First byte of Single Field Scaled Number (SFSN)

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Imported from previous forum

2

Hello,

Could you please clarify following question:
First byte of SFSN does not contain stop bit. There is one special value (-64) that says that we should stop parsing and our value is NULL. So values -65, -66, etc can be used as exponent?

Thank you.

3

Hi Sergey,

I assume you refer to the 1.0 FAST Transfer Encoding Specification
section 2.1.2.1

SFSN will be removed in 1.1 and Twin Field Scaled Number will be
renamed to Scaled Number.

I suggest you have a look at the draft 1.1 spec.

(On a side note: -65, -66, … cannot be represented using a
single byte (7 bits). The value range is -64 to +63)

Best,
Rolf

Hello,

Could you please clarify following question: First byte of SFSN does not
contain stop bit. There is one special value (-64) that says that we
should stop parsing and our value is NULL. So values -65, -66, etc can
be used as exponent?

Thank you.