| … | |
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| 33 | # define is_constant(c) 0 |
33 | # define is_constant(c) 0 |
| 34 | # define expect(expr,value) (expr) |
34 | # define expect(expr,value) (expr) |
| 35 | # define prefetch(addr,rw,locality) |
35 | # define prefetch(addr,rw,locality) |
| 36 | #endif |
36 | #endif |
| 37 | |
37 | |
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38 | #if __GNUC__ < 4 || (__GNUC__ == 4 || __GNUC_MINOR__ < 4) |
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39 | # define decltype(x) typeof(x) |
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40 | #endif |
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41 | |
| 38 | // put into ifs if you are very sure that the expression |
42 | // put into ifs if you are very sure that the expression |
| 39 | // is mostly true or mosty false. note that these return |
43 | // is mostly true or mosty false. note that these return |
| 40 | // booleans, not the expression. |
44 | // booleans, not the expression. |
| 41 | #define expect_false(expr) expect ((expr) != 0, 0) |
45 | #define expect_false(expr) expect ((expr) != 0, 0) |
| 42 | #define expect_true(expr) expect ((expr) != 0, 1) |
46 | #define expect_true(expr) expect ((expr) != 0, 1) |
| … | |
… | |
| 50 | |
54 | |
| 51 | #include <shstr.h> |
55 | #include <shstr.h> |
| 52 | #include <traits.h> |
56 | #include <traits.h> |
| 53 | |
57 | |
| 54 | // use a gcc extension for auto declarations until ISO C++ sanctifies them |
58 | // use a gcc extension for auto declarations until ISO C++ sanctifies them |
| 55 | #define auto(var,expr) typeof(expr) var = (expr) |
59 | #define auto(var,expr) decltype(expr) var = (expr) |
| 56 | |
60 | |
| 57 | // very ugly macro that basicaly declares and initialises a variable |
61 | // very ugly macro that basicaly declares and initialises a variable |
| 58 | // that is in scope for the next statement only |
62 | // that is in scope for the next statement only |
| 59 | // works only for stuff that can be assigned 0 and converts to false |
63 | // works only for stuff that can be assigned 0 and converts to false |
| 60 | // (note: works great for pointers) |
64 | // (note: works great for pointers) |
