> -----Original Message----- > From: Gene_Gaunt@xxxxxxxxxxxxxxx [mailto:Gene_Gaunt@xxxxxxxxxxxxxxx] > > What's the best way in C code to left circular rotate an integer? > as in: left_rotate( int X = 0x88002300, 2 ) => 0x2008C002 Of course one would use _rtol() or _lrotl(). But wait, they are non-ANSI 'functions' so you probably wont see them on the iSeries, shame about that eh ? Here's the _lrotl() & _rotl() macro definitions; #define _lrotr(x, c) ((((unsigned long)(x)) >> ((int) ((c) & 31))) | (((unsigned long)(x)) << ((int) ((32 - ((c) & 31)))))) #define _rotr(x, c) (unsigned int) _lrotr((unsigned long) x, c) [ NOTE : _lrotr is all one long line ] --phil
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