PHP Code:
#define id<%1> (1 << (%1 % 31)) // This is the bit mask for a user's ID
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Did you meant something like that ?
PHP Code:
#define MaskEnt(%0) ( 1<<(%0 & 31) )
Dunno if <%1> works for macros, anyway it would be better to name it to something else than 'id'
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