// Computation helper methods
public static E replace(E x, E from, E to)
{
if (x is null)
{
throw new ArgumentNullException(nameof(x));
}
if (from.Kind != Expressions.ExpressionKind.Variable)
{
throw new ArgumentException("The parameter " + nameof(from) + " expects an expression of kind variable.");
}
if (to is null)
{
throw new ArgumentNullException(nameof(to));
}
return(x.SubstituteVariables(new Dictionary <string, E> {
{ from.GetName(), to }
}));
}
public static E tan(E x) => M.Tan(x);
// Trigonometric functions public static E sin(E x) => M.Sin(x);
public static E cos(E x) => M.Cos(x);
public static E root(E x, E y) => M.Root(x, y);
public static E pow(E x, E y) => M.Pow(x, y);
public static E ln(E x) => M.Ln(x);
public static E sqrt(E x) => M.Sqrt(x);
public static E exp(E x) => M.Exp(x);
// Mathematic functions public static E abs(E x) => M.Abs(x);
public static Vector4 vec(E x, E y, E z, E w) => new Vector4(x, y, z, w);
public static Vector3 vec(E x, E y, E z) => new Vector3(x, y, z);
// Helper methods for constructing vectors public static Vector2 vec(E x, E y) => new Vector2(x, y);
