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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

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Arash Partow
2014-01-05 19:49:26 +11:00
parent 953f3aeaad
commit fd75022a4a
3 changed files with 530 additions and 143 deletions
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24
readme.txt
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@ -392,6 +392,17 @@ include path (e.g: /usr/include/).
| | ~(i := x + 1, j := y / z, k := sin(w/u)) == (sin(w/u))) |
| | ~{i := x + 1; j := y / z; k := sin(w/u)} == (sin(w/u))) |
+----------+---------------------------------------------------------+
| [*] | Evaluate any consequent for which its case statement is |
| | true. The return value will be either zero or the result|
| | of the last consequent to have been evaluated. |
| | eg: |
| | [*] |
| | { |
| | case (x + 1) > (y - 2) : x := z / 2 + sin(y / pi); |
| | case (x + 2) < abs(y + 3): w / 4 + min(5y,9); |
| | case (x + 3) = (y * 4) : y := abs(z / 6) + 7y; |
| | } |
+----------+---------------------------------------------------------+
@ -434,10 +445,13 @@ Expression: z := (x + y^-2.345) * sin(pi / min(w - 7.3,v))
______/ \______ Constant(pi) [Binary-Func(min)]
/ \ ___/ \___
Variable(y) [Negate] / \
| [Subtract] Variable(v)
Constant(2.345) ____/ \___
/ \
Variable(w) Constant(7.3)
| / Variable(v)
Constant(2.345) /
/
[Subtract]
____/ \___
/ \
Variable(w) Constant(7.3)
(3) Parser
A structure which takes as input a string representation of an
@ -565,7 +579,7 @@ correctly optimize such expressions for a given architecture.
(12) Strings may be constructed from any letters, digits or special
characters such as (~!@#$%^&*()[]|=+ ,./?<>;:"`~_), and must
be enclosed with single-quotes.
eg: 'Frankly, my dear, I do not give a damn!'
eg: 'Frankly my dear, I do not give a damn!'
(13) User defined normal functions can have up to 20 parameters,
where as user defined vararg-functions can have an unlimited