database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-23 14:01:44 +03:00
Code Activity

Add casts from int4 and int8 to numeric.

Browse Source 
Joey Adams, per gripe from Ramanujam.  Review by myself and Tom Lane.
This commit is contained in:
Robert Haas
2011-04-05 09:35:43 -04:00
parent 88f32b7ca2
commit f5e524d92b
8 changed files with 161 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
src/backend/utils/adt/cash.c
View File

@ -26,6 +26,7 @@
#include "libpq/pqformat.h"
#include "utils/builtins.h"
#include "utils/cash.h"
#include "utils/int8.h"
#include "utils/numeric.h"
#include "utils/pg_locale.h"
@ -92,7 +93,6 @@ num_word(Cash value)
return buf;
} /* num_word() */
/* cash_in()
* Convert a string to a cash data type.
* Format is [$]###[,]###[.##]
@ -938,3 +938,63 @@ numeric_cash(PG_FUNCTION_ARGS)
PG_RETURN_CASH(result);
}
/* int4_cash()
* Convert int4 (int) to cash
*/
Datum
int4_cash(PG_FUNCTION_ARGS)
{
int32 amount = PG_GETARG_INT32(0);
Cash result;
int fpoint;
int64 scale;
int i;
struct lconv *lconvert = PGLC_localeconv();
/* see comments about frac_digits in cash_in() */
fpoint = lconvert->frac_digits;
if (fpoint < 0 || fpoint > 10)
fpoint = 2;
/* compute required scale factor */
scale = 1;
for (i = 0; i < fpoint; i++)
scale *= 10;
/* compute amount * scale, checking for overflow */
result = DatumGetInt64(DirectFunctionCall2(int8mul, Int64GetDatum(amount),
Int64GetDatum(scale)));
PG_RETURN_CASH(result);
}
/* int8_cash()
* Convert int8 (bigint) to cash
*/
Datum
int8_cash(PG_FUNCTION_ARGS)
{
int64 amount = PG_GETARG_INT64(0);
Cash result;
int fpoint;
int64 scale;
int i;
struct lconv *lconvert = PGLC_localeconv();
/* see comments about frac_digits in cash_in() */
fpoint = lconvert->frac_digits;
if (fpoint < 0 || fpoint > 10)
fpoint = 2;
/* compute required scale factor */
scale = 1;
for (i = 0; i < fpoint; i++)
scale *= 10;
/* compute amount * scale, checking for overflow */
result = DatumGetInt64(DirectFunctionCall2(int8mul, Int64GetDatum(amount),
Int64GetDatum(scale)));
PG_RETURN_CASH(result);
}