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C Library Functions  - atan2d (3)

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NAME

atan2d(3f) - [M_units:TRIGONOMETRY] calculate arctangent of the complex number X + i Y (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Example
Author
License

SYNOPSIS

elemental real function atan2d(x,y)

     class(*),intent(in) :: x
     class(*),intent(in) :: y

DESCRIPTION

Calculate arctangent of arctangent of the complex number

      X + i Y.

in degrees. It calls atan2(3f) and converts the output from radians to degrees.

OPTIONS

X	any standard scalar value supported by anyscalar_to_double(3f)
Y	any standard scalar value supported by anyscalar_to_double(3f)

EXAMPLE

Sample program:

          program demo_atan2d
          use M_units, only : atan2d
          real(4) :: x = 1.e0_4, y = 0.5e0_4
            write(*,*)atan2d(y,x)
          end program demo_atan2d

Results:

      26.5650501

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

atan2d (3)

June 29, 2025

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