Neoview SQL Reference Manual (R2.4 SP2)

ATAN Function
The ATAN function returns the arctangent of a numeric value expression as an angle expressed
in radians.
ATAN is a Neoview SQL extension.
ATAN (numeric-expression)
numeric-expression
is an SQL numeric value expression that specifies the value for the argument of the ATAN
function. See “Numeric Value Expressions” (page 253).
Examples of ATAN
• This function returns the value 8.72766423249958272E-001 or approximately 0.8727 in radians
(which is 50 degrees):
ATAN (1.192)
• This function returns the value 0.8727. The function ATAN is the inverse of the function
TAN.
ATAN (TAN (0.8727))
ATAN Function 337