From: Anshul Garg <aksgarg1...@gmail.com>
Unnecessary instructions are executing even though m is
greater than x so added logic to make m less than equal to
x before performing these operations.
Signed-off-by: Anshul Garg <aksgarg1...@gmail.com>
---
lib/int_sqrt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c
index 1ef4cc3..64ae722 100644
--- a/lib/int_sqrt.c
+++ b/lib/int_sqrt.c
@@ -22,6 +22,9 @@ unsigned long int_sqrt(unsigned long x)
return x;
m = 1UL << (BITS_PER_LONG - 2);
+
+ while (m > x)
+ m >>= 2;
while (m != 0) {
b = y + m;
y >>= 1;
--
1.7.9.5
---
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