Arm VERSION 1.2 Bedienungsanleitung PDF herunterladen (Seite 274)

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101

Vector Floating-point Programming

6.7.17 FSQRT

Floating-point square root instruction. This instruction can be scalar, vector, or mixed

(see Vector and scalar operations on page 6-7).

Syntax

FSQRT<precision>{cond} Fd, Fm

where:

must be either

for single-precision, or

for double-precision.

cond

is an optional condition code (see VFP and condition codes on page 6-8).

is the VFP register for the result.

is the VFP register holding the operand.

The precision of

and

must match the precision specified in

Usage

The

FSQRT

instruction calculates the square root of the value of the contents of

and

places the result in

Exceptions

FSQRT

operations can produce Invalid Operation or Inexact exceptions.

Examples

FSQRTS s4, s28

FSQRTD d14, d6

FSQRTSNE s15, s13

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