| /* |
| * 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" |
| |
| |
| /********************************************************************************** |
| FUNCTION ADD2_SAT_32X32 |
| ***********************************************************************************/ |
| |
| void Add2_Sat_32x32( const LVM_INT32 *src, |
| LVM_INT32 *dst, |
| LVM_INT16 n ) |
| { |
| LVM_INT32 a,b,c; |
| LVM_INT16 ii; |
| for (ii = n; ii != 0; ii--) |
| { |
| a=*src; |
| src++; |
| |
| b=*dst; |
| c=a+b; |
| if ((((c ^ a) & (c ^ b)) >> 31)!=0) /* overflow / underflow */ |
| { |
| if(a<0) |
| { |
| c=0x80000000l; |
| } |
| else |
| { |
| c=0x7FFFFFFFl; |
| } |
| } |
| |
| *dst = c; |
| dst++; |
| } |
| return; |
| } |
| |
| /**********************************************************************************/ |
