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‎en/README.md‎

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![banner](banner_homepage.png)
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### Nelson 0.6.2.0
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### Nelson 0.6.3.0
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This is an pre-release of Nelson.
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‎en/SUMMARY.md‎

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* [exist](./core/exist.md)
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* [exit](./core/exit.md)
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* [inputname](./core/inputname.md)
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* [isunicodesupported](./core/isunicodesupported.md)
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* [license](./core/license.md)
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* [maxNumCompThreads](./core/maxNumCompThreads.md)
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* [namelengthmax](./core/namelengthmax.md)
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* [fwrite](./stream_manager/fwrite.md)
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* [load](./stream_manager/load.md)
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* [save](./stream_manager/save.md)
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* [sscanf](./stream_manager/sscanf.md)
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* [display_format](./display_format/README.md)
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* [console](./console/README.md)
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* [clc](./console/clc.md)
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* [input](./console/input.md)
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* [terminal_size](./console/terminal_size.md)
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* [gui](./gui/README.md)

‎en/changelogs/CHANGELOG.md‎

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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
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## 0.6.3 (2022-03-26)
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### Changed
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- [#596](http://github.com/Nelson-numerical-software/nelson/issues/596): Tests results display use emoji if terminal supports Unicode.
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### Added
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- Packaging:
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- [#603](http://github.com/Nelson-numerical-software/nelson/issues/603): Nelson as snap package for Linux.
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- [#605](http://github.com/Nelson-numerical-software/nelson/issues/605): [Package request] Chocolatey package manager for Windows.
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- [#582](http://github.com/Nelson-numerical-software/nelson/issues/582): Nelson available as Portable apps.
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- add information for Software Center (Linux desktop, icons).
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- `nelson` Main script to start Nelson (superceed others scripts).
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- `isunicodesupported` function: Detect whether the current terminal supports Unicode.
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- `dlsym` function: search nearest symbol name if value entry is not found.
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- `terminal_size` function:Query the size of the terminal window.
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- [#598](http://github.com/Nelson-numerical-software/nelson/issues/598): `sscanf` function read formatted data from strings.
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### Fixed
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- [#599](http://github.com/Nelson-numerical-software/nelson/issues/599): `make install` step in CI for linux and MacOs.
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- [#601](http://github.com/Nelson-numerical-software/nelson/issues/601): embed all tests on linux and macos install.
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## 0.6.2 (2022-02-26)
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- [#576](http://github.com/Nelson-numerical-software/nelson/issues/575): C++17 Compiler required to build Nelson.
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- [#576](http://github.com/Nelson-numerical-software/nelson/issues/576): C++17 Compiler required to build Nelson.
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- [#581](http://github.com/Nelson-numerical-software/nelson/issues/581): Github CI platforms list extended (ArchLinux, Fedora, Ubuntu 18.04, MacOs BigSur).
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‎en/console/README.md‎

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* [clc](clc.md) - Clear Command Window.
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* [input](input.md) - Display prompt and wait for user input.
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* [terminal_size](terminal_size.md) - Query the size of the terminal window.
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‎en/console/SUMMARY.md‎

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* [console](README.md)
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* [clc](clc.md)
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* [input](input.md)
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* [terminal_size](terminal_size.md)
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‎en/console/terminal_size.md‎

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# terminal_size
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Query the size of the terminal window.
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## Syntax
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- [r, c] = terminal_size()
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## Output argument
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- [r, c] - a vector: rows and columns
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## Description
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<p><b>terminal_size()</b> returns a vector with size of the terminal window in characters (rows and columns).</p>
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## Example
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```matlab
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terminal_size()
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```
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## See also
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[disp](../display_format/disp.md).
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## History
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|Version|Description|
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|------|------|
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|1.0.0|initial version|
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## Author
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Allan CORNET
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‎en/core/README.md‎

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* [exist](exist.md) - Check for the existence.
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* [exit](exit.md) - Exit from current Nelson application
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* [inputname](inputname.md) - Get variable name of function input.
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* [isunicodesupported](isunicodesupported.md) - Detect whether the current terminal supports Unicode.
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* [license](license.md) - Get license information for Nelson.
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* [maxNumCompThreads](maxNumCompThreads.md) - Set/Get maximum number of computional threads.
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* [namelengthmax](namelengthmax.md) - Return the maximum variable name length.

‎en/core/SUMMARY.md‎

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* [exist](exist.md)
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* [exit](exit.md)
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* [inputname](inputname.md)
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* [isunicodesupported](isunicodesupported.md)
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* [license](license.md)
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* [maxNumCompThreads](maxNumCompThreads.md)
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* [namelengthmax](namelengthmax.md)

‎en/core/isunicodesupported.md‎

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# isunicodesupported
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Detect whether the current terminal supports Unicode.
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## Syntax
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- tf = isunicodesupported()
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## Output argument
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- tf - a logical: true or false.
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## Description
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<p><b>isunicodesupported</b>: returns if current terminal supports Unicode.</p>
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<p>value returned can be overloaded if environment variable 'NELSON_TERM_IS_UNICODE_SUPPORTED' is 'TRUE'</p>
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## Example
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```matlab
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isunicodesupported()
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```
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## See also
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[getnelsonmode](../engine/getnelsonmode.md).
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## History
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|Version|Description|
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|------|------|
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|1.0.0|initial version|
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## Author
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Allan CORNET
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‎en/dynamic_link/dlsym.md‎

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## Input argument
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- lib - a dllib handle.
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- symbol_name - a string: symbol to load.
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- symbolname - a string: symbol to load.
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- return_type - a string: return type of the C/Fortran function.
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- params_types - a cell of strings: arguments using a special syntax with differents data types.
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<p><b>dlsym</b> retrieves the address of an exported function as an dlsym handle.</p>
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<p>if <b>symbolname</b> not found, nelson try to find symbol equivalent based on these rules and in this order:</p>
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<p>
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<b>_symbolname</b>
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</p>
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<p>
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<b>symbolname</b>
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</p>
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<p>
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<b>symbolname_</b>
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</p>
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<p>
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<b>_symbolname_</b>
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</p>
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<p>
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<b>_SYMBOLNAME</b>
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</p>
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<p>
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<b>SYMBOLNAME</b>
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</p>
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<p>
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<b>SYMBOLNAME_</b>
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</p>
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<p>
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<b>_SYMBOLNAME_</b>
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</p>
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<p>symbol name used is available in prototype field of the returned handle.</p>
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<p>If multiple symbol names found, an error is raised with possible names.</p>
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<p/>
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<p>Warning: Uses wrong datatype definitions a foreign function can terminate unexpectedly.</p>
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