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FFCx: The FEniCSx Form Compiler

FFCx CISpack installCoverage Status

FFCx is a new version of the FEniCS Form Compiler. It is being actively developed and is compatible with DOLFINx.

FFCx is a compiler for finite element variational forms. From a high-level description of the form in the Unified Form Language (UFL), it generates efficient low-level C code that can be used to assemble the corresponding discrete operator (tensor). In particular, a bilinear form may be assembled into a matrix and a linear form may be assembled into a vector. FFCx may be used either from the command line (by invoking the ffcx command) or as a Python module (import ffcx).

FFCx is part of the FEniCS Project. For more information, visit https://www.fenicsproject.org

Installation

To install FFCx from PyPI:

$ pip install fenics-ffcx

To install FFCx from the source directory:

$ pip install .

Documentation

Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main

Interface file installation only

FFCx provides the ufcx.h interface header for finite element kernels, used by DOLFINx. ufcx.h is installed by FFCx within the Python site packages, but it is sometimes helpful to install only the header file. This can be done using cmake:

$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this program. If not, see https://www.gnu.org/licenses/.

About

Next generation FEniCS Form Compiler for finite element forms

fenicsproject.org

Topics

code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method

Resources

Readme

Code of conduct

Code of conduct
Activity
Custom properties

Stars

192 stars

Watchers

19 watching

Forks

46 forks
Report repository

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
About
Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
Topics
code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
Resources
Readme
Code of conduct
Code of conduct
Activity
Custom properties
Stars
192 stars
Watchers
19 watching
Forks
46 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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FFCx: The FEniCSx Form Compiler
FFCx CISpack installCoverage Status
FFCx is a new version of the FEniCS Form Compiler. It is being actively
developed and is compatible with DOLFINx.
FFCx is a compiler for finite element variational forms. From a
high-level description of the form in the Unified Form Language (UFL),
it generates efficient low-level C code that can be used to assemble the
corresponding discrete operator (tensor). In particular, a bilinear form
may be assembled into a matrix and a linear form may be assembled into a
vector. FFCx may be used either from the command line (by invoking the
ffcx command) or as a Python module (import ffcx).
FFCx is part of the FEniCS Project. For more information, visit
https://www.fenicsproject.org
Installation
To install FFCx from PyPI:
$ pip install fenics-ffcx

To install FFCx from the source directory:
$ pip install .

Documentation
Documentation can be viewed at https://docs.fenicsproject.org/ffcx/main
Interface file installation only
FFCx provides the ufcx.h interface header for finite element kernels,
used by DOLFINx. ufcx.h is installed by FFCx within the Python site
packages, but it is sometimes helpful to install only the header file.
This can be done using cmake:
$ cmake -B build-dir -S cmake/
$ cmake --build build-dir
$ cmake --install build-dir

License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
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Next generation FEniCS Form Compiler for finite element forms
fenicsproject.org
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code-generationfenicsxfinite-element-methodspartial-differential-equationsvariational-method
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