Ln

Function Ln

The Ln function computes computes a natural logarithm 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	76.54	65.89	21.21
	LA	47.33	39.76	21.21
	EP	47.33	39.76	21.20
double	HA	141.41	123.44	27.24
	LA	141.36	123.22	27.24
	EP	141.35	123.22	27.24

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	0.75	0.75	0.50
	LA	2.44	2.44	0.50
	EP	2.44	2.44	0.50
double	HA	0.65	0.65	0.50
	LA	0.65	0.65	0.50
	EP	0.71	0.71	0.52

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

Performance Graphs:

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