Altfp_inv resource utilization and performance, Altfp_inv resource utilization and performance -2 – Altera Floating-Point User Manual
Page 82
DATA[]
SIGN BIT
RESULT[]
Underflow
Zero
Division_by_
zero
NaN
Normal
0/1
Denormal
1
1
0
0
Normal
0/1
Infinity
0
0
0
0
Normal
0/1
Zero
1
1
0
0
Denormal
0/1
Infinity
0
0
1
0
Zero
0/1
Infinity
0
0
1
0
Infinity
0/1
Zero
0
1
0
0
NaN
X
NaN
0
0
0
1
ALTFP_INV Resource Utilization and Performance
This table lists the resource utilization and performance information for the ALTFP_INV IP core. The
information was derived using the Quartus II software version 10.0.
Table 10-2: ALTFP_INV Resource Utilization and Performance for Stratix IV Devices
Device Family
Precision
Output
Latency
Logic usage
f
MAX
(MHz)
Adaptive
Look-Up
Tables
(ALUTs)
Dedicated
Logic
Registers
(DLRs)
Adaptive
Logic
Modules
(ALMs)
18-Bit DSP
Stratix IV
Single
20
401
616
373
16
412
Double
27
939
1,386
912
48
203
ALTFP_INV Design Example: Inverse of Single-Precision Format Numbers
This design example uses the ALTFP_INV IP core to compute the inverse of single-precision format
numbers. This example uses the parameter editor in the Quartus II software.
Related Information
•
Floating-Point IP Cores Design Example Files
on page 1-16
•
Provides the design example files for the Floating-Point IP cores
•
Provides information about installation, usage, and troubleshooting
(3)
Any calculated or computed denormal output is replaced by a zero and asserts the zero and underflow flags.
(4)
Any denormal input is treated as a zero before going through the inverse process.
10-2
ALTFP_INV Resource Utilization and Performance
UG-01058
2014.12.19
Altera Corporation
ALTFP_INV IP Core