Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / bcd.h

diff --git a/kernel/include/linux/bcd.h b/kernel/include/linux/bcd.h
new file mode 100644 (file)
index 0000000..18fff11
--- /dev/null
+++ b/kernel/include/linux/bcd.h
@@ -0,0 +1,22 @@
+#ifndef _BCD_H
+#define _BCD_H
+
+#include <linux/compiler.h>
+
+#define bcd2bin(x)                                     \
+               (__builtin_constant_p((u8 )(x)) ?       \
+               const_bcd2bin(x) :                      \
+               _bcd2bin(x))
+
+#define bin2bcd(x)                                     \
+               (__builtin_constant_p((u8 )(x)) ?       \
+               const_bin2bcd(x) :                      \
+               _bin2bcd(x))
+
+#define const_bcd2bin(x)       (((x) & 0x0f) + ((x) >> 4) * 10)
+#define const_bin2bcd(x)       ((((x) / 10) << 4) + (x) % 10)
+
+unsigned _bcd2bin(unsigned char val) __attribute_const__;
+unsigned char _bin2bcd(unsigned val) __attribute_const__;
+
+#endif /* _BCD_H */