C++ (Cpp) numeric::to_int Examples

Example #1

File: inifcns.cpp Project: feelpp/feelpp

static ex binomial_sym(const ex & x, const numeric & y)
{
	if (y.is_integer()) {
		if (y.is_nonneg_integer()) {
			const unsigned N = y.to_int();
			if (N == 0) return _ex1;
			if (N == 1) return x;
			ex t = x.expand();
			for (unsigned i = 2; i <= N; ++i)
				t = (t * (x + i - y - 1)).expand() / i;
			return t;
		} else
			return _ex0;
	}

	return binomial(x, y).hold();
}