Log1p

Function Log1p

The Log1p function computes natural logarithm of vector elements that are increased by 1.

Performance:

		Intel(R) Xeon(R) processor 5100 Series	45nm Intel(R) Core(TM)2 Duo Processor	Intel(R) Itanium(R) 2 processor
single	HA	37.95	37.70	147.46
	LA	36.66	34.52	147.46
	EP	36.66	34.52	147.46
double	HA	39.10	36.68	141.73
	LA	39.10	35.04	141.50
	EP	39.06	35.04	141.45

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [1.0 ; 999.0]; single precision: [1.0 ; 999.0])
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	0.55	0.55	0.55
	LA	0.55	0.55	0.55
	EP	0.55	0.55	0.55
double	HA	0.55	0.55	0.55
	LA	0.55	0.55	0.55
	EP	0.55	0.55	0.55

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

Performance Graphs:

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