Dominique Pellé wrote:
> I found more unexpected results of printf() with
> float infinity and float nan (not a number) values
> using Vim-7.4.2275:
>
> :echo printf('%+f', 1.0/0.0)
> Expected: '+inf'
> Actual: 'inf'
>
> :echo printf('% f', 1.0/0.0)
> Expected: ' inf'
> Actual: 'inf'
>
> :echo printf('%+06f', 1.0/0.0)
> Expected: ' +inf'
> Actual: '000inf'
>
> :echo printf('%G', 0.0/0.0)
> Expected: 'NAN'
> Actual: '-NAN'
>
> :echo printf('%6f', 0.0/0.0)
> Expected: ' nan'
> Actual: ' nan'
>
> :echo printf('%06f', 0.0/0.0)
> Expected: ' nan'
> Actual: '00nan'
>
> Code in Vim-7.4.2275 was also using isinf(f) == -1
> which I don't think was portable as man isinf states:
>
> === BEGIN QUOTE man isinf ===
> For isinf(), the standards merely say that the return value
> is nonzero if and only if the argument has an infinite value.
> === END QUOTE ===
>
> Attached patch fixes all those problems, and adds the
> test cases to src/testdir/test_expr.vim. I could only test
> it on Linux.
>
> But there are remaining problems which I have not been
> able to fix yet (they exist prior to my patch, so they are not
> introduced by my patch):
>
> :echo printf('%06.2f', -1.0/3.0)
> Expected: '000.33'
> Actual: '0-0.33'
>
> :echo printf('%+06.2f', 1.0/3.0)
> Expected: '+00.33'
> Actual: '000.33'
>
> :echo printf('% 06.2f', 1.0/3.0)
> Expected: ' 00.33'
> Actual: '000.33'
>
> I added test cases for the remaining problems too, but they are
> commented out as they currently fail.
Thanks, I'll include it.
I hope you can fix the remaining problems too.
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