Barbara, even though the comment I'd insert into the program to explain
(to myself) what's going on would probably be longer than your 3
instructions, that's still one beautiful, elegant formula. Thank you,
dear.
num = %DEC(string : 63 : 31) * %INTH(10 ** decpos);
val = %EDITC(num : 'X');
val = %subst(val : NUM_LEN - len + 1);
Arthur J. Marino
RockTenn Corporation
(631) 297-2276
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Barbara Morris
Sent: Thursday, March 26, 2009 6:53 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Using an Expression to control a FOR loop
Arthur Marino wrote:
Speaking of negative numbers, as I've explained earlier, I'm reading
columns in a .csv file, which can contain a leading minus sign (and,
optionally, a decimal point). Then I'm building a character string
that
conforms to the output file's DDS. So I handled the negative value in
the 'coldta' string by purging the decimal point and minus sign, and
then substituting J, K, L, etc. for the last 'digit' before appending
'coldta' to the string.
Can anyone tell me how I could just alter the sign portion of the last
byte to denote 'negative' so I wouldn't need the alternating tables?
The %DEC built-in function will take a string like '-123.45' and return
a numeric value. If you multiply it by 10 to the power of your decimal
places, you'll get a zero-decpos value with the same zoned-decimal data.
If you then use %EDITC 'X' on the zero-decpos value and then
substring, you'll get the result you want.
D len s 10i 0
D decpos s 10i 0
D string s 50a varying
D num s 63S 0
D val s 63A varying
D NUM_LEN c %len(num)
len = 5;
decpos = 0;
string = '-12345';
num = %DEC(string : 63 : 31) * %INTH(10 ** decpos);
val = %EDITC(num : 'X');
val = %subst(val : NUM_LEN - len + 1);
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