Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    
    //định nghĩa
    uint32_t Value;
    // đọc giá trị của 5 bit 10 -> 14
    uint32_t mask = (((1 << 5) - 1) << 10);
    Value = (reg & mask) >> 10 ;

    if (Value < 31 )
    Value += 1;
    reg = (reg & (~mask)) | ( Value << 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