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

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Arash Partow
2017-02-14 20:24:11 +11:00
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readme.txt
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@ -853,7 +853,7 @@ Generally an expression in ExprTk can be thought of as a free function
similar to those found in imperative languages. This form of pseudo
function will have a name, it may have a set of one or more inputs and
will return at least one value as its result. Futhermore the function
when invoked, may cause a side-effect that changes the state the of
when invoked, may cause a side-effect that changes the state of the
host program.
As an example the following is a pseudo-code definition of a free
@ -1318,8 +1318,8 @@ in the expression and hence will be assumed to have a side-effect.
During compilation when the DCE optimisation is applied to the above
expression, statement 2 will be removed from the expression, as it has
no bearing on the final result of expression, the rest of the
statements will all remain. Hence optimised version of the expression
is as follows:
statements will all remain. The optimised form of the expression is as
follows:
var x := 2; // Statement 1
var y := x + 2; // Statement 2
@ -1341,7 +1341,7 @@ In the example above, if the condition 'y < z' is true, then the
consequent 'y + 1' will be evaluated, its value will be returned and
subsequently assigned to the variable 'x'. Otherwise the alternative
'2 * z' will be evaluated and its value will be returned. This is
essentially the simplest form of an if-then-else statement, As simple
essentially the simplest form of an if-then-else statement. A simple
variation of the expression where the value of the if-statement is
used within another statement is as follows: