ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

A2.7.1 ARM standard floating-point input and output values
Application Level Programmers’ Model
ARM standard floating-point arithmetic supports the following input formats defined by the IEEE 754
floating-point standard:
Zeros.
Normalized numbers.
Denormalized numbers are flushed to 0 before floating-point operations. For details, see
Flush-to-zero on page A2-39.
NaNs.
Infinities.
ARM standard floating-point arithmetic supports the Round to Nearest rounding mode defined by the IEEE
754 standard.
ARM standard floating-point arithmetic supports the following output result formats defined by the IEEE
754 standard:
Zeros.
Normalized numbers.
Results that are less than the minimum normalized number are flushed to zero, see Flush-to-zero on
page A2-39.
NaNs produced in floating-point operations are always the default NaN, see NaN handling and the
Default NaN on page A2-41.
Infinities.
ARM DDI 0406B Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. A2-33