llvm dev - Nov 2015 - Need help with windows build error and std::to_string

Thanks. I

On Sat, Nov 28, 2015 at 11:44 AM, Benjamin Kramer <benny.kra at gmail.com>
wrote:
> On Sat, Nov 28, 2015 at 5:14 PM, Diego Novillo via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> >
> > I need to build a Twine with a double value, so I was using
> std::to_string,
> > but I'm getting "error: 'to_string' is not a member
of 'std'" from a
> windows
> > buildbot.  What's the canonical way to create a Twine() out of a
double?
>
> via raw_ostream. Create a new raw_string_ostream or
> raw_svector_ostream, << the double into it and take the string. I
> don't think we have a more convenient way for that currently and
> to_string is still not universally available.
>
Thanks.  I suppose there's no easy way to format them?  I tried the
standard io manipulators, but they don't seem to be supported in raw
streams.  By default double values are emitted in scientific notation. I
need to format them as percentage values.
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On Sat, Nov 28, 2015 at 11:03 PM, Diego Novillo <dnovillo at google.com>
wrote:
> Thanks. I
>
> On Sat, Nov 28, 2015 at 11:44 AM, Benjamin Kramer <benny.kra at
gmail.com>
> wrote:
>>
>> On Sat, Nov 28, 2015 at 5:14 PM, Diego Novillo via llvm-dev
>> <llvm-dev at lists.llvm.org> wrote:
>> >
>> > I need to build a Twine with a double value, so I was using
>> > std::to_string,
>> > but I'm getting "error: 'to_string' is not a
member of 'std'" from a
>> > windows
>> > buildbot.  What's the canonical way to create a Twine() out of
a double?
>>
>> via raw_ostream. Create a new raw_string_ostream or
>> raw_svector_ostream, << the double into it and take the string. I
>> don't think we have a more convenient way for that currently and
>> to_string is still not universally available.
>
>
> Thanks.  I suppose there's no easy way to format them?  I tried the
standard
> io manipulators, but they don't seem to be supported in raw streams. 
By
> default double values are emitted in scientific notation. I need to format
> them as percentage values.
OS << format("%.2f", foo), takes a printf format string.

- Ben

On Sat, Nov 28, 2015 at 5:10 PM, Benjamin Kramer <benny.kra at gmail.com>
wrote:

> OS << format("%.2f", foo), takes a printf format string.
>
>
Thanks!  That worked just fine.
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