From 23990f4a802d8f174ad01e21c27ae449988d807f Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Tue, 4 Aug 2020 17:37:53 +0200
Subject: format code

---
 dlist.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'dlist.c')

diff --git a/dlist.c b/dlist.c
index 5a11c5b..a2a5cfd 100644
--- a/dlist.c
+++ b/dlist.c
@@ -28,6 +28,12 @@ dlist_init(struct dlist *dlist)
 	dlist->tail = NULL;
 }
 
+bool
+dlist_empty(struct dlist *dlist)
+{
+	return dlist->head == NULL;
+}
+
 static struct dlist_element *
 create_element(T data)
 {
@@ -50,11 +56,11 @@ dlist_push_front(struct dlist *dlist, T data)
 	if ( element != NULL ) {
 		element->prev = NULL; /* Vorgänger ist in jedem Fall NULL */
 
-		if ( dlist->head == NULL ) { /* empty list */
+		if ( dlist_empty(dlist) ) {
 			element->next = NULL;
 			dlist->tail   = element;
 		}
-		else { /* non empty list */
+		else {
 			element->next       = dlist->head;
 			element->next->prev = element;
 		}
@@ -76,11 +82,11 @@ dlist_push_back(struct dlist *dlist, T data)
 	if ( element != NULL ) {
 		element->next = NULL; /* Nachfolger ist in jedem Fall NULL */
 
-		if ( dlist->head == NULL ) { /* empty list */
+		if ( dlist_empty(dlist) ) {
 			element->prev = NULL;
 			dlist->head   = element;
 		}
-		else { /* non empty list */
+		else {
 			element->prev       = dlist->tail;
 			element->prev->next = element;
 		}
@@ -238,8 +244,9 @@ dlist_free(struct dlist *dlist)
 void
 dlist_apply_rev(struct dlist *dlist, void (*visit)(T data, void *cl), void *cl)
 {
-	for ( struct dlist_element *elem = dlist->tail; elem; elem = elem->prev )
+	for ( struct dlist_element *elem = dlist->tail; elem; elem = elem->prev ) {
 		visit(elem->data, cl);
+	}
 }
 
 void
@@ -272,8 +279,9 @@ remove_if(struct dlist *list)
 	for ( elem = list->head; elem; elem = next ) {
 		next = elem->next;
 
-		if ( (elem->data & 1) == 1 )
+		if ( (elem->data & 1) == 1 ) {
 			dlist_remove(list, elem);
+		}
 	}
 }
 
-- 
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