Powx

Function Powx

The Powx function raises each element of a real vector to the constant power, that is, computes a to power b, where b is scalar.

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	14.55	16.39	10.14
	LA	14.22	16.39	10.14
	EP	14.22	16.39	10.14
double	HA	18.28	19.35	15.25
	LA	18.28	18.99	15.01
	EP	13.79	16.46	15.01

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ 5.0, 100.0 ] for both arguments; single precision: [ 0.1, 10.0 ] for both arguments)
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	0.96	0.79	0.50
	LA	4.09	4.09	0.50
	EP	4.09	911.00	0.50
double	HA	0.82	0.82	0.50
	LA	3.05	3.05	0.50
	EP	2.76E+07	2.80E+07	0.50

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

Performance Graphs:

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