Atan

Function Atan

The Atan function computes an inverse tangent of complex 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	661.46	588.94	959.83
	LA	656.89	588.94	959.04
	EP	656.89	588.94	959.04
double	HA	635.58	588.05	920.27
	LA	635.58	588.05	920.27
	EP	635.18	557.60	920.27

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [0.01, 20.00] × [0.01, 20.00]; single precision: [0.01, 20.00] × [0.01, 20.00])
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	0.50	0.50	0.50
	EP	0.50	0.50	0.50
double	HA	0.50	0.50	0.50
	LA	0.50	0.50	0.50
	EP	0.50	0.50	0.50

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

Performance Graphs:

Legal Information