RISC-V ISA Explorer · Float & Numerics (Zf*)

Zfhmin: Minimal Half-Precision FP

Ratified 2021-11 · version 1.0.0

Half-precision load, store, and conversion only, for code that stores in 16 bits but computes wider.

Typical use: Conversions, no arithmetic

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Dependencies

Requires

F

Required by

Instructions (10)

Mnemonic	Name	Encoding	Match	Mask
`FCVT.D.H`		`010000100010-------------1010011`	`0x42200053`	`0xfff0007f`
`FCVT.H.D`	Floating-point Convert Double-precision to Half-precision	`010001000001-------------1010011`	`0x44100053`	`0xfff0007f`
`FCVT.H.Q`	Floating-point Convert Quad-precision to Half-precision	`010001000011-------------1010011`	`0x44300053`	`0xfff0007f`
`FCVT.H.S`	Convert single-precision float to a half-precision float	`010001000000-------------1010011`	`0x44000053`	`0xfff0007f`
`FCVT.Q.H`	Floating-point Convert Half-precision to Quad-precision	`010001100010-------------1010011`	`0x46200053`	`0xfff0007f`
`FCVT.S.H`	Convert half-precision float to a single-precision float	`010000000010-------------1010011`	`0x40200053`	`0xfff0007f`
`FLH`	Half-precision floating-point load	`-----------------001-----0000111`	`0x1007`	`0x707f`
`FMV.H.X`	Half-precision floating-point move from integer	`111101000000-----000-----1010011`	`0xf4000053`	`0xfff0707f`
`FMV.X.H`	Move half-precision value from floating-point to integer register	`111001000000-----000-----1010011`	`0xe4000053`	`0xfff0707f`
`FSH`	Half-precision floating-point store	`-----------------001-----0100111`	`0x1027`	`0x707f`