Unify formatting using clang format

.clang-format

@@ -0,0 +1,67 @@
+# minimum clang-format 10
+BasedOnStyle: LLVM
+
+Language: Cpp
+Standard: c++17
+
+TabWidth: 4
+UseTab: Never
+
+AccessModifierOffset: -4
+
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: true
+AlignOperands: true
+AlignTrailingComments: true
+
+AllowAllConstructorInitializersOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: InlineOnly
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLambdasOnASingleLine: None
+AllowShortLoopsOnASingleLine: false
+
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+
+BinPackArguments: true
+BinPackParameters: true
+
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: AfterColon
+BreakConstructorInitializersBeforeComma: false
+BreakStringLiterals: true
+
+ColumnLimit: 100
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 8
+ContinuationIndentWidth: 8
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+DisableFormat: false
+IndentCaseLabels: false
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 2
+NamespaceIndentation: Inner
+PointerAlignment: Left
+ReflowComments: false
+SortIncludes: false
+
+SpaceAfterCStyleCast: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: Never
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+

configure/qdldl_types.h.in

@@ -1,11 +1,12 @@
 #ifndef QDLDL_TYPES_H
-# define QDLDL_TYPES_H
+#define QDLDL_TYPES_H
 
-# ifdef __cplusplus
+#ifdef __cplusplus
 extern "C" {
-# endif /* ifdef __cplusplus */
+#endif /* ifdef __cplusplus */
 
-#include <limits.h> //for the QDLDL_INT_TYPE_MAX
+// For the QDLDL_INT_TYPE_MAX
+#include <limits.h>
 
 // QDLDL integer and float types
 
@@ -26,8 +27,8 @@ typedef @QDLDL_BOOL_TYPE@   QDLDL_bool;  /* for boolean values  */
 /* When defined, QDLDL is using long long instead of int types */
 #cmakedefine QDLDL_LONG
 
-# ifdef __cplusplus
+#ifdef __cplusplus
 }
-# endif /* ifdef __cplusplus */
+#endif /* ifdef __cplusplus */
 
 #endif /* ifndef QDLDL_TYPES_H */