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nasmlib.h: Introduce ALIGN helpers

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
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Cyrill Gorcunov 2010-02-11 09:03:51 +03:00
parent 53252e0cc3
commit 89fe355ad0
1 changed files with 7 additions and 0 deletions
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nasmlib.h
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@ -254,6 +254,13 @@ void standard_extension(char *inname, char *outname, char *extension);
for (pos = head, n = (pos ? pos->next : NULL); pos; \ for (pos = head, n = (pos ? pos->next : NULL); pos; \
pos = n, n = (n ? n->next : NULL)) pos = n, n = (n ? n->next : NULL))
/*
* Power of 2 align helpers
*/
#define ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask))
#define ALIGN(v, a) ALIGN_MASK(v, (a) - 1)
#define IS_ALIGNED(v, a) (((v) & ((a) - 1)) == 0)
/* /*
* some handy macros that will probably be of use in more than one * some handy macros that will probably be of use in more than one
* output format: convert integers into little-endian byte packed * output format: convert integers into little-endian byte packed