tm1300 NXP Semiconductors, tm1300 Datasheet - Page 346
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
fsqrtflags
SYNTAX
FUNCTION
DESCRIPTION
r src1 and stores a bit vector representing the exception flags into r dest . The argument value is 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. Rounding is
according to the IEEE rounding mode bits in PCSW. If the argument is denormalized, zero is substituted before
computing the squareroot, and the IFZ bit in the result is set. If the result is denormalized, and the OFZ flag in the
PCSW 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-60
r60 = 0xc0400000 (–3.0)
r40 = 0x40400000 (3.0)
r10 = 0, r40 = 0x40400000 (3.0)
r20 = 1, r40 = 0x40400000 (3.0)
r82 = 0x00c00000 (1.763241526e–38)
r84 = 0x7f800000 (+INF)
r70 = 0x7f7fffff (3.402823466e+38)
r80 = 0x00400000 (5.877471754e-39)
The
The
[ IF r guard ] fsqrtflags r src1
if r guard then
fsqrtflags
fsqrtflags
r dest
31
0
Initial Values
ieee_flags(square_root((float)r src1 ))
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
operation computes the IEEE exceptions that would result from computing the squareroot of
PRODUCT SPECIFICATION
IEEE status flags from floating-point square root
fsqrtflags r60
fsqrtflags r40
IF r10 fsqrtflags r40
IF r20 fsqrtflags r40
fsqrtflags r82
fsqrtflags r84
fsqrtflags r70
fsqrtflags r80
r dest
Operation
7
0
r90
r95
r112
r113
r120
r125
OFZ
6
r100
r110
IFZ
5
INV
4
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Recovery
Issue slots
r90
r95
no change, since guard is false
r110
r112
r113
r120
r125
OVF
3
Philips Semiconductors
0x10 (INV)
0x2 (INX)
0x2 (INX)
0x2 (INX)
0
0x2 (INX)
0x20 (IFZ)
fsqrt readpcsw
UNF
ATTRIBUTES
2
SEE ALSO
Result
INX
1
DBZ
0
ftough
111
No
—
17
16
1
2
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