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C Library Functions  - snum0 (3)

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NAME

snum0(3f) - [M_calculator] resolve a calculator expression into a string(return blank on errors) (LICENSE:PD)

CONTENTS

Synopsis
Description
Examples
Dependencies
See Also
Author
License

SYNOPSIS

function snum0(inline0,ierr)

   character(len=:),allocatable :: snum0(inline0)
   character(len=*),intent(in)  :: inline0
   integer,optional,intent(out) :: ierr

DESCRIPTION

SNUM0() is used to return a string value up to (iclen_calc=512) characters long from a string expression. SNUM0() uses the calculator routine CALCULATOR(3f)

inline0
	INLINE0 is a CHARACTER variable up to (iclen_calc=512) characters long that is similar to a FORTRAN 77 expression.
ierr	error code. If zero, no error occurred

EXAMPLES

Sample program:

    program demo_snum0
    use m_calculator, only: rnum0, snum0
    implicit none
    real              :: rdum
    character(len=80) :: ic,jc,kc

       rdum=rnum0(’A=83/2’) ! set a variable in the calculator
       kc=snum0(’$MYTITLE="This is my title variable"’)

       ic=snum0(’$STR("VALUE IS [",A,"]")’)
       jc=snum0(’$MYTITLE’)

       write(*,*)’IC=’,trim(ic)
       write(*,*)’JC=’,trim(jc)
       write(*,*)’KC=’,trim(kc)

    end program demo_snum0

The output should look like

     IC=VALUE IS [41.5]
     JC=This is my title variable
     KC=This is my title variable

DEPENDENCIES

o	User-supplied routines: All programs that call the calculator routine can supply their own substitute_subroutine(3f) and substitute_C(3f) procedures. See the example program for samples.

SEE ALSO

o	The syntax of an expression is described in the main document of the Calculator Library.
o	See CALCULATOR(), RNUM0(), SNUM0(), STRGAR2(), EXPRESSION().

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

snum0 (3)

February 23, 2025

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