Function Erfc

 

The Erfc function computes the complementary error function value of real vector elements.

 

Performance:

 Intel(R) Xeon(R) processor 5100 Series  45nm Intel(R)
Core(TM)2 Duo processor
Intel(R) Itanium(R) 2 processor
single HA 29.18 28.84 8.44
LA 22.94 20.90 8.42
EP 11.24 10.37 8.42
double HA 63.12 62.83 16.74
LA 51.06 41.33 16.44
EP 45.13 41.24 16.44

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ 0.5 ; 5.9 ]; single precision: [ 1.0 ; 4.0 ])
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 0.52 0.52 0.53
LA 1.89 1.89 0.53
EP 3.67E+03 3.67E+03 0.53
double HA 0.51 0.51 0.51
LA 2.21 2.21 0.51
EP 2.62 2.62 0.51

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

 

 

Performance Graphs:

     

 

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