v_print2, v_print3, m_print2, m_print3, v_scan2, v_scan3, v_inters2, v_dupl2, v_dupl3, m_dupl2, m_dupl3

       Herbert Hilhorst
       Klamer Schutte

                                                9 September 1992                                     GRAPHADD(3)

       These  routines  ar  an addition to grapmat(3). The *print routines print the appropriate data to stderr.
       The *scan routines read from stdin.  The *dupl routines copy data.  v_inters2  returns  the  intersection
       point  of  p1,p2  and  q1,q2  in S1 and S2. The return value is 0 if no intersection point is found, 1 if
       there is an intersection point, and two if the two lines do overlap. In that case, the two points are the
       extrema.

       v_print2, v_print3, m_print2, m_print3, v_scan2, v_scan3,  v_inters2, v_dupl2, v_dupl3, m_dupl2,  m_dupl3
       - additional 3d graphics and associated matrix and vector routines

       Naming conventions as in graphmat(3).

       Only  available  in  C++ and ANSI C. v_inters2 only in C++.  Library file is /usr/local/lib/libgraphmat.a
       and the C++ util files.

graphmat(3), graphmat++(3), Graphics and matrix routines.

#include<graphadd.h>voidv_print2(hvec2_tvec,constchar*name)voidv_print3(hvec3_tvec,constchar*name)voidm_print2(hmat2_tmat,constchar*name)voidm_print3(hmat3_tmat,constchar*name)intv_scan2(hvec2_t&vec)intv_scan3(hvec3_t&vec)intv_inters2(
       const hvec2_t &p1, const hvec2_t &p2, const hvec2_t &q1,
       const hvec2_t &q2, hvec2_t *S1, hvec2_t *S2)

       voidv_dupl2(hvec2_t*,hvec2_t*)voidv_dupl3(hvec3_t*,hvec3_t*)voidm_dupl2(hmat2_t*,hmat2_t*)voidm_dupl3(hmat3_t*,hmat3_t*)

       All the "functions" may have been implemented as macro's, so you can't take the address of a function. It
       is however guaranteed that arguments of each function/macro will be evaluated only once, except  for  the
       result argument, which can be evaluated multiple times.