| Name: | Sign - returns the sign of its argument
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| Synopsis: |
integer Sign -1,0, or 1
double Sign -1,0, or 1
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| Parameters: |
The return value is always an integer
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| 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.
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| Author: | Diesmann
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| FirstVersion: | 2007.11.28
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| References: |
[1] The Mathematica Book "Sign"
| SeeAlso: | UnitStep abs |
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| Source: | /home/abuild/rpmbuild/BUILD/nest-2.4.1/lib/sli/mathematica.sli
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