Altera Floating-Point - Manual (Page 109)

Table 15-4: ALTFP_ABS Output Signals
Port Name Required Description
result[]
Yes The absolute value result of the input data. The size of this
port corresponds to the size of the input
data[]
port.
zero
No Zero exception output carried from the input. Asserted if the
corresponding carry-through port from the input is asserted.
nan
No NaN output carried from the input. Asserted if the
corresponding carry-through port from the input is asserted.
overflow
No Overflow exception output carried from the input. Asserted
if the corresponding carry-through port from the input is
asserted.
underflow
No Underflow exception output carried from the input. Asserted
if the corresponding carry-through port from the input is
asserted.
division_by_zero
No Division-by-zero exception output carried from the input.
Asserted if the corresponding carry-through port from the
input is asserted.
ALTFP_ABS Parameters
Table 15-5: ALTFP_ABS Parameters
Port Name Type Required Description
WIDTH_EXP
Integer Yes Specifies the precision of the exponent. If this
parameter is not specified, the default is
8
. The
bias of the exponent is always set to
2
(WIDTH_
EXP - 1) -
1
, that is,
127
for the single-precision
format and
1023
for the double-precision
format. The value of
WIDTH_EXP
must be
8
for
the single-precision format,
11
for the double-
precision format, and a minimum of
11
for the
single-extended precision format. The value of
WIDTH_EXP
must be less than the value of
WIDTH_
MAN
, and the sum of
WIDTH_EXP
and
WIDTH_MAN
must be less than
64
.
UG-01058
2014.12.19
ALTFP_ABS Parameters 15-5
ALTFP_ABS IP Core Altera Corporation
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