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Document the exponentiation operator as associating left to right.

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Common mathematical convention is that exponentiation associates right to
left.  We aren't going to change the parser for this, but we could note
it in the operator's description.  (It's already noted in the operator
precedence/associativity table, but users might not look there.)
Per bug #13829 from Henrik Pauli.
This commit is contained in:
Tom Lane 2015-12-28 12:09:00 -05:00
parent 870df2b3b7
commit 54aaafe95f
1 changed files with 1 additions and 1 deletions
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doc/src/sgml/func.sgml
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@ -505,7 +505,7 @@
<row> <row>
<entry> <literal>^</literal> </entry> <entry> <literal>^</literal> </entry>
<entry>exponentiation</entry> <entry>exponentiation (associates left to right)</entry>
<entry><literal>2.0 ^ 3.0</literal></entry> <entry><literal>2.0 ^ 3.0</literal></entry>
<entry><literal>8</literal></entry> <entry><literal>8</literal></entry>
</row> </row>