18 lines
277 B
C
18 lines
277 B
C
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#pragma once
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#include <linux/kernel.h>
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#ifdef CC_HAVE_BUILTIN_OVERFLOW
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#define overflow_usub __builtin_usub_overflow
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#else
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static inline bool overflow_usub(unsigned int a, unsigned int b,
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unsigned int *res)
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{
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*res = a - b;
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return *res > a ? true : false;
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}
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#endif
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