Intel Itanium 9150M, Manual

Page: 65 / 420

3:56 Volume 3: Instruction Reference
fadd
fadd — Floating-point Add
Format: (
qp
) fadd.
pc
.
sf f
1
=
f
3
,
f
2
pseudo-op of: (
qp
) fma.
pc
.
sf f
1
=
f
3
, f1,
f
2
Description:
FR
f
3
and FR
f
2
are added (computed to infinite precision), rounded to the precision
indicated by
pc
(and possibly FPSR. sf . pc and FPSR. sf . wre ) using the rounding mode
specified by FPSR. sf . rc , and placed in FR
f
1
. If either FR
f
3
or FR
f
2
is a NaTVal, FR
f
1
is set
to NaTVal instead of the computed result.
The mnemonic values for the opcode’s
pc
are given in Table 2-22 . The mnemonic values
for
sf
are given in Table 2-23 . For the encodings and interpretation of the status field’s
pc , wre , and rc , refer to Table 5-5 and Table 5-6 on page 1:90 .
Operation: See “fma — Floating-point Multiply Add” on page 3:77.
Table 2-22. Specified pc Mnemonic Values
pc Mnemonic Precision Specified
.s single
.d double
none dynamic
(i.e. use pc value in status field)
Table 2-23. sf Mnemonic Values
sf Mnemonic Status Field Accessed
.s0 or none sf0
.s1 sf1
.s2 sf2
.s3 sf3