Thread: Get Exponent of Float

Hello,
Is there a way to get the exponent of a number without using shift and mask operators.

I can remove the mantissa using division which is equivalent to shifting,
but I am stuck at masking.

Code:

static const int32_t getExponent(uint32_t binary) {
    
    //Shifting
    printf("Exponent = %d\n", ((binary >> 23) & 255) - 127);
    printf("Shift = %d\n", binary >> 23);
    
    // binary = binary / 0b100000000000000000000000
    binary = binary / 8388608;
    printf("Shift by Division = %d\n", binary);
    
    //Masking
    int32_t i = 8, e = 1;
    while (--i) {
        e *= 2;
        if (binary % 2 == 1) {
            ++e;
        }
        binary /= 2;
    }
    return e;
}
int main(int argc, const char *argv[]) {
    const float i = 263.3;
    printf("# result = %d\n", getExponent(*(uint32_t *)&i));
    return 0;
}