Developer Reference
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Acos
Computes an inverse cosine of real vector 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 | 3.55 | 3.21 | 2.91 | 1.72 |
LA | 3.55 | 2.20 | 2.11 | 1.23 | |
EP | 3.55 | 1.91 | 1.73 | 1.01 | |
double | HA | 10.02 | 7.92 | 7.01 | 3.68 |
LA | 8.64 | 6.61 | 6.13 | 3.04 | |
EP | 6.63 | 4.83 | 4.33 | 2.33 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ -1.0, 1.0 ]; single precision: [ -1.0, 1.0 ])
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 | 0.75 | 0.75 | 0.75 | 0.75 |
LA | 1.63 | 1.57 | 1.57 | 1.51 | |
EP | 523.00 | 523.00 | 523.00 | 523.00 | |
double | HA | 0.76 | 0.76 | 0.76 | 0.76 |
LA | 1.46 | 1.36 | 1.36 | 1.50 | |
EP | 4.53E+06 | 4.53E+06 | 4.53E+06 | 4.53E+06 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Trigonometric Functions