[U-Boot] [PATCH 1/2] COMMON: Add __stringify() function

[Marek Vasut]

This function converts static number to string in preprocessor.
This is useful as it allows higher usage of puts() in favour of printf()

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Wolfgang Denk <wd at denx.de>
Cc: Mike Frysinger <vapier at gentoo.org>
---
 include/common.h |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/common.h b/include/common.h
index d1dd65a..451917d 100644
--- a/include/common.h
+++ b/include/common.h
@@ -268,6 +268,13 @@ typedef void (interrupt_handler_t)(void *);
 	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
 	(type *)( (char *)__mptr - offsetof(type,member) );})
 
+/**
+ * __stringify - preprocessor magic to return string from number
+ * @x:           constant number
+ */
+#define __stringify_1(x...)     #x
+#define __stringify(x...)       __stringify_1(x)
+
 /*
  * Function Prototypes
  */
-- 
1.7.10.4