Fix to prevent extrapolation

.github/pull_request_template.md

@@ -0,0 +1,83 @@
+# PR Summary
+
+Code Reviewer: <!-- CR id, filled by SSD -->
+
+<!-- To be completed by the developer -->
+
+<!-- Provide a brief description of the changes in this PR, including any notes
+     useful for reviewers -->
+
+<!-- List any linked PRs here
+- linked MetOffice/<REPO-NAME>#<pr-number>
+-->
+
+<!-- List any blocking PRs or issues to be closed here
+- is blocked-by #pr-number
+- blocks #pr-number
+- closes #issue-number
+- fixes #issue-number
+- is related to #issue-number
+-->
+
+## Code Quality Checklist
+
+(_Some checks are automatically carried out via the CI pipeline_)
+
+- [ ] I have performed a self-review of my own code
+- [ ] My code follows the project's style guidelines
+- [ ] Comments have been included that aid undertanding and enhance the
+      readability of the code
+- [ ] My changes generate no new warnings
+
+## Testing
+
+- [ ] I have tested this change locally, using the rose-stem suite
+- [ ] If any tests fail (rose-stem or CI) the reason is understood and
+      acceptable (eg. kgo changes)
+- [ ] I have added tests to cover new functionality as appropriate (eg. system
+      tests, unit tests, etc.)
+
+<!-- Describe other testing performed (if applicable) -->
+
+### trac.log
+
+<!-- Paste your trac.log from testing output here -->
+
+## Security Considerations
+
+- [ ] This change does not introduce security vulnerabilities
+- [ ] I have reviewed the code for potential security issues
+- [ ] Sensitive data is properly handled (if applicable)
+- [ ] Authentication and authorisation are properly implemented (if applicable)
+
+## Performance Impact
+
+- [ ] Performance of the code has been considered and, if applicable, suitable
+      performance measurements have been conducted
+
+## AI Assistance and Attribution
+
+- [ ] Some of the content of this change has been produced with the assistance
+      of _Generative AI tool name_ (e.g., Met Office Github Copilot Enterprise,
+      Github Copilot Personal, ChatGPT GPT-4, etc) and I have followed the
+      [Simulation Systems AI policy](https://metoffice.github.io/simulation-systems/FurtherDetails/ai.html)(including attribution labels)
+
+<!-- If AI has been used, please provide more details here -->
+
+## Documentation
+
+- [ ] Where appropriate I have updated documentation related to this change and
+      confirmed that it builds correctly
+
+# Code Review
+
+<!-- To be completed by the Code Reviewer -->
+
+- [ ] All dependencies have been resolved
+- [ ] Related Issues have been properly linked and addressed
+- [ ] CLA compliance has been confirmed
+- [ ] Code quality standards have been met
+- [ ] Tests are adequate and have passed
+- [ ] Documentation is complete and accurate
+- [ ] Security considerations have been addressed
+- [ ] Performance impact is acceptable

.github/workflows/check-cr-approved.yaml

@@ -0,0 +1,11 @@
+name: Check CR approved
+
+on:
+    pull_request_review:
+        types: [submitted, edited, dismissed]
+    workflow_dispatch:
+
+jobs:
+    check_cr_approved:
+        if: ${{ github.event.pull_request.number }}
+        uses: MetOffice/growss/.github/workflows/check-cr-approved.yaml@main

