Page 319 - ARM 64 Bit Assembly Language

308 Chapter 9

9.7.1.1 Syntax

frint<op> Fd, Fm

• <op> is one of a, i, m, n, p,or x.
• Fd and Fm must specify either two single precision registers or two double precision regis-
ters.

9.7.1.2 Operations

Name Effect Description
frintx Fd ← roundx(Fm) Round

9.7.1.3 Examples
1 frinta d3, d5 // Round d5 away from zero and store in d3
2 frintm s15, s15 // Round s5 towards negative infinity

9.7.2 Absolute value, negate, square root

The unary operations require one source register and a destination register. The source and
destination can be the same register. There are four unary operations:
fabs Absolute Value,
fneg Negate, and
fsqrt Square Root

9.7.2.1 Syntax

f<op> Fd, Fm

• <op> is one of abs, neg,or sqrt.
• Fd and Fm must specify either two single precision registers or two double precision regis-
ters.

9.7.2.2 Operations

Name Effect Description
fabs Fd ←|Fn| Absolute Value
fneg Fd ←−Fn Negate
√
fsqrt Fd ← Fn Square Root