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1 | /* const.h: Macros for dealing with constants. */ |
2 | |
3 | #ifndef _LINUX_CONST_H |
4 | #define _LINUX_CONST_H |
5 | |
6 | /* Some constant macros are used in both assembler and |
7 | * C code. Therefore we cannot annotate them always with |
8 | * 'UL' and other type specifiers unilaterally. We |
9 | * use the following macros to deal with this. |
10 | * |
11 | * Similarly, _AT() will cast an expression with a type in C, but |
12 | * leave it unchanged in asm. |
13 | */ |
14 | |
15 | #ifdef __ASSEMBLY__ |
16 | #define _AC(X,Y) X |
17 | #define _AT(T,X) X |
18 | #else |
19 | #define __AC(X,Y) (X##Y) |
20 | #define _AC(X,Y) __AC(X,Y) |
21 | #define _AT(T,X) ((T)(X)) |
22 | #endif |
23 | |
24 | #endif /* !(_LINUX_CONST_H) */ |
25 |
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