Sub

Function Sub

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

Performance:

		Intel(R) Xeon(R) processor 5100 Series	45nm Intel(R) Core(TM)2 Duo Processor	Intel(R) Itanium(R) 2 processor
single	HA	4.04	4.03	3.54
	LA	4.04	4.03	3.54
	EP	4.04	4.03	3.54
double	HA	7.15	7.20	3.47
	LA	7.15	7.20	3.47
	EP	7.15	7.20	3.47

Notes:
1) Units - CPE (Clocks per Element)
2) Performance was measured on "working" interval (double precision: [ -10000 ; 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:

		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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