Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1035
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fsub
fsub — Floating-point Subtract
(
) fsub.
Format:
qp
pc
FR
is subtracted from FR
Description:
f
2
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
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 "fms — Floating-point Multiply Subtract" on page 3:86.
3:136
.
=
,
sf f
f
f
1
3
2
(computed to infinite precision), rounded to the precision
f
3
or FR
is a NaTVal, FR
f
f
3
2
pseudo-op of: (
) fms.
qp
.
f
1
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
.
=
, f1,
pc
sf f
f
f
1
3
2
3:56. The
and
Table 5-6 on
Volume 3: Instruction Reference
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