INDEX broken on NUMERIC type.

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Michael Schout
Your email address : mschout(at)gkg(dot)net

System Configuration
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Architecture (example: Intel Pentium) : Intel Pentium-II

Operating System (example: Linux 2.0.26 ELF) : Linux 2.2.12 ELF

PostgreSQL version (example: PostgreSQL-6.5.2): PostgreSQL-6.5.2

Compiler used (example: gcc 2.8.0) : gcc egcs-2.91.66

Please enter a FULL description of your problem:
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NUMERIC type cannot be used in an INDEX.

Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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Method (1) using primary key syntax:
scdrought=> create table foo ( f1 NUMERIC(3,0) primary key );
NOTICE: CREATE TABLE/PRIMARY KEY will create implicit index 'foo_pkey' for table 'foo'
ERROR: Can't find a default operator class for type 1700.

Method (2) do it by hand.
mschout=> create table foo (f1 NUMERIC(3,0));
CREATE
mschout=> CREATE UNIQUE INDEX foo_pkey ON foo (f1);
ERROR: Can't find a default operator class for type 1700.

If you know how this problem might be fixed, list the solution below:
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