Represents a mathematical function in a syntax tree.
TruncNode(ExpressionNode *expression, char *text, char *sys)
A truncation function in a syntax tree.
virtual Number * Evaluate()=0
FunctionNode(ExpressionNode *expression, char *text, char *sys)
virtual Number * Trunc()=0
Base class for all nodes related to mathematical expressions.
static FunctionNode * Create(ExpressionNode *expression, char *text, char *sys)
ExpressionNode * expression