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authorIngo Molnar <[email protected]>2008-07-26 17:48:49 +0200
committerIngo Molnar <[email protected]>2008-07-26 17:48:49 +0200
commitc3cc99ff5d24e2eeaf7ec2032e720681916990e3 (patch)
treec3e74171bbbd2adde9d60b9db1c440415c8d2831 /include/linux/bcd.h
parent38ffbe66d59051fd9cfcfc8545f164700e2fa3bc (diff)
parent024e8ac04453b3525448c31ef39848cf675ba6db (diff)
Merge branch 'linus' into x86/xen
Diffstat (limited to 'include/linux/bcd.h')
-rw-r--r--include/linux/bcd.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/bcd.h b/include/linux/bcd.h
index c545308125b0..7ac518e3c152 100644
--- a/include/linux/bcd.h
+++ b/include/linux/bcd.h
@@ -10,8 +10,13 @@
#ifndef _BCD_H
#define _BCD_H
-#define BCD2BIN(val) (((val) & 0x0f) + ((val)>>4)*10)
-#define BIN2BCD(val) ((((val)/10)<<4) + (val)%10)
+#include <linux/compiler.h>
+
+unsigned bcd2bin(unsigned char val) __attribute_const__;
+unsigned char bin2bcd(unsigned val) __attribute_const__;
+
+#define BCD2BIN(val) bcd2bin(val)
+#define BIN2BCD(val) bin2bcd(val)
/* backwards compat */
#define BCD_TO_BIN(val) ((val)=BCD2BIN(val))