Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 3 REV 2.3 Manual page 101
Architecture software developer's manual revision 2.3
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fnmpy
fnmpy — Floating-point Negative Multiply
(
) fnmpy.
Format:
qp
The product FR
Description:
resulting value is then 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. The rounded result
is placed in FR
If either FR
The mnemonic values for the opcode's pc are given in
mnemonic values for sf are given in
interpretation of the status field's pc, wre, and rc, refer to
page
1:90.
Operation:
See "fnma — Floating-point Negative Multiply Add" on page 3:90.
3:92
.
=
,
pc
sf f
f
f
1
3
4
and FR
is computed to infinite precision and then negated. The
f
f
3
4
.
f
1
or FR
is a NaTVal, FR
f
f
3
4
pseudo-op of: (
) fnma.
qp
is set to NaTVal instead of the computed result.
f
1
Table 2-22 on page
Table 2-23 on page
3:56. For the encodings and
Table 5-5
.
=
,
,f0
pc
sf f
f
f
1
3
4
3:56. The
and
Table 5-6 on
Volume 3: Instruction Reference
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