diff options
Diffstat (limited to 'src/include/c.h')
| -rw-r--r-- | src/include/c.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/include/c.h b/src/include/c.h index 603c5bbfe85..60abde17368 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -8,7 +8,7 @@ * Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: c.h,v 1.78 2000/07/12 22:59:12 petere Exp $ + * $Id: c.h,v 1.79 2000/07/17 03:05:20 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -587,6 +587,25 @@ extern Datum Float8GetDatum(float8 X); #define Float64GetDatum(X) PointerGetDatum(X) +/* + * Int64GetDatumFast + * Float4GetDatumFast + * Float8GetDatumFast + * + * These macros are intended to allow writing code that does not depend on + * whether int64, float4, float8 are pass-by-reference types, while not + * sacrificing performance when they are. The argument must be a variable + * that will exist and have the same value for as long as the Datum is needed. + * In the pass-by-ref case, the address of the variable is taken to use as + * the Datum. In the pass-by-val case, these will be the same as the non-Fast + * macros. + */ + +#define Int64GetDatumFast(X) PointerGetDatum(&(X)) +#define Float4GetDatumFast(X) PointerGetDatum(&(X)) +#define Float8GetDatumFast(X) PointerGetDatum(&(X)) + + /* ---------------------------------------------------------------- * Section 5: IsValid macros for system types * ---------------------------------------------------------------- |