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

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This commit is contained in:
Arash Partow
2014-04-21 20:08:53 +10:00
parent a2d640ed78
commit 86514b460f
6 changed files with 156 additions and 67 deletions
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10
exprtk_simple_example_11.cpp
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@ -24,6 +24,10 @@
template<typename T>
void square_wave2()
{
typedef exprtk::symbol_table<T> symbol_table_t;
typedef exprtk::expression<T> expression_t;
typedef exprtk::parser<T> parser_t;
std::string expr_string = " r := 0; "
" for(i := 0; i < 1000; i += 1) "
" { "
@ -37,16 +41,16 @@ void square_wave2()
T t = T(0);
T a = T(10);
exprtk::symbol_table<T> symbol_table;
symbol_table_t symbol_table;
symbol_table.add_variable("f",f);
symbol_table.add_variable("t",t);
symbol_table.add_variable("a",a);
symbol_table.add_constants();
exprtk::expression<T> expression;
expression_t expression;
expression.register_symbol_table(symbol_table);
exprtk::parser<T> parser;
parser_t parser;
parser.enable_unknown_symbol_resolver();
parser.compile(expr_string,expression);