Dear All,
I was trying to understand why this code
#include <iostream>
#include <complex>
int main()
{
double a = 0;
double b = 1. / a;
a += 1;
std::cout << std::abs (std::complex<double> (b, a)) << '\n';
}
produce Inf on most platform and NaN on cygwin.
I found that newlib have the function cabs (complex absolute)
but in cygwin the prototypes is
extern double cabs();
so just a placeholder but not a useful function.
There is any reason why cygwin is missing functional
C99 complex functions ?
For what I can see mingw has not such limitation
in /usr/include/mingw/complex.h
double __MINGW_ATTRIB_CONST cabs (double _Complex);
Thanks
Marco
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