;
  23 }
  24
  25 static inline int32 RoundDiv64( int64 num, int32 den )
  26 {
  27         return (num + (den / 2)) / den;
  28 }
  29
  30 static inline int ceilShiftDiv( int num, int shift )
  31 {
  32         return (num + (1 << shift) - 1) >> shift;
  33 }
  34
  35 static inline int ceilDiv( int num, int den )
  36 {
  37         return (num + den - 1) / den;
  38 }
  39
  40 // macros for fixed-point calculation
  41 #define FIX_SHIFT 32
  42 #define FIX_SCALE (1LL << FIX_SHIFT)
  43
  44 #ifdef __cplusplus
  45 }
  46 #endif
  47
  48 #endif