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-   -   What is neg(s)? (https://www.cfd-online.com/Forums/openfoam-solving/66579-what-neg-s.html)

sandy July 19, 2009 21:34
What is neg(s)?
 
Hi people,

What is the meanings about the operation neg(s)?

If s < 0, neg(s) = s ;
if s = 0, neg(s) = 0 ;
if s > 0, neg(s) = 0 .

Am I right. Pain for it!!

henrik July 20, 2009 02:43
Dear Sandy,

Have a look in $FOAM_SRC/OpenFOAM/lnInclude/Scalar.H where is states:

Code:
inline Scalar neg(const Scalar s)
{
    return (s < 0)? 1: 0;
}
Henrik


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