ARM VERSION 1.2 - Manual (Page 273)

Vector Floating-point Programming
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 6-35
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:
<precision>
must be either S for single-precision, or D for double-precision.
cond is an optional condition code (see VFP and condition codes on page 6-8).
Fd is a VFP register for the result. The precision of Fd must match the
precision specified in <precision> .
Sm is a single-precision VFP register holding the integer operand.
Usage
The FSITO instruction converts the signed integer value in Sm to floating-point and places
the result in Fd .
The FUITO instruction converts the unsigned integer value in Sm to floating-point and
places the result in Fd .
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