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POBigDecimal - check value is within double range
primarykey
Id
5411637
data
AcceptedAnswerId
5411667
AnswerCount
2
ClosedDate
CommentCount
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CommunityOwnedDate
CreationDate
2011-03-23T21:07:27.617
FavoriteCount
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2011-03-23T21:15:57.750
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LastEditorUserId
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PostTypeId
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Score
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ViewCount
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LastEditorDisplayName
text
Body
I have a Java application which parses a number from somewhere, and checks that it is a valid int (between Integer.MIN_VALUE and Integer.MAX_VALUE) or a valid double (between Double.MIN_VALUE and Double.MAX_VALUE). I'm using this code: <pre><code>import java.math.BigDecimal; import java.math.BigInteger; public class Test { public static final BigDecimal DOUBLE_MAX = BigDecimal.valueOf(Double.MAX_VALUE); public static final BigDecimal DOUBLE_MIN = BigDecimal.valueOf(Double.MIN_VALUE); public static final BigInteger INTEGER_MIN = BigInteger.valueOf(Integer.MIN_VALUE); public static final BigInteger INTEGER_MAX = BigInteger.valueOf(Integer.MAX_VALUE); private static boolean inRange(BigDecimal value) { return DOUBLE_MAX.compareTo(value) >= 0 && DOUBLE_MIN.compareTo(value) <= 0; } private static boolean inRange(BigInteger value) { return INTEGER_MAX.compareTo(value) >= 0 && INTEGER_MIN.compareTo(value) <= 0; } public static void main(String[] args) { System.out.println(inRange(new BigInteger("1234656"))); System.out.println(inRange(new BigInteger("0"))); System.out.println(inRange(new BigInteger("-987"))); System.out.println(inRange(new BigDecimal("1234656.0"))); System.out.println(inRange(new BigDecimal("0.0"))); System.out.println(inRange(new BigDecimal("-987.0"))); } } </code></pre> Which works fine for int values, but for some reason, fails for any zero or negative double value. So running the above produces the output: <pre><code>true true true true false false </code></pre> What am I doing wrong here? Also, I've seen examples where DOUBLE_MIN is set to be -Double.MAX_VALUE. This works but is it correct? Thanks.
Tags
<java><double><bigdecimal>
Title
BigDecimal - check value is within double range
singulars
PostAcceptedAnswerId
1. PO
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 PostTypePostTypeId
 PTAnswer
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USR Campbell
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
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 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
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 PostTypePostTypeId
 PTAnswer
2. PO
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 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
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 PostPostId
 POBigDecimal - check value is within double range
 UserUserId
 This table or related slice is empty.
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 VTUpMod
CommentsPostId
1. This table or related slice is empty.

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