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| author | Max Horn | 2009-03-19 21:43:27 +0000 |
|---|---|---|
| committer | Max Horn | 2009-03-19 21:43:27 +0000 |
| commit | e59b4587b706bb91b7875b4675cfdcdf68ae493c (patch) | |
| tree | 1a77d3e46c254f9e6298dfaac1768b21093ed3f8 /common | |
| parent | 428b0ec80023361b7079759b5767647d1024be57 (diff) | |
| download | scummvm-rg350-e59b4587b706bb91b7875b4675cfdcdf68ae493c.tar.gz scummvm-rg350-e59b4587b706bb91b7875b4675cfdcdf68ae493c.tar.bz2 scummvm-rg350-e59b4587b706bb91b7875b4675cfdcdf68ae493c.zip | |
COMMON: Added a new IS_ALIGNED macro (for now using size_t, we can change it if this turns out to be not portable enough. Also added a doxygen comment to the ARRAYSIZE macro
svn-id: r39542
Diffstat (limited to 'common')
| -rw-r--r-- | common/util.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/common/util.h b/common/util.h index 18f1b70c52..3b2a705d6c 100644 --- a/common/util.h +++ b/common/util.h @@ -28,6 +28,15 @@ #include "common/scummsys.h" #include "common/str.h" + +/** + * Check whether a given pointer is aligned correctly. + * Note that 'alignment' must be a power of two! + */ +#define IS_ALIGNED(value, alignment) \ + ((((size_t)value) & ((alignment) - 1)) == 0) + + #ifdef MIN #undef MIN #endif @@ -47,6 +56,9 @@ template<typename T> inline T CLIP (T v, T amin, T amax) */ template<typename T> inline void SWAP(T &a, T &b) { T tmp = a; a = b; b = tmp; } +/** + * Macro which determines the number of entries in a fixed size array. + */ #define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0]))) |