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:

		Intel(R) Xeon(R) processor 5100 Series	45nm Intel(R) Core(TM)2 Duo Processor	Intel(R) Itanium(R) 2 processor
single	HA	24.97	24.31	9.47
	LA	23.86	21.70	9.47
	EP	23.86	21.64	9.47
double	HA	50.63	46.60	21.78
	LA	50.63	46.60	21.78
	EP	50.63	46.60	21.78

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:

		Intel(R) Xeon(R) processor 5100 Series	45nm Intel(R) Core(TM)2 Duo Processor	Intel(R) Itanium(R) 2 processor
single	HA	0.52	0.52	0.50
	LA	0.53	0.53	0.50
	EP	0.54	0.54	0.50
double	HA	0.52	0.50	0.50
	LA	0.52	0.52	0.50
	EP	0.53	0.53	0.50

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

Performance Graphs:

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