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| 13 | |
13 | |
| 14 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
14 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
| 15 | |
15 | |
| 16 | #if __GNUC__ >= 4 |
16 | #if __GNUC__ >= 4 |
| 17 | # define rxvt_attribute(x) __attribute__(x) |
17 | # define rxvt_attribute(x) __attribute__(x) |
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18 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
| 18 | #else |
19 | #else |
| 19 | # define rxvt_attribute(x) |
20 | # define rxvt_attribute(x) |
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21 | # define expect(expr,value) (expr) |
| 20 | #endif |
22 | #endif |
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23 | |
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24 | // put into ifs if you are very sure that the expression |
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25 | // is mostly true or mosty false. note that these return |
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26 | // booleans, not the expression. |
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27 | #define expect_false(expr) expect ((expr) != 0, 0) |
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28 | #define expect_true(expr) expect ((expr) != 0, 1) |
| 21 | |
29 | |
| 22 | #define NORETURN rxvt_attribute ((noreturn)) |
30 | #define NORETURN rxvt_attribute ((noreturn)) |
| 23 | #define UNUSED rxvt_attribute ((unused)) |
31 | #define UNUSED rxvt_attribute ((unused)) |
| 24 | #define CONST rxvt_attribute ((const)) |
32 | #define CONST rxvt_attribute ((const)) |
| 25 | |
33 | |
