Function Inv

 

The Inv function performs element by element inversion of the real vector.

 

Performance:

 
 Intel(R) Xeon(R) processor 5100 Series  45nm Intel(R)
Core(TM)2 Duo Processor
Intel(R) Itanium(R) 2 processor
single HA 4.36 3.10 3.13
LA 3.06 1.96 3.13
EP 1.37 1.36 3.13
double HA 10.12 5.70 4.34
LA 6.70 5.70 4.14
EP 6.50 5.70 4.14

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ 0.1 ; 10000.0 ]; single precision: [ 0.1 ; 10000.0 ])
3) Data - vectors of 1000 elements with random generated numbers.

Accuracy:

 

 Intel(R) Xeon(R) processor 5100 Series  45nm Intel(R)
Core(TM)2 Duo Processor
Intel(R) Itanium(R) 2 processor
single HA 0.50 0.50 0.50
LA 3.08 3.08 0.50
EP 4.97E+03 4.97E+03 0.50
double HA 0.50 0.50 0.50
LA 2.80 2.80 0.50
EP 2.80 2.80 0.50

Note: Units - ULP (Units in The Last Place).

 

 

Performance Graphs:

     

 

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