Erf

Function Erf

The Erf function computes the error function value of real vector elements.

Performance:

		Dual-Core Intel(R) Xeon(R) processor 5100 Series	45nm Intel(R) Core(TM)2 Duo processor	Intel(R) Itanium(R) 2 processor
single	HA	10.64	12.45	6.48
	LA	9.46	12.45	6.48
	EP	6.18	6.02	6.47
double	HA	14.24	17.12	13.56
	LA	12.84	16.09	13.15
	EP	12.18	15.58	13.15

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ 0.5, 5.9 ]; single precision: [ 1, 4 ])
3) Data - vectors of 1000 elements with random generated numbers.

Accuracy:

		Dual-Core 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	0.51
	LA	1.36	1.36	0.51
	EP	1.89E+03	1.89E+03	0.51
double	HA	0.76	0.76	0.50
	LA	1.15	1.15	0.50
	EP	1.18E+06	1.18E+06	0.50

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

Performance Graphs:

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