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8199258: BigInteger.bitLength() should explicitly specify behavior when the value is zero

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Reviewed-by: lancea, rriggs
This commit is contained in:
Brian Burkhalter 2018-03-13 11:49:17 -07:00
parent f52ea8839e
commit ae966db198
1 changed files with 3 additions and 3 deletions
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6
src/java.base/share/classes/java/math/BigInteger.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -3556,8 +3556,8 @@ public class BigInteger extends Number implements Comparable<BigInteger> {
* Returns the number of bits in the minimal two's-complement
* representation of this BigInteger, <em>excluding</em> a sign bit.
* For positive BigIntegers, this is equivalent to the number of bits in
* the ordinary binary representation. (Computes
* {@code (ceil(log2(this < 0 ? -this : this+1)))}.)
* the ordinary binary representation. For zero this method returns
* {@code 0}. (Computes {@code (ceil(log2(this < 0 ? -this : this+1)))}.)
*
* @return number of bits in the minimal two's-complement
* representation of this BigInteger, <em>excluding</em> a sign bit.