factor: a bit more simple isqrt

function                                             old     new   delta
isqrt_odd                                             87      80      -7

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

1 files changed, 1 insertions, 1 deletions

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;
         }