Altfp_exp resource utilization and performance, Altfp_exp resource utilization and performance -2 – Altera Floating-Point User Manual
Page 76
DATAA[]
Calculation
RESULT[]
NaN
Overflow
Underflow
Zero
Normal (numbers
of small magnitude)
edata
1
0
0
1
0
Normal (negative
numbers of large
magnitude)
edata
0
0
0
1
0
Denormal
e0
1
0
0
0
0
Zero
e0
1
0
0
0
0
Infinity (+)
e+
Infinity
0
0
0
0
Infinity (-)
e-
0
0
0
0
1
NaN
—
NaN
1
0
0
0
ALTFP_EXP Resource Utilization and Performance
This table lists the resource utilization and performance information for the ALTFP_EXP IP core. The
information was derived using the Quartus II software version 10.0.
Table 9-2: ALTFP_EXP 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
17
631
521
448
19
284
Double
25
4,104
2,007
2,939
46
279
ALTFP_EXP Design Example: Exponential of Single-Precision Format
Numbers
This design example uses the ALTFP_EXP IP core to compute the exponential value of single-precision
format numbers. This example uses the MegaWizard Plug-In Manager 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
(2)
Any denormal input is treated as a zero before going through the exponential process.
9-2
ALTFP_EXP Resource Utilization and Performance
UG-01058
2014.12.19
Altera Corporation
ALTFP_EXP IP Core