ATAN Function

Description

The ATAN function returns the arctangent of a real number, in radians.

Syntax
                  
ATAN (x)
            

Arguments

x is an INTENT(IN) scalar or array of type REAL.

Result

The result is a REAL representation of the arctangent of x, expressed in radians. The result always falls within the range -Π/2 ≤ x ≤ Π/2.

Example
       real :: a=0.5
       write(*,*) atan(a)  ! writes 0.4636476