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

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Arash Partow
2020-01-01 00:00:00 +00:00
parent f32d2b4bbb
commit e67b22afd9
25 changed files with 3701 additions and 1792 deletions
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7
exprtk_simple_example_05.cpp
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@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 5 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2020) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *
@ -18,6 +18,7 @@
#include <cstdio>
#include <string>
#include "exprtk.hpp"
@ -49,7 +50,7 @@ void custom_function()
typedef exprtk::expression<T> expression_t;
typedef exprtk::parser<T> parser_t;
std::string expression_string =
const std::string expression_string =
"myfunc(sin(x / pi), otherfunc(3 * y, x / 2, x * y))";
T x = T(1);
@ -69,7 +70,7 @@ void custom_function()
parser_t parser;
parser.compile(expression_string,expression);
T result = expression.value();
const T result = expression.value();
printf("Result: %10.5f\n",result);
}