[jira] [Commented] (SYSTEMML-1373) Inconsistent printing in toString method for Infinity and NaN

["Nakul Jindal (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SYSTEMML-1373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15897925#comment-15897925 ] 

Nakul Jindal commented on SYSTEMML-1373:
----------------------------------------

It turns out that DecimalFormat knowingly prints those characters.
http://stackoverflow.com/questions/5584020/java-decimalformat-returns-a

And that is in fact the correct symbol for infinity :)
But I'll add conditional code to be more compliant with what is already printed out by as.scalar.

> Inconsistent printing in toString method for Infinity and NaN
> -------------------------------------------------------------
>
>                 Key: SYSTEMML-1373
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1373
>             Project: SystemML
>          Issue Type: Bug
>          Components: Runtime
>            Reporter: Niketan Pansare
>            Assignee: Nakul Jindal
>            Priority: Minor
>
> The issue can be reproduced using the following DML script:
> {code}
> X = matrix(seq(1, 9), rows=3, cols=3)
> #X[1,2] = X[1,2] / sum(X == 10)
> X[1,2] = 0 / 0
> for(i in 1:nrow(X)) {
>         print(">" + as.scalar(X[i,1]) + " " + as.scalar(X[i,2]) + " " + as.scalar(X[i,3]))
> }
> print(toString(X))
> {code}
> For NaN, it produces following output:
> {code}
> >1.0 NaN 3.0
> >4.0 5.0 6.0
> >7.0 8.0 9.0
> 1.000 � 3.000
> 4.000 5.000 6.000
> 7.000 8.000 9.000
> {code}
> For Infinity, it produces following output:
> {code}
> >1.0 Infinity 3.0
> >4.0 5.0 6.0
> >7.0 8.0 9.0
> 1.000 ∞ 3.000
> 4.000 5.000 6.000
> 7.000 8.000 9.000
> {code}



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