Обсуждение: pgsql-server/src backend/utils/adt/int.c backe ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    momjian@svr1.postgresql.org    03/12/01 17:52:38

Modified files:
    src/backend/utils/adt: int.c int8.c numeric.c
    src/include/catalog: pg_operator.h pg_proc.h
    src/include/utils: builtins.h int8.h
    src/test/regress/expected: create_operator.out
    src/test/regress/sql: create_operator.sql

Log message:
    Attached is a patch implementing factorial(), returning numeric. Points
    to note:

    1) arttype is numeric. I thought this was the best way of allowing
    arbitarily large factorials, even though factorial(2^63) is a large
    number. Happy to change to integers if this is overkill.
    2) since we're accepting numeric arguments, the patch tests for floats.
    If a numeric is passed with non-zero decimal portion, an error is raised
    since (from memory) they are undefined.

    Gavin Sherry