Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 3 REV 2.3 Manual page 124

fpmpy — Floating-point Parallel Multiply
( ) fpmpy.
Format: qp
The pair of products of the pairs of single precision values in the significand fields of FR
Description:
and FR
f f
3
single precision using the rounding mode specified by FPSR.sf.rc. The pair of rounded
results are stored in the significand field of FR
biased exponent for 2.0
If either FR
results.
The mnemonic values for sf are given in
The encodings and interpretation for the status field's rc are given in
page 1:90.
Operation: See "fpma — Floating-point Parallel Multiply Add" on page 3:107.
Volume 3: Instruction Reference
= ,
sf f f f
1 3 4
are computed to infinite precision. The resulting values are then rounded to
4
63
(0x1003E) and the sign field of FR
, or FR is a NaTVal, FR
f f
3 4
pseudo-op of: ( ) fpma.
qp
. The exponent field of FR
f
1
f
is set to NaTVal instead of the computed
f
1
Table 2-23 on page 3:56.
fpmpy
= , , f0
sf f f f
1 3 4
is set to the
f
1
is set to positive (0).
1
Table 5-6 on
3:115