Developer Reference
Intel® oneAPI Math Kernel Library Vector Mathematics Performance and Accuracy Data
                    
                        ID
                        772989
                    
                
                
                    Date
                    12/04/2020
                
                
                    Public
                
            NextAfter
Returns vector of elements containing the next representable floating-point values following the values from the elements of one vector in the direction of the corresponding elements of another vector.
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 | 6.72 | 1.11 | 0.87 | 0.62 | 
| LA | 2.30 | 1.11 | 0.87 | 0.62 | |
| EP | 2.30 | 1.11 | 0.86 | 0.62 | |
| double | HA | 10.44 | 2.77 | 2.19 | 2.02 | 
| LA | 10.44 | 2.77 | 2.19 | 2.02 | |
| EP | 10.44 | 2.77 | 2.19 | 2.02 | |
      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 argument) 
- 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