Difference between revisions of "Sign"

 
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* 1 when x>0
 
* 1 when x>0
 
* [[NaN]] when x is [[NaN]]  (with Warning)
 
* [[NaN]] when x is [[NaN]]  (with Warning)
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= Library =
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Math
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= Notes =
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This function was not built into Analytica until release 4.2.  It was common in 4.1 and earlier to define it as a [[User-Defined Functions|user-defined function]]:
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Function Sign(x) := if x<0 then -1 else if x>0 then 1 else 0
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= See Also =
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* [[Abs]]

Revision as of 05:37, 14 February 2009

Sign(x)

New to Analytica 4.2

The sign of a number.

Returns:

  • -1 when x<0
  • 0 when x=0
  • 1 when x>0
  • NaN when x is NaN (with Warning)

Library

Math

Notes

This function was not built into Analytica until release 4.2. It was common in 4.1 and earlier to define it as a user-defined function: 

Function Sign(x) := if x<0 then -1 else if x>0 then 1 else 0

See Also

Comments


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