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

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ArashPartow
2024-01-01 00:00:00 +00:00
committed by Arash Partow
parent f46bffcd69
commit cc1b800c2b
33 changed files with 67415 additions and 54230 deletions
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11
exprtk_simple_example_05.cpp
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@ -2,8 +2,8 @@
**************************************************************
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 5 *
* Author: Arash Partow (1999-2023) *
* Simple Example 05 *
* Author: Arash Partow (1999-2024) *
* URL: https://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *
@ -11,6 +11,7 @@
* permitted under the guidelines and in accordance with the *
* most current version of the MIT License. *
* https://www.opensource.org/licenses/MIT *
* SPDX-License-Identifier: MIT *
* *
**************************************************************
*/
@ -31,14 +32,14 @@ struct myfunc : public exprtk::ifunction<T>
: exprtk::ifunction<T>(2)
{ exprtk::disable_has_side_effects(*this); }
inline T operator()(const T& v1, const T& v2)
T operator()(const T& v1, const T& v2)
{
return T(1) + (v1 * v2) / T(3);
}
};
template <typename T>
inline T myotherfunc(T v0, T v1, T v2)
T myotherfunc(T v0, T v1, T v2)
{
return std::abs(v0 - v1) * v2;
}
@ -51,7 +52,7 @@ void custom_function()
typedef exprtk::parser<T> parser_t;
const std::string expression_string =
"myfunc(sin(x / pi), otherfunc(3 * y, x / 2, x * y))";
"myfunc(sin(x / pi), otherfunc(3 * y, x / 2, x * y))";
T x = T(1);
T y = T(2);