Function abs

factory/cf_algorithm.h:116–125

inline CanonicalForm abs ( const CanonicalForm & f ) * * abs() - return absolute value of `f'. * * The absolute value is defined in terms of the function * `sign()'. If it reports negative sign for `f' than -`f' is * returned, otherwise `f'. * * This behaviour is most useful for integers and rationals. But * it may be used to sign-normalize the leading coefficient of * arbitrary polyno

 *
**/
inline CanonicalForm
abs ( const CanonicalForm & f )
{
    // it is not only more general to use `sign()' instead of a
    // direct comparison `f < 0', it is faster, too
    if ( sign( f ) < 0 )
        return -f;
    else
        return f;
}
//}}}

/*ENDPUBLIC*/