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C Library Functions  - acosd (3)

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NAME

acosd(3f) - [M_units:TRIGONOMETRY] calculate arccosine of value in degrees (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Example
Author
License

SYNOPSIS

elemental real function acosd(value)

     class(*),intent(in) :: value

DESCRIPTION

Calculate arcsine of input value in degrees. It converts the input value from degrees to radians and calls acos(3f).

OPTIONS

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

EXAMPLE

Sample program

   program demo_acosd
   use M_units, only :  acosd, cosd
   implicit none
      write(*, *)       cosd(0.0),cosd(45.0),cosd(120.0),cosd(180.0),cosd(720.0)
      write(*, *)acosd([cosd(0.0),cosd(45.0),cosd(120.0),cosd(180.0),cosd(720.0) ])
   end program demo_acosd

Results

      1.00000000      0.707106769     -0.500000000      -1.00000000       1.00000000
      0.00000000       45.0000000       120.000000       180.000000       0.00000000

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

acosd (3)

June 29, 2025

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