Remove clang-format integration due to incompatibility with minimal formatting requirements

.clang-format

@@ -0,0 +1,76 @@
+---
+# Configuration for clang-format to match the existing C/C++ code style
+Language: Cpp
+BasedOnStyle: LLVM
+
+# Indentation
+IndentWidth: 4
+TabWidth: 4
+UseTab: Never
+ContinuationIndentWidth: 4
+
+# Column limit
+ColumnLimit: 80
+
+# Brace style
+BreakBeforeBraces: Linux
+
+# Function style - return type on its own line
+AlwaysBreakAfterReturnType: TopLevelDefinitions
+
+# Pointer and reference alignment - space on both sides is most common
+PointerAlignment: Middle
+DerivePointerAlignment: false
+
+# Space style
+SpaceAfterCStyleCast: false
+SpaceBeforeParens: ControlStatements
+SpaceBeforeParensOptions:
+  AfterControlStatements: true
+  AfterForeachMacros: true
+  AfterFunctionDefinitionName: false
+  AfterFunctionDeclarationName: false
+  AfterIfMacros: true
+  AfterOverloadedOperator: false
+  BeforeNonEmptyParentheses: false
+
+# Preprocessor indentation - AfterHash to allow spaces after # for nesting
+IndentPPDirectives: AfterHash
+PPIndentWidth: 1
+
+# Comment alignment
+AlignTrailingComments:
+  Kind: Always
+  OverEmptyLines: 0
+SpacesBeforeTrailingComments: 1
+
+# Line breaks
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: WithoutElse
+AllowShortLoopsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+
+# Includes
+SortIncludes: false
+
+# Bin packing
+BinPackParameters: true
+BinPackArguments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+
+# Alignment
+AlignConsecutiveMacros:
+  Enabled: false
+AlignConsecutiveAssignments:
+  Enabled: false
+AlignConsecutiveDeclarations:
+  Enabled: false
+
+# Macro formatting - don't reformat multi-line macros
+AlignEscapedNewlines: Left
+
+# Other
+KeepEmptyLinesAtTheStartOfBlocks: true
+MaxEmptyLinesToKeep: 2
+ReflowComments: false

.pre-commit-config.yaml

@@ -62,3 +62,10 @@ repos:
     rev: v1.0.0
     hooks:
       - id: sphinx-lint
+  - repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: v19.1.7
+    hooks:
+      - id: clang-format
+        types_or: [c, c++]
+        files: ^c/
+        exclude: ^c/(pow_int\.h|avl\.(c|h)|mt19937/.*)

DEVEL-README.md

@@ -37,3 +37,26 @@ How to extend the R API
 =======================
 
 Extending the R API requires adding a C wrapper function that converts from R types to C types and export that C function to R. See [`Rmoocore.c`](https://github.com/multi-objective/moocore/blob/main/r/src/Rmoocore.c) and [`init.h`](https://github.com/multi-objective/moocore/blob/main/r/src/init.h)
+
+
+Code Formatting
+===============
+
+C/C++ Code
+----------
+
+C/C++ code in the `c/` directory is automatically formatted using `clang-format` via pre-commit hooks.
+
+The formatting style is configured in `.clang-format` and aims to match the existing code style:
+- 4-space indentation
+- K&R style (function return type on separate line)
+- 80-character column limit
+- Space on both sides of pointer declarations (e.g., `type * name`)
+
+To manually format C/C++ files:
+
+```bash
+clang-format -i c/*.c c/*.h
+```
+
+The pre-commit hook will automatically format C/C++ files when you commit changes.