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

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Arash Partow 2018-02-19 15:23:12 +11:00
parent a0bca54c31
commit 33fc79540a
1 changed files with 8 additions and 8 deletions
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@ -2355,11 +2355,11 @@ default be assumed to have side-effects and hence will not participate
in constant folding optimisations. in constant folding optimisations.
In the following example, a two input parameter free function named In the following example, a two input parameter free function named
'compute', and a three input parameter lambda will be registered with 'compute1', and a three input parameter lambda named 'compute2' will
the given symbol_table instance: be registered with the given symbol_table instance:
double compute(double v0, double v1) double compute1(double v0, double v1)
{ {
return 2.0 * v0 + v1 / 3.0; return 2.0 * v0 + v1 / 3.0;
} }
@ -2372,13 +2372,13 @@ the given symbol_table instance:
symbol_table_t symbol_table; symbol_table_t symbol_table;
symbol_table.add_function("compute", compute); symbol_table.add_function("compute1", compute1);
symbol_table.add_function("lambda", symbol_table.add_function(
"compute2",
[](double v0, double v1, double v2) -> double [](double v0, double v1, double v2) -> double
{ return v0 / v1 + v2; }); { return v0 / v1 + v2; });
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[SECTION 16 - EXPRESSION DEPENDENTS] [SECTION 16 - EXPRESSION DEPENDENTS]