Zfh Extension

Versions

Version 1.0.0

State

ratified

Ratification date

2021-11

Synopsis

16-bit half-precision binary floating-point instructions compliant with the IEEE 754-2008 arithmetic standard. The Zfh extension depends on the single-precision floating-point extension, F. The NaN-boxing scheme is extended to allow a half-precision value to be NaN-boxed inside a single-precision value (which may be recursively NaN-boxed inside a double- or quad-precision value when the D or Q extension is present).

Instructions

The following instructions are affected by this extension:

fadd.h

No synopsis available

fclass.h

No synopsis available

fcvt.h.w

Floating-point Convert Word to Half-precision

fcvt.h.wu

Floating-point Convert Unsigned Word to Half-precision

fcvt.w.h

Floating-point Convert Half-precision to Word

fcvt.wu.h

Floating-point Convert Half-precision to Word

fdiv.h

No synopsis available

feq.h

No synopsis available

fle.h

No synopsis available

flt.h

No synopsis available

fmadd.h

No synopsis available

fmax.h

No synopsis available

fmin.h

No synopsis available

fmsub.h

No synopsis available

fmul.h

No synopsis available

fnmadd.h

No synopsis available

fnmsub.h

No synopsis available

fsgnj.h

No synopsis available

fsgnjn.h

No synopsis available

fsgnjx.h

No synopsis available

fsqrt.h

No synopsis available

fsub.h

No synopsis available