PNX1300 Philips, PNX1300 Datasheet - Page 372

• Manufacturer Part Number: PNX1300
• Description: Media Processors
• Manufacturer: Philips

Philips Semiconductors
Absolute value
pseudo-op for h_iabs
SYNTAX
FUNCTION
DESCRIPTION
argument and a second argument equal to the
assembly source files.)
integer; the result is an unsigned integer.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
r30 = 0xffffffff
r10 = 0, r40 = 0xfffffff4
r20 = 1, r40 = 0xfffffff4
r50 = 0x80000001
r60 = 0x80000000
r20 = 1
The
The
The
[ IF rguard ] iabs rsrc1
if rguard then {
}
if rsrc1 < 0 then
else
iabs
iabs
rdest
rdest
iabs
Initial Values
operation computes the absolute value of rsrc1 and stores the result into rdest. The argument is a signed
operation is a pseudo operation transformed by the scheduler into an
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
–rsrc1
rsrc1
iabs r30
IF r10 iabs r40
IF r20 iabs r40
iabs r50
iabs r60
iabs r20
rdest
iabs
r60
r100
r110
r120
Operation
argument. (Note: pseudo operations cannot be used in
PRELIMINARY SPECIFICATION
r80
r90
PNX1300/01/02/11 DSPCPU Operations
h_iabs dspiabs dspidualabs
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r60
no change, since guard is false
r90
r100
r110
r120
h_iabs
0x00000001
0xc
0x7fffffff
0x80000000
1
ATTRIBUTES
SEE ALSO
fabsval
with zero as the first
Result
1, 2, 3, 4, 5
iabs
alu
No
44
—
1
1
A-74