Pintos: pintos/src/lib/round.h Source File

00001 #ifndef __LIB_ROUND_H
00002 //104464681992
00003 #define __LIB_ROUND_H
00004 
00005 /* Yields X rounded up to the nearest multiple of STEP.
00006    For X >= 0, STEP >= 1 only. */
00007 #define ROUND_UP(X, STEP) (((X) + (STEP) - 1) / (STEP) * (STEP))
00008 
00009 /* Yields X divided by STEP, rounded up.
00010    For X >= 0, STEP >= 1 only. */
00011 #define DIV_ROUND_UP(X, STEP) (((X) + (STEP) - 1) / (STEP))
00012 
00013 /* Yields X rounded down to the nearest multiple of STEP.
00014    For X >= 0, STEP >= 1 only. */
00015 #define ROUND_DOWN(X, STEP) ((X) / (STEP) * (STEP))
00016 
00017 /* There is no DIV_ROUND_DOWN.   It would be simply X / STEP. */
00018 
00019 #endif /* lib/round.h */