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C Library Functions  - dble (3)

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NAME

dble(3f) - [M_strings:TYPE] overloads DBLE(3f) so it can handle character arguments (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Returns
Examples
Author
License

SYNOPSIS

impure elemental function dble(string)

    character(len=*) :: string
    integer          :: dble

DESCRIPTION

dble(3f) returns a DOUBLE value when given a numeric representation of a numeric value. This overloads the DBLE(3f) intrinsic so that CHARACTER arguments assumed to represent a numeric value may be input.

OPTIONS

STRING	input string to be converted to a dble value

RETURNS

DBLE	double precision value represented by input string

EXAMPLES

Sample program:

     program demo_dble
     use M_strings, only: dble
     implicit none
     write(*,*)dble(’100’),dble(’20.4’)
     write(*,*)’dble still works’,dble(20),dble(20.4)
     write(*,*)’elemental’,&
     & dble([character(len=23) :: ’10’,’20.3’,’20.5’,’20.6’])
     end program demo_dble

Results:

     >    100.00000000000000        20.399999999999999
     >  dble still works   20.000000000000000 20.399999618530273
     >  elemental   10.00000000000000  20.30000000000000
     >  20.50000000000000 20.60000000000000

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

dble (3)

June 29, 2025

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