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4.25.2 polytopeViaInequalities

Syntax:
polytopeViaInequalities( intmat IE )
polytopeViaInequalities( intmat IE, intmat E )
polytopeViaInequalities( intmat IE, intmat E, int flags )
Type:
cone
Purpose:
cone consisting of all points x, such that IE*x >= 0 in each component and (if stated) E*x = 0; flags may range between 0,..,3 defining an upper and lower bit (0=0*2+0, 1=0*2+1, 2=1*2+0, 3=1*2+1), if higher bit is 1, then program assumes each inequality yields a facet, if lower bit is 1, then program assumes the kernel of E is the span of the cone, if either bit is 0, then program computes the information itself.
Example:
 

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            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.