trunc and round function in sql

Question

Is trunc and round the same with negative arguments?

       SQL> select round(123456.76,-4) from dual;

        ROUND(123456.76,-4)
         -------------         


        

Answer 1

ROUND is related to round figure of given value.

TRUNC is related to truncation of given values.

In round case of given example, four places till 4th place prior to decimal point padded with 0.

But in trunc case, four places till 4th place prior to decimal point replacd with 0.