From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Sun, 9 Apr 2017 22:28:26 +0000 (+0200)
Subject: factor: a bit more simple isqrt
X-Git-Tag: 1_27_0~67
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=bef17132175945a121992e3d13f0cc78ae722b1b;p=oweals%2Fbusybox.git

factor: a bit more simple isqrt

function                                             old     new   delta
isqrt_odd                                             87      80      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/coreutils/factor.c b/coreutils/factor.c
index 48833e103..8ca3de71a 100644
--- a/coreutils/factor.c
+++ b/coreutils/factor.c
@@ -62,7 +62,7 @@ static inline half_t isqrt(wide_t N)
 	 */
 	x = HALF_MAX;
 	mask_2bits = TOPMOST_WIDE_BIT | (TOPMOST_WIDE_BIT >> 1);
-	while (mask_2bits && !(N & mask_2bits)) {
+	while (!(N & mask_2bits)) {
 		x >>= 1;
 		mask_2bits >>= 2;
 	}