#include <fenv.h>
#include <math.h>

/* nearbyint is the same as rint, but it must not raise the inexact exception */

double nearbyint(double x)
{
#ifdef FE_INEXACT
        #pragma STDC FENV_ACCESS ON
        int e;

        e = fetestexcept(FE_INEXACT);
#endif
        x = rint(x);
#ifdef FE_INEXACT
        if (!e)
                feclearexcept(FE_INEXACT);
#endif
        return x;
}