Arm VERSION 1.2 Manual do Utilizador descarregar pdf (Página 273)

100

101

Vector Floating-point Programming

6.7.16 FSITO and FUITO

Convert signed integer to floating-point and unsigned integer to floating-point.

FSITO

and

FUITO

are always scalar.

Syntax

FSITO<precision>{cond} Fd, Sm

FUITO<precision>{cond} Fd, Sm

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 a VFP register for the result. The precision of

must match the

precision specified in

is a single-precision VFP register holding the integer operand.

Usage

The

FSITO

instruction converts the signed integer value in

to floating-point and places

the result in

The

FUITO

instruction converts the unsigned integer value in

to floating-point and

places the result in

Exceptions

FSITOS

and

FUITOS

instructions can produce Inexact exceptions.

FSITOD

and

FUITOD

instructions do not produce any exceptions.

Examples

FUITOD d3, s31 ; unsigned integer to double-precision

FSITOD d5, s16 ; signed integer to double-precision

FSITOSNE s2, s2 ; signed integer to single-precision

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