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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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52
exprtk_simple_example_19.cpp
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@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 19 *
* Author: Arash Partow (1999-2023) *
* 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 *
* *
**************************************************************
*/
@ -38,11 +39,11 @@ public:
randu()
: exprtk::igeneric_function<T>("V|VTT")
/*
Overloads:
0. V - vector
1. VTT - vector, r0, r1
*/
/*
Overloads:
0. V - vector
1. VTT - vector, r0, r1
*/
{ ::srand(static_cast<unsigned int>(time(NULL))); }
inline T operator()(const std::size_t& ps_index, parameter_list_t parameters)
@ -52,10 +53,11 @@ public:
std::size_t r0 = 0;
std::size_t r1 = v.size() - 1;
using namespace exprtk::rtl::vecops::helper;
if (
(1 == ps_index) &&
!exprtk::rtl::vecops::helper::
load_vector_range<T>::process(parameters, r0, r1, 1, 2, 0)
!load_vector_range<T>::process(parameters, r0, r1, 1, 2, 0)
)
return T(0);
@ -85,23 +87,23 @@ void vector_randu()
typedef exprtk::parser<T> parser_t;
const std::string vecrandu_program =
" var noise[6] := [0]; "
" "
" if (randu(noise,0,5) == false) "
" { "
" println('Failed to generate noise'); "
" return [false]; "
" } "
" "
" var noisy[6] := signal + (noise - 1/2); "
" "
" for (var i := 0; i < noisy[]; i += 1) "
" { "
" println('noisy[',i,'] = ', noisy[i]); "
" } "
" "
" println('avg: ', avg(noisy)); "
" ";
" var noise[6] := [0]; "
" "
" if (randu(noise, 0, 5) == false) "
" { "
" println('Failed to generate noise'); "
" return [false]; "
" }; "
" "
" var noisy[noise[]] := signal + (noise - 1/2); "
" "
" for (var i := 0; i < noisy[]; i += 1) "
" { "
" println('noisy[',i,'] = ', noisy[i]); "
" }; "
" "
" println('avg: ', avg(noisy)); "
" ";
T signal[] = { T(1.1), T(2.2), T(3.3), T(4.4), T(5.5), T(6.6), T(7.7) };