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16 lines
328 B
C
16 lines
328 B
C
/* SPDX-License-Identifier: Zlib */
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#include "checked-integer-arithmetic.h"
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#include <stdint.h>
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#include <limits.h>
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#ifndef HAVE_BUILTIN
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bool
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checked_umul(unsigned int lhs, unsigned int rhs, unsigned int* res)
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{
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const uint64_t r = (uint64_t) lhs * (uint64_t) rhs;
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*res = (unsigned int) r;
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return r > UINT_MAX;
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}
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#endif
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