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 INT32RSHIFTTOINT16_SAT_32X16
26 ***********************************************************************************/
27
Int32RShiftToInt16_Sat_32x16(const LVM_INT32 * src,LVM_INT16 * dst,LVM_INT16 n,LVM_INT16 shift)28 void Int32RShiftToInt16_Sat_32x16(const LVM_INT32 *src,
29 LVM_INT16 *dst,
30 LVM_INT16 n,
31 LVM_INT16 shift )
32 {
33 LVM_INT32 temp;
34 LVM_INT16 ii;
35
36 for (ii = n; ii != 0; ii--)
37 {
38 temp = *src >> shift;
39 src++;
40
41 if (temp > 0x00007FFF)
42 {
43 *dst = 0x7FFF;
44 }
45 else if (temp < -0x00008000)
46 {
47 *dst = - 0x8000;
48 }
49 else
50 {
51 *dst = (LVM_INT16)temp;
52 }
53
54 dst++;
55 }
56
57 return;
58 }
59
60 /**********************************************************************************/
61