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Looks like %dec is the winner. Execute the conversion for 10M times and
below are result:
%dec takes 4 secs.
%int takes 12 secs.
atoi takes 9 secs.
Below are coding:
%dec method ==>
D char s 10 inz('12 ')
D num s 10s 0
D myIx s 10s 0
/free
for myIx = 1 to 10000000;
num = %dec(num :10 :0);
endfor;
*inlr = *on;
/end-free
%int method ==>
D char s 10 inz('12 ')
D num s 10i 0
D myIx s 10s 0
/free
for myIx = 1 to 10000000;
num = %int(char);
endfor;
*inlr = *on;
/end-free
Atoi method ==>
H DFTACTGRP(*NO) BNDDIR('QC2LE' :'AHBNDDIR')
D char s 10 inz('12 ')
D num s 10s 0
D myIx s 10s 0
D atoi PR 10i 0 extproc('atoi')
D pValue * value options(*string)
/free
for myIx = 1 to 10000000;
num = atoi(char);
endfor;
*inlr = *on;
/end-free
-----Original Message-----
From: rpg400-l-bounces+lim.hock-chai=usamobility.com@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+lim.hock-chai=usamobility.com@xxxxxxxxxxxx] On
Behalf Of David Gibbs
Sent: Friday, March 02, 2007 10:57 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: char to numeric
Lim Hock-Chai wrote:
I need to write a process that requires converting a 10 chars field in
a file to a numeric field. There are millions of records in this file
and speed is very import for this process. Does any one know of the most speedy way to do this conversion? Note: This char field is left
justified (contains tailing blanks) and could contain all blanks.
atoi?
D atoi PR 10i 0 extproc('atoi')
D pValue * value options(*string)
david
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