C Library Functions - d2r (3)

NAME

d2r(3f) - [M_pixel:TRIGONOMETRY] convert degrees to radians (LICENSE:PD)

Synopsis
Description
Options
Examples
Author
License

SYNOPSIS

definition:

   elemental real function d2r(degrees)

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

DESCRIPTION

Converts degrees to radians using the formula:
    radians=real(degrees*acos(-1.0d0)/180.d0)

OPTIONS

degrees
any standard scalar value supported by anyscalar_to_real(3f). This includes REAL, INTEGER, DOUBLEPRECISION, ... .

EXAMPLES

Sample program

   program demo_d2r
   use M_pixel, only :  d2r
   implicit none
      write(*,*)’With REAL array input    ’, &
       & d2r([0.0,45.0,90.0,135.0,180.0])
      write(*,*)’With INTEGER array input ’, &
       & d2r([0,  45,  90,  135,  180  ])
      write(*,*)’With DOUBLEPRECISION     ’, &
       & d2r(0.0d0),d2r(45.0d0),d2r(90.0d0),d2r(135.0d0),d2r(180.0d0)
   end program demo_d2r

Results

With REAL array input 0.00000 0.785398185 1.57079637 2.35619450 3.14159274 With INTEGER array input 0.00000 0.785398185 1.57079637 2.35619450 3.14159274 With DOUBLEPRECISION 0.00000 0.785398185 1.57079637 2.35619450 3.14159274

AUTHOR

John S. Urban

LICENSE

Public Domain

Nemo Release 3.1

d2r (3)

February 23, 2025

Generated by manServer 1.08 from 35e86d93-ec2d-4f85-b8ea-a6dda4645c48 using man macros.

degrees
	any standard scalar value supported by anyscalar_to_real(3f). This includes REAL, INTEGER, DOUBLEPRECISION, ... .