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-rw-r--r--Include/bitset.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/Include/bitset.h b/Include/bitset.h
index 07b64b0a64..f7dbe8fbb6 100644
--- a/Include/bitset.h
+++ b/Include/bitset.h
@@ -1,3 +1,9 @@
+#ifndef Py_BITSET_H
+#define Py_BITSET_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/***********************************************************
Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
Amsterdam, The Netherlands.
@@ -44,3 +50,8 @@ void mergebitset PROTO((bitset bs1, bitset bs2, int nbits));
#define BYTE2BIT(ibyte) ((ibyte) * BITSPERBYTE)
#define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BITSET_H */