blob: fdfe6f9a32f6bf61b3c43bb035d46e5ca0dbd358 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/**
* Copyright © 2014 Mattias Andrée (m@maandree.se)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package algorithms.bits;
/**
* Compute the absolute value of an integer
*/
public class Absolute
{
£<for T_S in byte_7 short_15 int_31 long_63; do
T=${T_S%_*}
£>S=${T_S#*_}
/**
* Compute the absolute value of an integer
*
* @param value The integers
* @return The absolute value, the most negative value will because of overflow return the value itself
*/
public static £{T} abs(£{T} value)
{
£{T} mask;
return (£{T})((value ^ (mask = (£{T})(value >> £{S}))) - mask);
/* Or alternatively make the ^ into an +, and the - into a ^.
*/
}
£>done
}
|
