Represents a mathematical function in a syntax tree.
static FunctionNode * Create(ExpressionNode *expression, char *text, char *sys)
A logarithm function in a syntax tree.
LogNode(ExpressionNode *expression, char *text, char *sys)
virtual Number * Evaluate()=0
FunctionNode(ExpressionNode *expression, char *text, char *sys)
Base class for all nodes related to mathematical expressions.
virtual Number * Log10()=0
ExpressionNode * expression