Oracle PL/SQL Programming, Third Edition

Name

ATAN2

Synopsis

The ATAN2 function returns the inverse tangent of n/m. The specification for the ATAN2 function is:

FUNCTION ATAN (n NUMBER, m NUMBER) RETURN NUMBER;

where the numbers n and m must be between -infinity and infinity, and the value returned by ATAN is between -π and π. The result of ATAN2(n,m) is defined to be identical to ATAN(n/m).