Atan2pi
Computes the four-quadrant inverse tangent of the ratios of the corresponding elementss of two vectors divided by π.
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
|
10.57
|
10.93
|
8.82
|
5.58
|
LA
|
6.14
|
3.57
|
3.33
|
2.05
| |
EP
|
4.07
|
2.80
|
2.50
|
1.31
| |
double
|
HA
|
24.45
|
19.10
|
15.81
|
9.90
|
LA
|
16.52
|
13.88
|
11.88
|
7.67
| |
EP
|
11.66
|
10.81
|
9.39
|
4.89
| |
Notes:
- Units - CPE (Clocks per Element)
- Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ] × [ -18000.0, 18000.0 ]; single precision: [ -10000.0, 10000.0 ] × [ -18000.0, 18000.0 ])
- 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
|
0.83
|
0.82
|
0.82
|
0.82
|
LA
|
2.61
|
2.88
|
2.88
|
2.58
| |
EP
|
3.77E+03
|
3.77E+03
|
3.77E+03
|
3.77E+03
| |
double
|
HA
|
0.85
|
0.85
|
0.85
|
0.92
|
LA
|
3.37
|
3.37
|
3.37
|
3.60
| |
EP
|
2.19E+07
|
2.19E+07
|
2.19E+07
|
2.16E+07
| |
Note:
Units - ULP (Units in the Last Place).Performance Graphs:
