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| author | Bruce Momjian <bruce@momjian.us> | 2003-12-01 21:52:38 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2003-12-01 21:52:38 +0000 |
| commit | 04a4821adef38155b7920ba9eb83c4c3c29156f8 (patch) | |
| tree | c778c2d286441d98a2453f06f5af9c2b214ffc3e /src/include/utils/builtins.h | |
| parent | af03663878b257f7fb93a80eec03a8dd070b22b7 (diff) | |
| download | postgresql-04a4821adef38155b7920ba9eb83c4c3c29156f8.tar.gz postgresql-04a4821adef38155b7920ba9eb83c4c3c29156f8.zip | |
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
Diffstat (limited to 'src/include/utils/builtins.h')
| -rw-r--r-- | src/include/utils/builtins.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h index 92663c3e5cd..c784f28afdc 100644 --- a/src/include/utils/builtins.h +++ b/src/include/utils/builtins.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.230 2003/11/29 22:41:15 pgsql Exp $ + * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.231 2003/12/01 21:52:38 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -159,8 +159,6 @@ extern Datum int4mod(PG_FUNCTION_ARGS); extern Datum int2mod(PG_FUNCTION_ARGS); extern Datum int24mod(PG_FUNCTION_ARGS); extern Datum int42mod(PG_FUNCTION_ARGS); -extern Datum int4fac(PG_FUNCTION_ARGS); -extern Datum int2fac(PG_FUNCTION_ARGS); extern Datum int2larger(PG_FUNCTION_ARGS); extern Datum int2smaller(PG_FUNCTION_ARGS); extern Datum int4larger(PG_FUNCTION_ARGS); @@ -720,6 +718,7 @@ extern Datum numeric_mod(PG_FUNCTION_ARGS); extern Datum numeric_inc(PG_FUNCTION_ARGS); extern Datum numeric_smaller(PG_FUNCTION_ARGS); extern Datum numeric_larger(PG_FUNCTION_ARGS); +extern Datum numeric_fac(PG_FUNCTION_ARGS); extern Datum numeric_sqrt(PG_FUNCTION_ARGS); extern Datum numeric_exp(PG_FUNCTION_ARGS); extern Datum numeric_ln(PG_FUNCTION_ARGS); |