1 /*
2 * Copyright (C) 2004-2010 NXP Software
3 * Copyright (C) 2010 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 /*######################################################################################*/
19 /* Include files */
20 /*######################################################################################*/
21
22 #include "ScalarArithmetic.h"
23
24 /****************************************************************************************
25 * Name : Abs_32()
26 * Input : Signed 32-bit integer
27 * Output :
28 * Returns : Absolute value
29 * Description : Absolute value with maximum negative value corner case
30 * Remarks :
31 ****************************************************************************************/
32
Abs_32(LVM_INT32 input)33 LVM_INT32 Abs_32(LVM_INT32 input)
34 {
35 if(input < 0)
36 {
37 if (input == (LVM_INT32)(0x80000000U))
38 {
39 /* The corner case, so set to the maximum positive value */
40 input=(LVM_INT32) 0x7fffffff;
41 }
42 else
43 {
44 /* Negative input, so invert */
45 input = (LVM_INT32)(-input);
46 }
47 }
48 return input;
49 }
50
51