Embedded C Development---Use loops to move left to right

Shift N to the left m-bit int byte_to_left_move (int n, int m) {    int i, ret = 1;    if (n = = 0 | | n < 0)    {        return;        }    if (n = = 1)    {for        (i = 0; i < m; i++)            ret *= n * 2;    }    if (n > 1)    {for        (i = 0; i < m; i++)             ret *= n;        }    return ret;} Shift N to the right m-bit int byte_to_right_move (int n, int m) {    int i, ret = 1;    if (n = = 0 | | n < 0)    {        return;        }    if (n = = 1)    {       ret = 0;     }    if (n > 1)    {for        (i = 0; i < m; i++) {            n/= 2;        }        ret = n;    }    return ret;}

Idle bored, I wrote two API interface, test pass, but may not be perfect, but the initial implementation of a number to the left to move the N-bit algorithm, the algorithm is very simple, is the cycle of multiplication and divide, this time understand, in fact, the basis is very important, such as the beginning of the C language, The teacher teaches the multiplicative and cumulative algorithm, although simple, but still very large, these two APIs also have similar, such as left-shifted interface has the nature of the multiplicative on the inside.

Embedded C Development---Use loops to move left to right