#include <stdio.h>
#include <stdint.h>
int countLeadingSignBits(int32_t data) {
if (data == 0) {
// Special case for 0, which has no sign bit.
return 31;
}
// Determine the value of the most significant bit (MSB)
int32_t msbValue = data < 0 ? 1 : 0;
// Initialize count. Start with -1 since we are looking for MSB-1.
int count = -1;
// Check each bit, starting from the MSB-1 position
for (int i = 31; i >= 0; --i) {
// Check if the current bit matches the MSB value.
if (((data >> i) & 1) == msbValue) {
count++;
} else {
break;
}
}
return count;
}
int main() {
int32_t data = 0b11001101; // Replace with your data
int leadingSignBits = countLeadingSignBits(data);
// Output the result
printf("Number of leading sign bits minus one: %d\n", leadingSignBits);
// If you want to store the result back in data, do so here
data = leadingSignBits;
// Output the modified data
printf("Data is now: %d\n", data);
return 0;
}
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