From 397f75a4db7413beef0edf710312fe15d36703cf Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <patrick.pelissier@gmail.com>
Date: Wed, 27 Jun 2018 07:33:23 +0200
Subject: [PATCH] Add missing method _front for bitset.

---
 m-bitset.h           | 8 ++++++++
 tests/test-mbitset.c | 5 ++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/m-bitset.h b/m-bitset.h
index 57362251..e53d6851 100644
--- a/m-bitset.h
+++ b/m-bitset.h
@@ -272,6 +272,14 @@ bitset_pop_back(bool *dest, bitset_t v)
   BITSETI_CONTRACT (v);
 }
 
+static inline bool
+bitset_front(bitset_t v)
+{
+  BITSETI_CONTRACT (v);
+  assert(v->size > 0);
+  return bitset_get(v, 0);
+}
+
 static inline bool
 bitset_back(bitset_t v)
 {
diff --git a/tests/test-mbitset.c b/tests/test-mbitset.c
index 36be221a..3d78e9a7 100644
--- a/tests/test-mbitset.c
+++ b/tests/test-mbitset.c
@@ -30,6 +30,7 @@ static void test1(void)
   bitset_t set;
 
   bitset_init(set);
+  assert(bitset_empty_p(set) == true);
   for(int i = 0; i < 100; i ++) {
     bitset_push_back(set, i%2);
     assert (bitset_back(set) == (i%2));
@@ -39,7 +40,9 @@ static void test1(void)
   }
   assert(bitset_size(set) == 100);
   assert(bitset_empty_p(set) == false);
-
+  assert(bitset_front(set) == false);
+  assert(bitset_back(set) == true);
+  
   bitset_t set2;
   bitset_init_set(set2, set);