Developer Reference
Visible to Intel only — GUID: GUID-A76AB1EA-5666-4AF9-AEE0-3FA3962F7850
CopySign
Returns vector of elements of one argument with signs changed to match other argument elements.
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 | 0.43 | 0.45 | 0.35 | 0.14 |
LA | 0.43 | 0.45 | 0.35 | 0.14 | |
EP | 0.43 | 0.45 | 0.35 | 0.14 | |
double | HA | 2.35 | 0.83 | 0.65 | 0.23 |
LA | 2.34 | 0.83 | 0.65 | 0.23 | |
EP | 2.34 | 0.83 | 0.65 | 0.23 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ] for both arguments; single precision: [ -10000.0, 10000.0 ] for both arguments)
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:
Parent topic: Miscellaneous