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 "VectorArithmetic.h"
23
24/**********************************************************************************
25   FUNCTION ADD2_SAT_16X16
26***********************************************************************************/
27
28void Add2_Sat_16x16( const LVM_INT16 *src,
29                           LVM_INT16 *dst,
30                           LVM_INT16  n )
31{
32    LVM_INT32 Temp;
33    LVM_INT16 ii;
34    for (ii = n; ii != 0; ii--)
35    {
36        Temp = ((LVM_INT32) *src) + ((LVM_INT32) *dst);
37        src++;
38
39        if (Temp > 0x00007FFF)
40        {
41            *dst = 0x7FFF;
42        }
43        else if (Temp < -0x00008000)
44        {
45            *dst = - 0x8000;
46        }
47        else
48        {
49            *dst = (LVM_INT16)Temp;
50        }
51        dst++;
52    }
53    return;
54}
55
56/**********************************************************************************/
57