Sub

Function Sub

The Sub function performs element by element subtraction of real vector b from real vector a.

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	0.88	0.82	1.38
	LA	0.88	0.82	1.38
	EP	0.88	0.82	1.38
double	HA	1.62	1.56	1.52
	LA	1.62	1.56	1.52
	EP	1.62	1.56	1.52

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [-10000.0, 10000.0] for both arguments; single precision: [-10000.0, 10000.0] 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	0.50	0.50	0.50
	LA	0.50	0.50	0.50
	EP	0.50	0.50	0.50
double	HA	0.50	0.50	0.50
	LA	0.50	0.50	0.50
	EP	0.50	0.50	0.50

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

Performance Graphs:

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