.github/workflows/checks.yaml

@@ -0,0 +1,66 @@
+---
+name: Quality
+
+on: # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - main
+      - 'releases/**'
+  pull_request:
+    types: [opened, synchronize, reopened]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
+permissions: read-all
+
+jobs:
+
+  check-shumlib:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v6
+      - name: Install dependencies
+        run: uv sync
+      - name: Fortran
+        # See: fortitude.toml
+        run: |
+          uv run fortitude check --respect-gitignore --show-fixes --statistics .
+      - name: C
+        # See: CPPLINT.cfg
+        if: always()
+        run: |
+          uv run cpplint --recursive --extensions=c,h \
+            --exclude=.git --exclude=.venv .
+
+      # - name: Detect changes in doc
+      #   id: doc_changes
+      #   run: |
+      #     if git diff --name-only ${{ github.sha }} ${{ github.event.before }} | grep '^doc/'; then
+      #       echo "doc_changed=true" >> $GITHUB_OUTPUT
+      #     else
+      #       echo "doc_changed=false" >> $GITHUB_OUTPUT
+      #     fi
+      - name: RestructuredText
+        # if: steps.doc_changes.outputs.doc_changed == 'true'
+        working-directory: ./doc
+        run: uv run sphinx-lint .
+      - name: Link Checks
+        # if: steps.doc_changes.outputs.doc_changed == 'true'
+        working-directory: ./doc
+        run: |
+          uv run sphinx-build -q -b linkcheck \
+            -d _build/doctrees . _build/linkcheck || true
+          echo "== Ignored and Redirected links, if any =="
+          jq -c 'select([.status] | inside(["ignored", "redirected"]))' \
+            _build/linkcheck/output.json
+
+      - name: Minimize uv cache
+        run: uv cache prune --ci

.github/workflows/ci.yaml

@@ -0,0 +1,24 @@
+---
+name: CI
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - main
+      - 'releases/**'
+  pull_request:
+    types: [opened, synchronize, reopened]
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+  build-shumlib:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Build and Test
+        run: |
+          make -f ./make/vm-x86-gfortran-gcc.mk check

.github/workflows/cla-check.yaml

@@ -0,0 +1,10 @@
+name: Legal
+
+on:
+  pull_request_target:
+
+jobs:
+  cla:
+    uses: MetOffice/growss/.github/workflows/cla-check.yaml@main
+    with:
+      runner: 'ubuntu-24.04'

.github/workflows/docs.yaml

@@ -0,0 +1,68 @@
+---
+name: Docs
+
+on: # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - main
+      - 'releases/**'
+  pull_request:
+    types: [opened, synchronize, reopened]
+    paths:
+      - 'doc/**'
+      - '.github/workflows/docs.yaml'
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+
+  build-docs:
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v6
+      - name: Install dependencies
+        run: uv sync
+      - name: Build docs
+        run: uv run make clean html
+        working-directory: ./doc
+      - id: permissions
+        name: Set permissions
+        run: |
+          chmod -c -R +rX "./doc/_build/html/"
+      - name: Upload artifacts
+        uses: actions/upload-pages-artifact@v4
+        with:
+          name: github-pages
+          path: ./doc/_build/html
+      - name: Minimize uv cache
+        run: uv cache prune --ci
+
+  # Deploy job
+  deploy:
+    if: github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
+    # Add a dependency to the build job
+    needs: build-docs
+
+    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
+    permissions:
+      pages: write      # to deploy to Pages
+      id-token: write   # to verify the deployment originates from an appropriate source
+
+    # Deploy to the github-pages environment
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    # Specify runner + deployment step
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4 # or specific "vX.X.X" version tag for this action
+

.github/workflows/track-review-project.yaml

@@ -0,0 +1,17 @@
+name: Track Review Project
+
+on:
+  workflow_run:
+    workflows: [Trigger Review Project]
+    types:
+      - completed
+
+permissions:
+  actions: read
+  contents: read
+  pull-requests: write
+
+jobs:
+  track_review_project:
+    uses: MetOffice/growss/.github/workflows/track-review-project.yaml@main
+    secrets: inherit

.github/workflows/trigger-project-workflow.yaml

@@ -0,0 +1,17 @@
+name: Trigger Review Project
+
+on:
+  pull_request_target:
+    types: ["opened", "synchronize", "reopened", "edited", "review_requested", "review_request_removed", "closed"]
+  pull_request_review:
+  pull_request_review_comment:
+
+permissions:
+  actions: read
+  contents: read
+  pull-requests: write
+
+jobs:
+  trigger_project_workflow:
+    uses: MetOffice/growss/.github/workflows/trigger-project-workflow.yaml@main
+    secrets: inherit

.gitignore

@@ -0,0 +1,54 @@
+# Copied from github c++ template
+
+# Default build directory
+_build/
+build/
+
+# Virtual environment
+.venv/
+uv.lock
+
+# From old svn repository
+*_version_mod.f90
+
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Linker files
+*.ilk
+
+# Debugger Files
+*.pdb
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# debug information files
+*.dwo

.python-version

@@ -0,0 +1 @@
+3.12.11