XL Fortran for AIX 8.1

Language Reference

ATAN(X)

Arctangent (inverse tangent) function.

X
must be of type real.

Class

Elemental function

Result Type and Attributes

Same as X.

Result Value

Examples

ATAN (1.0) approximates &pi./4.


Specific Name Argument Type Result Type Pass As Arg?
ATAN default real default real yes
DATAN double precision real double precision real yes
QATAN (1) REAL(16) REAL(16) yes

Notes:

  1. IBM Extension.

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