Logb
Computes the exponents of the elements of input vector a.
Performance:
Intel® Xeon® Processor E5-2680
|
Intel® Xeon® Processor E5-2699 v3
|
Intel® Xeon® Processor E5-2699 v4
|
Intel® Xeon® Gold 6148 Processor
| ||
|---|---|---|---|---|---|
single
|
HA
|
0.89
|
0.53
|
0.41
|
0.38
|
LA
|
0.89
|
0.53
|
0.40
|
0.38
| |
EP
|
0.89
|
0.53
|
0.40
|
0.38
| |
double
|
HA
|
3.89
|
1.03
|
0.80
|
0.71
|
LA
|
1.34
|
1.03
|
0.80
|
0.71
| |
EP
|
1.34
|
1.03
|
0.80
|
0.71
| |
Notes:
- Units - CPE (Clocks per Element)
- Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ]; single precision: [ -10000.0, 10000.0 ])
- Data - vectors of 1000 elements with random generated numbers.
- All data was collected with 64-bit libraries.
Accuracy:
Intel® Xeon® Processor E5-2680
|
Intel® Xeon® Processor E5-2699 v3
|
Intel® Xeon® Processor E5-2699 v4
|
Intel® Xeon® Gold 6148 Processor
| ||
|---|---|---|---|---|---|
single
|
HA
|
0.00
|
0.00
|
0.00
|
0.00
|
LA
|
0.00
|
0.00
|
0.00
|
0.00
| |
EP
|
0.00
|
0.00
|
0.00
|
0.00
| |
double
|
HA
|
0.00
|
0.00
|
0.00
|
0.00
|
LA
|
0.00
|
0.00
|
0.00
|
0.00
| |
EP
|
0.00
|
0.00
|
0.00
|
0.00
| |
Note:
Units - ULP (Units in the Last Place).Performance Graphs:
