Extract and Modify Field in a 32-bit Register

Code

#include <stdio.h>
#include <stdint.h>

uint32_t update_register(uint32_t reg) {
    // Your logic here

    uint32_t mask = 0;
    mask = (( reg >> 10) & 0x1F );
    if( mask < 31 ){
        mask += 1;

    }
    reg &= ~( 0x1F << 10 );
    reg |= ( mask << 10 );
    return reg;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    uint32_t updated = update_register(reg);
    printf("%u", updated);
    return 0;
}

Solving Approach

 

 

 

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Input

15360

Expected Output

16384