Re: String to Numeric

[Jim Langston <jlangston@xxxxxxxxxxxxxxxx>]

Actually, before Vini gave me the atoi function which I wound up
using I did it in RPG like this:

Eval  TempString = '00000000000' + %Trim(TestInvOrCtr)
Eval  Position = %Scan(' ': TempString)
Eval  InvoiceStr = %SubSt(TempString: Position - 11: 11)

And InvoiceStr is a member of a Data Structure that is overlaying
InvoiceNo.  Works fine, but the atoi works much better, IMO.

By the time I am trying to do this I have already determined that my
string only contains numbers and spaces by doing a Check.

Doing it this way, if someone put in a string such as '123 456   ' the
program wouldn't bomb with a decimal data error, but would translate
the number as 123.

Looking at your code I am not quite sure what it is doing, to be
honest.  I will have to research the difference between Check and
CheckR(E) and also your use of the SUBST op code.  I try to use
Eval where ever possible, so use the %SubSt expression rather than
the op code.  Also, difference between Move and Move(p).

Regards,

Jim Langston

"Anthony C. Paul" wrote:

> Jim:
>
> I would:
> 1. Scan (from right) the string for non-blanks, getting the length of the
> string.
> 2. Use that length to define a variable length field
> 3. Move the string into the variable length field
> 4. Move the variable length field into a numeric field
>
> You should be able to compile this & step through it so see how it works.
>
> +++++++++++++++++++
>
> d  input_field    s             10
> d  fld_variable   s             10a   varying
> d  numeric_fld    s             10  0
>  *
> c                   move      '1234      '  input_field
> c     ' '           CHECKR(E) input_field   Num               2 0
> c                   eval      %len(fld_variable) = Num
> c     Num           SUBST     input_field:1 fld_variable
> c                   move(p)   fld_variable  numeric_fld
>  *
> c                   seton                                        lr

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