37 lines
778 B
C
37 lines
778 B
C
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#include <stdbool.h>
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/** Define a proposition as likely true.
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* @param prop Proposition
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**/
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#undef likely
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#ifdef __GNUC__
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#define likely(prop) \
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__builtin_expect((prop) ? true : false, true /* likely */)
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#else
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#define likely(prop) \
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(prop)
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#endif
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/** Define a proposition as likely false.
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* @param prop Proposition
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**/
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#undef unlikely
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#ifdef __GNUC__
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#define unlikely(prop) \
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__builtin_expect((prop) ? true : false, false /* unlikely */)
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#else
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#define unlikely(prop) \
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(prop)
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#endif
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/** Define a variable as unused.
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**/
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#undef unused
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#ifdef __GNUC__
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#define unused(variable) \
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variable __attribute__((unused))
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#else
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#define unused(variable)
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#warning This compiler has no support for GCC attributes
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#endif
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