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how to allow integer overflow for calculating hash code of a string? - Mailing list pgsql-admin

From Haifeng Liu
Subject how to allow integer overflow for calculating hash code of a string?
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Msg-id BLU0-SMTP486A3A8F157C95DD76E23EB99A0@phx.gbl
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Responses Re: how to allow integer overflow for calculating hash code of a string?  (Craig James <cjames@emolecules.com>)
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I want to write a hash function which acts as String.hashCode() in java: hash = hash * 31 + s.charAt(i)... but I got
integerout of range error. How can I avoid this? I saw java do not care overflow of int, it just make the result
negative.

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