gcc_extensions
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gcc_extensions [2019/07/25 12:41] rpjday [Nonlocal gotos] |
gcc_extensions [2019/07/25 12:52] rpjday [Nonlocal gotos] |
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| Use ''%%__builtin_setjmp%%'' and ''%%__builtin_longjmp%%''. | Use ''%%__builtin_setjmp%%'' and ''%%__builtin_longjmp%%''. | ||
| + | |||
| + | ==== Constructing function calls ==== | ||
| + | |||
| + | ==== typeof ==== | ||
| + | |||
| + | <code> | ||
| + | #define max(a,b) \ | ||
| + | ({ typeof (a) _a = (a); \ | ||
| + | typeof (b) _b = (b); \ | ||
| + | _a > _b ? _a : _b; }) | ||
| + | </code> | ||
| + | |||
| + | ==== Conditionals ==== | ||
| + | |||
| + | Equivalent: | ||
| + | |||
| + | <code> | ||
| + | x ? x : y | ||
| + | x ? : y | ||
| + | </code> | ||
| + | |||
| + | ==== Non-constant initializers ==== | ||
| + | |||
| + | ==== Designated initializers ==== | ||
| + | |||
| + | ==== Case ranges ==== | ||
| + | |||
| + | <code> | ||
| + | case low ... high: | ||
| + | </code> | ||
| + | |||
| + | |||
| + | |||
gcc_extensions.txt ยท Last modified: 2019/07/25 12:53 by rpjday
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