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#if defined(__GNUC__) && (__GNUC__ >= 5)
#include "uint32.h"
int imult32( int32 a, int32 b, int32* c) { return !__builtin_mul_overflow(a,b,c); }
#include "safemult.h"
int imult32(int32 a,int32 b,int32* c) {
int64 x=(int64)a*b;
if ((int32)x != x) return 0;
return 1;