Add user option for column-major rank assignment. #25

	name: "Code Format"

	on:
	pull_request:
	branches: [ main ]

	jobs:
	clang-format:
	env:
	CLANG_FORMAT_VERSION: "15"

	runs-on: ubuntu-latest
	name: "clang-format check"

	steps:
	- name: "Checkout code"
	uses: actions/checkout@v4

	- name: "Install dependencies"
	run: \|
	# Install clang-format
	sudo apt-get update && sudo apt-get install -y clang-format-${CLANG_FORMAT_VERSION}

	# Print clang-format version information
	clang-format-${CLANG_FORMAT_VERSION} --version

	- name: "Run clang-format check"
	run: \|
	# Collect names of files that are not properly formatted
	filelist=`find src include examples -name ".cc" -o -name ".cu" -o -name ".h" -o -name ".cuh"`
	files_to_fix=()
	for file in $filelist; do
	if ! clang-format-${CLANG_FORMAT_VERSION} --dry-run --Werror "$file" 2>/dev/null; then
	files_to_fix+=("$file")
	fi
	done

	# If any file is not properly formatted, print diff and exit with error
	if [ ${#files_to_fix[@]} -gt 0 ]; then
	# Print the list of files that are not properly formatted
	echo "FAIL: Some files are not properly formatted. To resolve issues, run:"
	for file in "${files_to_fix[@]}"; do
	echo "clang-format-${CLANG_FORMAT_VERSION} -i $file"
	done
	echo

	for file in "${files_to_fix[@]}"; do
	echo "Diff for $file:"
	bash -c "clang-format-${CLANG_FORMAT_VERSION} $file \| diff $file -; exit 0"
	echo
	done

	exit 1
	fi

	echo "PASS: All files are properly formatted."

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