From 3feb647f3fd0881382c7a29f4cf280b66473ae0a Mon Sep 17 00:00:00 2001
From: Sergei Poselenov <sposelenov@emcraft.com>
Date: Tue, 4 Nov 2008 13:51:18 +0100
Subject: [PATCH] Add a do_div() wrapper macro, lldiv().
Add a do_div() wrapper, lldiv(). The new inline function doesn't modify
the dividend and returns the result of division, so it is useful
in complex expressions, i.e. "return(a/b)" -> "return(lldiv(a,b))"
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
---
include/div64.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/div64.h b/include/div64.h
index c495aefb014..d83314435d8 100644
--- a/include/div64.h
+++ b/include/div64.h
@@ -36,4 +36,14 @@ extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
__rem; \
})
+/* Wrapper for do_div(). Doesn't modify dividend and returns
+ * the result, not reminder.
+ */
+static inline uint64_t lldiv(uint64_t dividend, uint32_t divisor)
+{
+ uint64_t __res = dividend;
+ do_div(__res, divisor);
+ return(__res);
+}
+
#endif /* _ASM_GENERIC_DIV64_H */
--
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