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
33LVM_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