A number. More...
#include <qExpr.h>
Inheritance diagram for ibis::math::number:
Public Member Functions | |
| virtual number * | dup () const |
| Make a duplicate copy of the term. | |
| virtual double | eval () const |
| Evaluate the term. | |
| void | invert () |
| To invert the value. | |
| virtual bool | isConstant () const |
| Is this expression a constant? A constant remains the same not matter which row it is applied to. | |
| virtual bool | isTrue () const |
| Should the value be treated as true? This implementation captures the normal case, where an arithmetic expression is treated as 'true' if it is not zero. | |
| void | negate () |
| To negate the value. | |
| virtual uint32_t | nItems () const |
| Count the number of items in the query expression. | |
| number (const char *num) | |
| number (double v) | |
| virtual void | print (std::ostream &out) const |
| Print a human readable version of the expression. | |
| virtual void | printFull (std::ostream &out) const |
| Same as print. | |
| virtual TERM_TYPE | termType () const |
Friends | |
| class | bediener |
| void | ibis::qExpr::simplify (ibis::qExpr *&) |
Detailed Description
A number.
Member Function Documentation
| virtual bool ibis::math::number::isConstant | ( | ) | const [inline, virtual] |
Is this expression a constant? A constant remains the same not matter which row it is applied to.
Reimplemented from ibis::qExpr.
| virtual bool ibis::math::number::isTrue | ( | ) | const [inline, virtual] |
Should the value be treated as true? This implementation captures the normal case, where an arithmetic expression is treated as 'true' if it is not zero.
Reimplemented from ibis::math::term.
The documentation for this class was generated from the following file:
