id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3052	math::signbit fails to report -0	tegtmeye@…	John Maddock	"math::signbit fails to report -0. Observed from boost::units, IEEE 754 handling


{{{
#include <boost/math/special_functions/sign.hpp>

#include <iostream>
#include <math.h>

int main(void)
{
  float i=copysign(0.,-1.);
  float j=boost::math::copysign(0.,-1.);
  
  std::cout << ""i: "" << i << "", signbit: "" << std::signbit(i) << ""\n"";
  std::cout << ""j: "" << j << "", signbit: "" << boost::math::signbit(j) << ""\n"";

  return 0;
}
}}}
"	Bugs	closed	Boost 1.40.0	math	Boost 1.38.0	Problem	fixed