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FRECPE

Floating-point reciprocal estimate (unpredicated).

Find the approximate reciprocal of each floating-point element of the source vector, and place the results in the corresponding elements of the destination vector. This instruction is unpredicated.

313029282726252423222120191817161514131211109876543210
01100101size001110001100ZnZd

FRECPE <Zd>.<T>, <Zn>.<T>

if !HaveSVE() then UNDEFINED; if size == '00' then UNDEFINED; integer esize = 8 << UInt(size); integer n = UInt(Zn); integer d = UInt(Zd);

Assembler Symbols

<Zd>

Is the name of the destination scalable vector register, encoded in the "Zd" field.

<T> Is the size specifier, encoded in size:
size<T>
00RESERVED
01H
10S
11D
<Zn>

Is the name of the source scalable vector register, encoded in the "Zn" field.

Operation

CheckSVEEnabled(); integer elements = VL DIV esize; bits(VL) operand = Z[n]; bits(VL) result; for e = 0 to elements-1 bits(esize) element = Elem[operand, e, esize]; Elem[result, e, esize] = FPRecipEstimate(element, FPCR[]);(element, FPCR); Z[d] = result;


Internal version only: isa v32.12v32.06, AdvSIMD v29.04, pseudocode v2020-09_xmlv2020-06_rel, sve v2020-09_rc2bv2020-06_rel0 ; Build timestamp: 2020-09-30T192020-07-03T13:1613

Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

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