Re: [boost] [format] Inconsistency with printf

From: martin.ecker_at_[hidden]
Date: 2005-08-11 04:52:43

Sorry about the previous, empty e-mail. We were having mail server 
problems at my company.
Below is the content of my original mail:

Hello,

The following sample program:

#include <cstdio>
#include <iostream>
#include <limits>
#include <boost/format.hpp>

int main(int argc, char* argv[])
{
        std::cout << boost::format("%f") % std::numeric_limits<float
>::infinity() << std::endl;
        std::printf("%f", std::numeric_limits<float>::infinity());
        return 0;
}

produces
1.00000000000000000000000000....00000000000000000.#INF00
with Boost.Format, but
1.#INF00
with printf.

Is this a bug or shouldn't I expect the same behavior from Boost.Format 
for special floating point values such as NaN and 
infinity?

Note that using %g instead of %f, that is:
std::cout << boost::format("%g") % std::numeric_limits<float>::infinity() 
<< std::endl;
prints the same thing as printf, i.e. 1.#INF00

This is using Boost 1.32.0 with MSVC 7.1 on Windows.

Best Regards,
Martin

TAB Austria
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E-mail: martin.ecker_at_[hidden]
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