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19 lines
340 B
C
19 lines
340 B
C
#if defined(__GNUC__) && (__GNUC__ >= 5)
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#include "uint32.h"
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int umult32(uint32 a,uint32 b,uint32* c) { return !__builtin_mul_overflow(a,b,c); }
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#else
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#include "safemult.h"
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int umult32(uint32 a,uint32 b,uint32* c) {
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unsigned long long x=(unsigned long long)a*b;
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if (x>0xffffffff) return 0;
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*c=x&0xffffffff;
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return 1;
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}
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#endif
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