Oracle math

Somebody at Oracle clearly spent a lot of time creating a quad-precision floating package that exploits the 38 digits of the built-in Number type. Pointless, yet impressive.

SQL> select to_char(exp(1)) from dual;

TO_CHAR(EXP(1))
----------------------------------------
2.71828182845904523536028747135266249776

SQL> select to_char(4*atan(1)) from dual;

TO_CHAR(4*ATAN(1))
----------------------------------------
3.14159265358979323846264338327950288422