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

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Arash Partow
2015-03-28 23:21:55 +11:00
parent 73b1e4c9f3
commit 53b2977902
8 changed files with 3861 additions and 2838 deletions
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11
exprtk_simple_example_01.cpp
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@ -24,16 +24,21 @@
template <typename T>
void trig_function()
{
typedef exprtk::symbol_table<T> symbol_table_t;
typedef exprtk::expression<T> expression_t;
typedef exprtk::parser<T> parser_t;
std::string expression_string = "clamp(-1.0,sin(2 * pi * x) + cos(x / 2 * pi),+1.0)";
T x;
exprtk::symbol_table<T> symbol_table;
symbol_table_t symbol_table;
symbol_table.add_variable("x",x);
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.compile(expression_string,expression);
for (x = T(-5); x <= T(+5); x += T(0.001))