On 13-7-2019 11:10, Mark Rotteveel wrote:
I propose that for Firebird 4 we bring this inline with the standard:
1. Change and document FLOAT(p) to apply precision in binary digits,
that is:
- p in [1, 24] is a 32 bit single precision
- p in [25, 53] is a 64 bit double precision
- p < 1 and p > 53 are an error (in the future we could consider adding
support for higher precision formats like binary128 (p in [54, 113]) and
binary256 (p in [114, 237]))
2. Document that FLOAT (without precision) is a synonym for FLOAT(24).
3. Document DOUBLE PRECISION as a synonym of FLOAT(53)
4. Document REAL as a synonym of FLOAT(24)
5. Document LONG FLOAT as a synonym of FLOAT(53)
Minor addition: LONG FLOAT(p) also exists, so document p in [1,53] is a
64 bit double precision. Number out of that range are an error.
Mark
--
Mark Rotteveel
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