code. compile. run. debug. share.
#include <stdio.h>
int sar (int x, int n) {
int s = -((unsigned) x >> 31); // ensure logical right shift
return (s^x) >> n ^ s;
};
int main(){
int x=-5, n=1;
printf("logical right shift: unsigned(%d) >> %d = %d\n", x, n, (unsigned)x >> n);
printf("builtin right shift: %d >> %d = %d\n", x, n, x >> n);
printf("arithmetic right shift: sar(%d, %d) = %d", x, n, sar(x, n));
return 0;
}
Compiling Program...
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