Altera Floating-Point User Manual
Page 101
Table 13-4: ALTFP_ATAN Parameters
Parameter
Name
Type
Required
Description
WIDTH_EXP
Integer
Yes
Specifies the precision of the exponent. The bias of the
exponent is always set to
2
(
WIDTH_EXP
-1) -1 (that is,
127
for
single-precision format). The value of
WIDTH_EXP
must be
8
for single-precision format. The default value for
WIDTH_
EXP
is
8
.
WIDTH_MAN
Integer
Yes
Specifies the precision of the mantissa. The value of
WIDTH_
MAN
must be
23
when
WIDTH_EXP
is
8
. The default value for
WIDTH_MAN
is
23
.
PIPELINE
Integer
Yes
The number of pipeline is fixed for the mantissa width and
some internal parameter. For the correct settings, refer to
Table 12–1 on page 12–2.
ROUNDING
Integer
No
Specifies the rounding mode. The default value is
TO_
NEAREST
. Other rounding modes are not supported.
UG-01058
2014.12.19
ALTFP_ATAN Parameters
13-3
ALTFP_ATAN IP Core
Altera Corporation