Zvfbfmin Extension

Versions

Version 1.0.0

State

ratified

Ratification date

2024-06

Synopsis

This extension provides the minimal set of instructions needed to enable vector support of the BF16 format. It enables BF16 as an interchange format as it provides conversion between BF16 values and FP32 values.

This extension depends upon either the V extension or the Zve32f embedded vector extension.

Instructions

The following instructions are affected by this extension:

vfncvtbf16.f.f.w

Vector narrowing single-precision to BFloat16 conversion

vfwcvtbf16.f.f.v

Vector widening BFloat16 to single-precision conversion