Botan: src/utils/rounding.h Source File

Botan 1.10.16

rounding.h
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1 /*
2 * Integer Rounding Functions
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
6 */
7
8 #ifndef BOTAN_ROUNDING_H__
9 #define BOTAN_ROUNDING_H__
10
11 #include <botan/types.h>
12
13 namespace Botan {
14
15 /**
16 * Round up
17 * @param n an integer
18 * @param align_to the alignment boundary
19 * @return n rounded up to a multiple of align_to
20 */
21 template<typename T>
22 inline T round_up(T n, T align_to)
23 {
24 if(n % align_to || n == 0)
25 n += align_to - (n % align_to);
26 return n;
27 }
28
29 /**
30 * Round down
31 * @param n an integer
32 * @param align_to the alignment boundary
33 * @return n rounded down to a multiple of align_to
34 */
35 template<typename T>
36 inline T round_down(T n, T align_to)
37 {
38 return (n - (n % align_to));
39 }
40
41 }
42
43 #endif
Botan::round_down
T round_down(T n, T align_to)
Definition: rounding.h:36
Botan
Definition: algo_base.h:14
Botan::round_up
T round_up(T n, T align_to)
Definition: rounding.h:22