quanta.sub - Function

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quanta.sub - Function

	Package	general
	Module	quanta
	Tool	quanta

subtract quantities

Synopsis
sub(v, a)

Arguments

v	in	value
		Allowed:	quantity or string
a	in	value
		Allowed:	quantity or string
		Default:	'0'

Returns
quantity

Description
sub subtracts two quantities

Example

- dq.sub('5m', '2yd')   
[value=3.1712, unit=m]

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2006-08-01