"3.32 Int Encodings and 3.3.3 Real Encodings have charts with unknown sigla for encodings:

3.3.2

u1
u2
s4
s8

3.3.3
f4
f8

Wikipedia says that s8 has 20 possible uses, none of which are ""Signed 64-bit integer value."" http://en.wikipedia.org/wiki/S8

Wikipedia says that f8 has 15 possible uses, none of which are ""64-bit IEEE floating point value"" http://en.wikipedia.org/wiki/F8

The IEEE names for f4 an f8, respectively are: binary32 and binary64. I suspect s4 and s8 are decimal32 and decimal64, respectively."