30 lines
612 B
C
30 lines
612 B
C
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#ifndef APFL_INTRINSICS_H
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#define APFL_INTRINSICS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#if defined(__GNUC__) && !defined(APFL_NO_INTRINSICS)
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#define APFL_USE_INTRINSICS
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#endif
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#ifdef APFL_USE_INTRINSICS
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# define MULTIPLY_CHECK_OVERFLOW_SIZE(res, a, b) __builtin_mul_overflow((a), (b), &(res))
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#else
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# define MULTIPLY_CHECK_OVERFLOW_SIZE(res, a, b) \
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( \
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(b) != 0 && (a) > SIZE_MAX / (b) \
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? true \
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: ((res = (a) * (b)), false) \
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)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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