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Expose internal function for converting int64 to numeric

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Existing callers had to take complicated detours via
DirectFunctionCall1().  This simplifies a lot of code.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/42b73d2d-da12-ba9f-570a-420e0cce19d9@phystech.edu
This commit is contained in:
Peter Eisentraut
2020-09-09 20:16:28 +02:00
parent a273dcc6fd
commit 0aa8f76408
8 changed files with 50 additions and 132 deletions
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7
src/backend/utils/adt/cash.c
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@@ -1042,7 +1042,7 @@ cash_numeric(PG_FUNCTION_ARGS)
fpoint = 2;
/* convert the integral money value to numeric */
result = DirectFunctionCall1(int8_numeric, Int64GetDatum(money));
result = NumericGetDatum(int64_to_numeric(money));
/* scale appropriately, if needed */
if (fpoint > 0)
@@ -1056,8 +1056,7 @@ cash_numeric(PG_FUNCTION_ARGS)
scale = 1;
for (i = 0; i < fpoint; i++)
scale *= 10;
numeric_scale = DirectFunctionCall1(int8_numeric,
Int64GetDatum(scale));
numeric_scale = NumericGetDatum(int64_to_numeric(scale));
/*
* Given integral inputs approaching INT64_MAX, select_div_scale()
@@ -1107,7 +1106,7 @@ numeric_cash(PG_FUNCTION_ARGS)
scale *= 10;
/* multiply the input amount by scale factor */
numeric_scale = DirectFunctionCall1(int8_numeric, Int64GetDatum(scale));
numeric_scale = NumericGetDatum(int64_to_numeric(scale));
amount = DirectFunctionCall2(numeric_mul, amount, numeric_scale);
/* note that numeric_int8 will round to nearest integer for us */