1 /* Copyright 1996-2018, University Corporation for Atmospheric
2  * Research See netcdf/COPYRIGHT file for copying and redistribution
3  * conditions.
4  *
5  * This header file contains some macros for rounding numbers.
6  *
7  * Glenn Davis, 1996
8  */
9 
10 #ifndef _RND_H
11 #define _RND_H
12 
13 /* useful for aligning memory */
14 #define	_RNDUP(x, unit)  ((((x) + (unit) - 1) / (unit)) \
15 	* (unit))
16 #define	_RNDDOWN(x, unit)  ((x) - ((x)%(unit)))
17 
18 #define M_RND_UNIT	(sizeof(double))
19 #define	M_RNDUP(x) _RNDUP(x, M_RND_UNIT)
20 #define	M_RNDDOWN(x)  __RNDDOWN(x, M_RND_UNIT)
21 
22 #endif /* _RND_H */
23