Erf

Function Erf

The Erf function computes the 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	16.86	16.21	6.38
	LA	12.98	12.88	6.38
	EP	5.84	5.84	6.38
double	HA	34.21	32.03	10.89
	LA	30.55	30.02	10.73
	EP	30.55	30.00	10.73

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ 0.001 ; 0.874 ]; single precision: [ 0.001 ; 0.874 ])
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	1.32	1.32	0.50
	EP	1.89E+03	1.89E+03	0.50
double	HA	0.77	0.77	0.50
	LA	1.12	1.12	0.50
	EP	1.13	1.13	0.50

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

Performance Graphs:

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