Double Conversion

[peteut]

There is a problem w/ the double conversion if TOTAL_WIDTH and FRACTION_WIDTH is equal and Fi::SIGNED. Considering

#include "fi/Fixed.hpp"
#include "fi/overflow/Wrap.hpp"

//#include <boost/shared_ptr.hpp>

int main(int argc, char* argv[]) {

    const double val(0.1);

    Fi::Fixed<16, 16, Fi::SIGNED> a(val);
    Fi::Fixed<16, 15, Fi::SIGNED> b(val);
    Fi::Fixed<16, 16, Fi::SIGNED> c("0.1");

    std::cout << "Fi::Fixed<16, 16, Fi::SIGNED> a(0.1) does not work: "
        << a << std::endl;
    std::cout << "Fi::Fixed<16, 15, Fi::SIGNED> b(0.1) works: "
        << b << std::endl;
    std::cout << "Fi::Fixed<16, 16, Fi::SIGNED> c(\"0.1\") works: "
        << c << std::endl;

    return 0;
}

yields

Fi::Fixed<16, 16, Fi::SIGNED> a(0.1) does not work: -0.100006103515625
Fi::Fixed<16, 15, Fi::SIGNED> b(0.1) works: 0.0999755859375
Fi::Fixed<16, 16, Fi::SIGNED> c("0.1") works: 0.0999908447265625

I'm using GCC 4.7.2 and Boost 1.57.0.

[gsarkis]

Thanks for finding this bug.