(BOOL_VECTOR_BITS_PER_CHAR): Define.

diff --git a/src/lisp.h b/src/lisp.h
index ce5a5c5917e0df950782e72e1411f8b2e309e685..50f063371a9e3b00ba6177c28068a923b18e50a8 100644 (file)
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -278,6 +278,10 @@ enum pvec_type
 
 /* For convenience, we also store the number of elements in these bits.  */
 #define PSEUDOVECTOR_SIZE_MASK 0x1ff
+
+/* Number of bits to put in each character in the internal representation
+   of bool vectors.  This should not vary across implementations.  */
+#define BOOL_VECTOR_BITS_PER_CHAR 8
 \f
 /***** Select the tagging scheme.  *****/