||An object of type Cases stores a list of "case values" that is generated
while an expression is being evaluated using the routine Expression.getValuesWithCases().
||A "conditional expression" is an expression using the "?" operator, such as "(x > 0)? x : -x"
or "x <> 3 ? 1 / (x - 3)".
||A Constant is a Value that represents a constant real number.
||An ExprssionProgram represents a mathematical expression such as "3" or "sin(x^2)", stored
in the form of a program for a stack machine.
||This class provides a few static functions for converting real numbers
to strings and strings to real numbers.
||A Parser can take a string and compile it into an ExpressionProgram.
||A ParserContext holds all the state data for a parsing operation, including the
string that is being parsed, a pointer to the current position in that string,
and the most recently parsed token from the string.
||An object belonging to this class is a function of one or more variables.
||A standard stack of values of type double, which can grow to arbitrary size.
||This class exists to associate standard functions, such as sin and abs, with
||A symbol table contains MathObjects, associating them
with their names.
||A ValueMath object is an easy way to create Value objects that are computed
from other Value objects.
||A Variable is a Value object whose value can be changed.