2 * Copyright (C) 2004-2010 NXP Software
3 * Copyright (C) 2010 The Android Open Source Project
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #ifndef _LVM_MACROS_H_
19 #define _LVM_MACROS_H_
23 #endif /* __cplusplus */
25 /**********************************************************************************
26 MUL32x32INTO32(A,B,C,ShiftR)
29 A, B and C are all 32 bit SIGNED numbers and ShiftR can vary from 0 to 64
31 The user has to take care that C does not overflow. The result in case
32 of overflow is undefined.
34 ***********************************************************************************/
35 #ifndef MUL32x32INTO32
36 #define MUL32x32INTO32(A,B,C,ShiftR) \
37 {LVM_INT32 MUL32x32INTO32_temp,MUL32x32INTO32_temp2,MUL32x32INTO32_mask,MUL32x32INTO32_HH,MUL32x32INTO32_HL,MUL32x32INTO32_LH,MUL32x32INTO32_LL;\
38 LVM_INT32 shiftValue;\
39 shiftValue = (ShiftR);\
40 MUL32x32INTO32_mask=0x0000FFFF;\
41 MUL32x32INTO32_HH= ((LVM_INT32)((LVM_INT16)((A)>>16))*((LVM_INT16)((B)>>16)) );\
42 MUL32x32INTO32_HL= ((LVM_INT32)((B)&MUL32x32INTO32_mask)*((LVM_INT16)((A)>>16))) ;\
43 MUL32x32INTO32_LH= ((LVM_INT32)((A)&MUL32x32INTO32_mask)*((LVM_INT16)((B)>>16)));\
44 MUL32x32INTO32_LL= (LVM_INT32)((A)&MUL32x32INTO32_mask)*(LVM_INT32)((B)&MUL32x32INTO32_mask);\
45 MUL32x32INTO32_temp= (LVM_INT32)(MUL32x32INTO32_HL&MUL32x32INTO32_mask)+(LVM_INT32)(MUL32x32INTO32_LH&MUL32x32INTO32_mask)+(LVM_INT32)((MUL32x32INTO32_LL>>16)&MUL32x32INTO32_mask);\
46 MUL32x32INTO32_HH= MUL32x32INTO32_HH+(LVM_INT32)(MUL32x32INTO32_HL>>16)+(LVM_INT32)(MUL32x32INTO32_LH>>16)+(LVM_INT32)(MUL32x32INTO32_temp>>16);\
47 MUL32x32INTO32_LL=MUL32x32INTO32_LL+(LVM_INT32)(MUL32x32INTO32_HL<<16)+(LVM_INT32)(MUL32x32INTO32_LH<<16);\
50 MUL32x32INTO32_HH=MUL32x32INTO32_HH<<(32-shiftValue);\
51 MUL32x32INTO32_mask=((LVM_INT32)1<<(32-shiftValue))-1;\
52 MUL32x32INTO32_LL=(MUL32x32INTO32_LL>>shiftValue)&MUL32x32INTO32_mask;\
53 MUL32x32INTO32_temp2=MUL32x32INTO32_HH|MUL32x32INTO32_LL;\
57 MUL32x32INTO32_temp2=(LVM_INT32)MUL32x32INTO32_HH>>(shiftValue-32);\
59 (C) = MUL32x32INTO32_temp2;\
63 /**********************************************************************************
64 MUL32x16INTO32(A,B,C,ShiftR)
67 A and C are 32 bit SIGNED numbers. B is a 16 bit SIGNED number.
68 ShiftR can vary from 0 to 48
70 The user has to take care that C does not overflow. The result in case
71 of overflow is undefined.
73 ***********************************************************************************/
74 #ifndef MUL32x16INTO32
75 #define MUL32x16INTO32(A,B,C,ShiftR) \
76 {LVM_INT32 MUL32x16INTO32_mask,MUL32x16INTO32_HH,MUL32x16INTO32_LL;\
77 LVM_INT32 shiftValue;\
78 shiftValue = (ShiftR);\
79 MUL32x16INTO32_mask=0x0000FFFF;\
80 MUL32x16INTO32_HH= ((LVM_INT32)(B)*((LVM_INT16)((A)>>16)));\
81 MUL32x16INTO32_LL= ((LVM_INT32)((A)&MUL32x16INTO32_mask)*(B));\
84 MUL32x16INTO32_HH=(LVM_INT32)((LVM_UINT32)MUL32x16INTO32_HH<<(16-shiftValue));\
85 (C)=MUL32x16INTO32_HH+(LVM_INT32)(MUL32x16INTO32_LL>>shiftValue);\
87 else if(shiftValue<32) {\
88 MUL32x16INTO32_HH=(LVM_INT32)(MUL32x16INTO32_HH>>(shiftValue-16));\
89 (C)=MUL32x16INTO32_HH+(LVM_INT32)(MUL32x16INTO32_LL>>shiftValue);\
92 (C)=MUL32x16INTO32_HH>>(shiftValue-16);}\
96 /**********************************************************************************
100 A,B and C are 32 bit SIGNED numbers.
101 ***********************************************************************************/
102 #ifndef ADD2_SAT_32x32
103 #define ADD2_SAT_32x32(A,B,C) \
105 if ((((C) ^ (A)) & ((C) ^ (B))) >> 31)\
118 #endif /* __cplusplus */
120 #endif /* _LVM_MACROS_H_ */
122 /*** End of file ******************************************************************/