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Allow float8, int8, and related datatypes to be passed by value on machines

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where Datum is 8 bytes wide.  Since this will break old-style C functions
(those still using version 0 calling convention) that have arguments or
results of these types, provide a configure option to disable it and retain
the old pass-by-reference behavior.  Likewise, provide a configure option
to disable the recently-committed float4 pass-by-value change.

Zoltan Boszormenyi, plus configurability stuff by me.
This commit is contained in:
Tom Lane
2008-04-21 00:26:47 +00:00
parent be939544a6
commit 8472bf7a73
36 changed files with 661 additions and 243 deletions
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9
src/backend/utils/adt/float.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.154 2008/03/10 12:39:22 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.155 2008/04/21 00:26:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1780,7 +1780,7 @@ float8_accum(PG_FUNCTION_ARGS)
result = construct_array(transdatums, 3,
FLOAT8OID,
sizeof(float8), false /* float8 byval */ , 'd');
sizeof(float8), FLOAT8PASSBYVAL, 'd');
PG_RETURN_ARRAYTYPE_P(result);
}
@ -1833,7 +1833,7 @@ float4_accum(PG_FUNCTION_ARGS)
result = construct_array(transdatums, 3,
FLOAT8OID,
sizeof(float8), false /* float8 byval */ , 'd');
sizeof(float8), FLOAT8PASSBYVAL, 'd');
PG_RETURN_ARRAYTYPE_P(result);
}
@ -2056,8 +2056,7 @@ float8_regr_accum(PG_FUNCTION_ARGS)
result = construct_array(transdatums, 6,
FLOAT8OID,
sizeof(float8),
false /* float8 byval */ , 'd');
sizeof(float8), FLOAT8PASSBYVAL, 'd');
PG_RETURN_ARRAYTYPE_P(result);
}