View source for sign

{{DavinciWiki_Function|Sign.
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Arguments: One numeric array
 
Return Value: A numeric array containing the signs of each element of the input; sign is -1 if negative, 0 if zero, and 1 if positive; format of output is short, regardless of input format

If no arguments are input, sign() prints its description, as shown below.
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[[Syntax]]: sign(x)
 
'x' - any numeric array
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 dv> sign()
 
 sign(x) returns sign of input
 1 if positive, -1 if negative, 0 if zero
 Works for arrays
 S.Marshall 12-07-2007
 
 0
 dv> sign(-2//-1//0//1//2)
 5x1x1 array of short, bsq format [10 bytes]
 -1      -1      0       1       1
 dv> sign(pi)
 1
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*[[isnum]]
*[[where]]
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*math.dvrc
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}}


[[category:Functions]]
[[category:User Defined Functions]]
[[category:Math]]