Ln

Function Ln

The Ln function computes computes a natural logarithm 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	9.25	10.81	5.24
	LA	8.33	8.41	5.23
	EP	6.17	5.31	5.21
double	HA	10.85	13.37	6.27
	LA	10.85	13.37	6.27
	EP	8.30	10.79	6.25

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:

		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	0.50
	LA	0.90	0.90	0.50
	EP	36.90	36.90	0.50
double	HA	0.53	0.53	0.50
	LA	0.53	0.53	0.50
	EP	3.79E+05	3.79E+05	0.50

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

Performance Graphs:

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