tm1300 NXP Semiconductors, tm1300 Datasheet - Page 336
tm1300
Manufacturer Part Number
tm1300
Description
Tm-1300 Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.TM1300.pdf
(533 pages)
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TM1300 Data Book
fleqflags
SYNTAX
FUNCTION
DESCRIPTION
arguments exchanged (
be used in assembly source files.)
r src1 <=r src2 and stores a bit vector representing the exception flags into r dest . The argument values are in IEEE
single-precision floating-point format; the result is an integer bit vector. The bit vector stored in r dest has the same
format as the IEEE exception bits in the PCSW. The exception flags in PCSW are left unchanged by this operation. If
an argument is denormalized, zero is substituted before computing the comparison, and the IFZ bit in the result is set.
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is not changed.
EXAMPLES
A-50
r30 = 0x40400000 (3.0), r40 = 0 (0.0)
r30 = 0x40400000 (3.0)
r10 = 0, r60 = 0x3f800000 (1.0),
r30 = 0x40400000 (3.0)
r20 = 1, r60 = 0x3f800000 (1.0),
r30 = 0x40400000 (3.0)
r30 = 0x40400000 (3.0),
r60 = 0x3f800000 (1.0)
r30 = 0x40400000 (3.0),
r61 = 0xffffffff (QNaN)
r50 = 0x7f800000 (+INF)
r55 = 0xff800000 (-INF)
r60 = 0x3f800000 (1.0),
r65 = 0x00400000 (5.877471754e-39)
r50 = 0x7f800000 (+INF)
The
The
The
[ IF r guard ] fleqflags r src1 r src2
if r guard then
r dest
fleqflags
fleqflags
fleqflags
31
0
ieee_flags((float)r src1 <= (float)r src2 )
Initial Values
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
operation is a pseudo operation transformed by the scheduler into an
operation computes the IEEE exceptions that would result from computing the comparison
fleqflags
PRODUCT SPECIFICATION
’s r src1 is
fleqflags r30 r40
fleqflags r30 r30
IF r10 fleqflags r60 r30
IF r20 fleqflags r60 r30
fleqflags r30 r60
fleqflags r30 r61
fleqflags r50 r55
fleqflags r60 r65
fleqflags r50 r50
IEEE status flags from floating-point compare
fgeqflags
r dest
Operation
’s r src2 and vice versa). (Note: pseudo operations cannot
7
0
OFZ
r80
r90
r120
r121
r125
r126
r127
6
IFZ
5
r100
r110
INV
4
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r80
r90
no change, since guard is false
r110
r120
r121
r125
r126
r127
OVF
3
fleq ileq fgeqflags
pseudo-op for fgeqflags
Philips Semiconductors
less-than or equal
0
0
UNF
0
0
0x10 (INV)
0
0x20 (IFZ)
0
ATTRIBUTES
2
SEE ALSO
readpcsw
fgeqflags
Result
INX
1
DBZ
0
fcomp
with the
147
No
—
2
1
3
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