From d58fb1e290cb8a28a04900e132ae09002ae62937 Mon Sep 17 00:00:00 2001
From: Daisuke Yamazaki <dyama@openjdk.org>
Date: Mon, 30 Mar 2026 12:58:07 +0000
Subject: [PATCH] 8374202: Simplify significand normalization in
 BigDecimal(double, MathContext) constructor

Reviewed-by: rgiulietti
---
 src/java.base/share/classes/java/math/BigDecimal.java | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/java.base/share/classes/java/math/BigDecimal.java b/src/java.base/share/classes/java/math/BigDecimal.java
index 14d81d30c3d..6e651b4fde2 100644
--- a/src/java.base/share/classes/java/math/BigDecimal.java
+++ b/src/java.base/share/classes/java/math/BigDecimal.java
@@ -1026,12 +1026,11 @@ public class BigDecimal extends Number implements Comparable<BigDecimal> {
             return;
         }
         // Normalize
-        while ((significand & 1) == 0) { // i.e., significand is even
-            significand >>= 1;
-            exponent++;
-        }
-        int scl = 0;
+        int nTrailingZeros = Long.numberOfTrailingZeros(significand);
+        significand >>= nTrailingZeros;
+        exponent += nTrailingZeros;
         // Calculate intVal and scale
+        int scl = 0;
         BigInteger rb;
         long compactVal = sign * significand;
         if (exponent == 0) {