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

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Arash Partow
2015-04-28 16:50:54 +10:00
parent e39ec67df9
commit 85c094a1aa
6 changed files with 364 additions and 221 deletions
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10
exprtk_simple_example_08.cpp
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@ -29,6 +29,7 @@ void composite()
typedef exprtk::parser<T> parser_t;
typedef exprtk::parser_error::type error_t;
typedef exprtk::function_compositor<T> compositor_t;
typedef typename compositor_t::function function_t;
compositor_t compositor;
@ -40,8 +41,13 @@ void composite()
symbol_table.add_variable("x",x);
symbol_table.add_variable("y",y);
compositor.add("f","sin(x / pi)","x"); // f(x) = sin(x / pi)
compositor.add("g","3*[f(x) + f(y)]","x","y"); // g(x,y) = 3[f(x) + f(y)]
compositor
.add(
function_t("f","sin(x / pi)","x")); // f(x) = sin(x / pi)
compositor
.add(
function_t("g","3*[f(x) + f(y)]","x","y")); // g(x,y) = 3[f(x) + f(y)]
std::string expression_string = "g(1 + f(x),f(y) / 2)";