Evaluate a computed variable's expression with values for its names
(engine#220): the grammar the validator checks (E-VAR-EXPR), parsed by
the same parser. Returns the IEEE result, so a division by zero gives
Infinity or NaN rather than an exception. Throws when the
expression does not parse (the message names the parse error, as
E-VAR-EXPR does) or uses a name without a value.
Evaluate a computed variable's expression with
valuesfor its names (engine#220): the grammar the validator checks (E-VAR-EXPR), parsed by the same parser. Returns the IEEE result, so a division by zero givesInfinityorNaNrather than an exception. Throws when the expression does not parse (the message names the parse error, asE-VAR-EXPRdoes) or uses a name without a value.