X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=urcu%2Fcompiler.h;h=0032b60cf67b64ee9bb349efdfaf17e8c34aba3a;hb=b683af4b537b63551775239242744d0d367377ff;hp=cd4a49d19dc6e82f454027bfba76dc2f8eb14bf5;hpb=bf65ba4ee8bf2fb7ac164824c27576ef24a61e6c;p=urcu.git

diff --git a/urcu/compiler.h b/urcu/compiler.h
index cd4a49d..0032b60 100644
--- a/urcu/compiler.h
+++ b/urcu/compiler.h
@@ -86,9 +86,14 @@
 #define URCU_FORCE_CAST(type, arg)	((type) (arg))
 #endif
 
-#define caa_is_signed_type(type)	(((type) (-1)) < 0)
+#define caa_is_signed_type(type)	((type) -1 < (type) 0)
 
-#define caa_cast_long_keep_sign(v)	\
-	(caa_is_signed_type(__typeof__(v)) ? (long) (v) : (unsigned long) (v))
+/*
+ * Sign-extend to long if needed, and output type is unsigned long.
+ */
+#define caa_cast_long_keep_sign(v)		\
+	(caa_is_signed_type(__typeof__(v)) ?	\
+		(unsigned long) (long) (v) :	\
+		(unsigned long) (v))
 
 #endif /* _URCU_COMPILER_H */