Manual Reference Pages - tand (3)

NAME

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

Synopsis
Description
Options
Example
Author
License

SYNOPSIS

elemental real function tand(degrees)
    class(*),intent(in) :: degrees

DESCRIPTION

Calculate tangent of input value in degrees

OPTIONS

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

EXAMPLE

Sample program

   program demo_tand
   use M_units, only :  tand
   implicit none
      write(*,*)’With REAL array input    ’, &
        & tand([ 0.0, 15.0, 30.0, 45.0, 60.0, 75.0, 90.0, 180.0, 270.0 ])
      write(*,*)’With INTEGER array input ’, &
        & tand([0,15,30,45,60,75,90,180,270])
      write(*,*)’With DOUBLEPRECISION     ’, &
        & tand(0.0d0),tand(15.0d0),tand(90.0/3.0d0),tand(90.0/2.0d0),&
        & tand(60.0d0),tand(75.0d0),&
        & tand(90.0d0),tand(180.0d0),tand(270.0d0)
   end program demo_tand

Results:

With REAL array input 0.00000000 0.267949194 0.577350259 1.00000000 1.73205078 3.73205090 1.63312395E+16 -1.22464685E-16 5.44374649E+15 With INTEGER array input 0.00000000 0.267949194 0.577350259 1.00000000 1.73205078 3.73205090 1.63312395E+16 -1.22464685E-16 5.44374649E+15 With DOUBLEPRECISION 0.00000000 0.267949194 0.577350259 1.00000000 1.73205078 3.73205090 1.63312395E+16 -1.22464685E-16 5.44374649E+15

Results

AUTHOR

John S. Urban

LICENSE

Public Domain

tand (3)

March 11, 2021

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