X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=cfg%2Fmacros.h;h=45f0a1edfa91ba8b644d2ce34b7eb826ad6a4b33;hb=5f3952176a4e9a00ca8dd5ec4a6b994958f89e0a;hp=17ee7887759914cca7814d090cfff253e2998fbd;hpb=bcf38f772b397e7a8ba781a69aacb9380e54b32a;p=bertos.git

diff --git a/cfg/macros.h b/cfg/macros.h
old mode 100755
new mode 100644
index 17ee7887..45f0a1ed
--- a/cfg/macros.h
+++ b/cfg/macros.h
@@ -14,6 +14,12 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.11  2007/02/06 15:22:12  asterix
+ *#* Add ROTL and ROTR macros for bit rotating.
+ *#*
+ *#* Revision 1.10  2006/09/13 18:31:37  bernie
+ *#* BV8(), BV16(), BV32(): New macros for CPUs with small word size; SWAP_T(): New macro to support old compilers.
+ *#*
  *#* Revision 1.9  2006/07/19 12:56:25  bernie
  *#* Convert to new Doxygen style.
  *#*
@@ -158,11 +164,38 @@
 
 #endif /* COMPILER_TYPEOF */
 
+/**
+ * Macro to swap \a a with \a b, with explicit type \a T for dumb C89 compilers.
+ *
+ * \note Arguments are evaluated multiple times.
+ */
+#define SWAP_T(a, b, T) \
+	do { \
+		T tmp; \
+		ASSERT_TYPE_IS(a, T); \
+		ASSERT_TYPE_IS(b, T); \
+		tmp = (a); \
+		(a) = (b); \
+		(b) = tmp; \
+	} while (0)
+
+
 #ifndef BV
 	/** Convert a bit value to a binary flag. */
 	#define BV(x)  (1<<(x))
 #endif
 
+/** Same as BV() but with 32 bit result */
+#define BV32(x)  ((uint32_t)1<<(x))
+
+/** Same as BV() but with 16 bit result */
+#define BV16(x)  ((uint16_t)1<<(x))
+
+/** Same as BV() but with 8 bit result */
+#define BV8(x)  ((uint8_t)1<<(x))
+
+
+
 /** Round up \a x to an even multiple of the 2's power \a pad. */
 #define ROUND_UP2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))
 
@@ -309,5 +342,13 @@
 
 #endif /* COMPILER_VARIADIC_MACROS */
 
+/**
+ * Macro for rotating bit left or right.
+ * \{
+ */
+#define ROTR(var, rot) (((var) >> (rot)) | ((var) << ((sizeof(var) * 8) - (rot))))
+#define ROTL(var, rot) (((var) << (rot)) | ((var) >> ((sizeof(var) * 8) - (rot))))
+/*\}*/
+
 #endif /* MACROS_H */