| /* |
| * Copyright (C) 2004-2010 NXP Software |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /********************************************************************************** |
| INCLUDE FILES |
| ***********************************************************************************/ |
| |
| #include "VectorArithmetic.h" |
| #include "LVM_Macros.h" |
| |
| /********************************************************************************** |
| FUNCTION MAC3S_16X16 |
| ***********************************************************************************/ |
| |
| void Mac3s_Sat_32x16( const LVM_INT32 *src, |
| const LVM_INT16 val, |
| LVM_INT32 *dst, |
| LVM_INT16 n) |
| { |
| LVM_INT16 ii; |
| LVM_INT32 srcval,temp, dInVal, dOutVal; |
| |
| |
| for (ii = n; ii != 0; ii--) |
| { |
| srcval=*src; |
| src++; |
| |
| MUL32x16INTO32(srcval,val,temp,15) |
| |
| dInVal = *dst; |
| dOutVal = temp + dInVal; |
| |
| |
| if ((((dOutVal ^ temp) & (dOutVal ^ dInVal)) >> 31)!=0) /* overflow / underflow */ |
| { |
| if(temp<0) |
| { |
| dOutVal=0x80000000L; |
| } |
| else |
| { |
| dOutVal=0x7FFFFFFFL; |
| } |
| } |
| |
| *dst = dOutVal; |
| dst++; |
| } |
| |
| return; |
| } |
| #ifdef BUILD_FLOAT |
| void Mac3s_Sat_Float(const LVM_FLOAT *src, |
| const LVM_FLOAT val, |
| LVM_FLOAT *dst, |
| LVM_INT16 n) |
| { |
| LVM_INT16 ii; |
| LVM_FLOAT srcval; |
| LVM_FLOAT Temp,dInVal; |
| |
| for (ii = n; ii != 0; ii--) |
| { |
| srcval = *src; |
| src++; |
| |
| Temp = srcval * val; |
| |
| dInVal = (LVM_FLOAT)*dst; |
| Temp = Temp + dInVal; |
| |
| if (Temp > 1.000000f) |
| { |
| *dst = 1.000000f; |
| } |
| else if (Temp < -1.000000f) |
| { |
| *dst = -1.000000f; |
| } |
| else |
| { |
| *dst = Temp; |
| } |
| dst++; |
| } |
| |
| return; |
| } |
| #endif |
| /**********************************************************************************/ |
| |
| |
| |