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#Calculation
is an ActiveX control designed
for VB6/VB.net/VC++/VJ++/VC#.net(perhaps
more in the future). It is a powerful
calculation engine for your
applications. This ActiveX control integrates
expression parsing and evaluating.
Generally speaking, #Calculation
control is useful in two general
areas: first, when a formula has to be defined
and evaluated at runtime (for example, if
the end user is allowed to enter a formula
that will be evaluated and used); second,
when a set of formulas that depend on each
other are defined, configured, and evaluated
at run-time. #Calculation control supports
conventional math operators and functions
and is suitable for heavy-duty number crunching.
It also allows defining variables
and sets of related formulas that implement
spreadsheet-like recalculations.
Even it can support note-line
and custom-functions in your
expression. The powerful calculation ability,
various functions, and the different modes
of work give power and flexibility.
Here
is just a short list of control's
major features: |
- Arithmetic
operation
- Logic and
Bitwise operation
- Relation
operation
- Built-In
Functions
- Constant
support ,such as PI,E,TRUE, FALSE
etc.
- Alias for
operators and functions ,eg."sh"
and "hsin" is the same
function
- Unlimited
nesting for expression
- Auto detect
errors
- Table/Array
operation supprot
- "Simulate
the exact value" operation
- Two kinds
of return value - string and numerical
value
- Upper case
and lower case can be mixedly used
in the expression
- Ansi chars
and some unicode chars can be used
in the expression
- Scientific
notation for numerical value
- Custom
variable support
- Note-line
can be used in the expression you
want to evaluate
- Custom
function can be created by the control
and be used in the expression
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| This
is a demo program to show the
features of #Calculation Control.
Also, it can be used as a Programmable
Calculator. You can get the
Source Code in the #Calculation
Setup Package. |
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