
The previous macro implementations just cast the argument to a target type but did not check whether the input type was appropriate. The function implementation can do better type checking of the input type. For the *GetDatumFast() macros, converting to an inline function doesn't work in the !USE_FLOAT8_BYVAL case, but we can use AssertVariableIsOfTypeMacro() to get a similar level of type checking. Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://www.postgresql.org/message-id/flat/8528fb7e-0aa2-6b54-85fb-0c0886dbd6ed%40enterprisedb.com