Sign


Name:
Sign - returns the sign of its argument
Synopsis:
 
integer Sign -1,0, or 1
double Sign -1,0, or 1
Description:
 
The C++ standard library does not define a sign function because
there is no general agreement on the return value for 0. The function
Sign implements the decision made for Mathematica: if the argument is
0, Sign returns 0.
Parameters:
 
The return value is always an integer
References:
 
[1] The Mathematica Book "Sign"
Author:
Diesmann  
FirstVersion:
2007.11.28  
SeeAlso: Source:
/home/nest/work/nest-2.14.0/lib/sli/mathematica.sli