Function calcZeroSum

tests/testfn.h:1269–1280

	-0.1994114689059, &calcMishra04, NULL };

static double calcZeroSum( const double* const x, const int N )
{
	double s = 0.0;
	int i;

	for( i = 0; i < N; i++ )
	{
		s += x[i];
	}

	return( s == 0.0 ? 0.0 : 1.0+pow(10000.0*fabs(s),0.5) );
}

static const CTestFn TestFnZeroSum = { "ZeroSum", 0, -10.0, 10.0, 0.0,
	&calcZeroSum, NULL };