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Annotation of OpenXM_contrib2/asir2000/builtin/user.c, Revision 1.1

1.1     ! noro        1: /* $OpenXM$ */
        !             2:
        !             3: /* a sample file for adding builtin functions */
        !             4:
        !             5: #include "ca.h"
        !             6: #include "parse.h"
        !             7:
        !             8: void Ppartial_derivative();
        !             9: void partial_derivative(VL vl,P p,V v,P *r);
        !            10:
        !            11: struct ftab user_tab[] = {
        !            12: /*
        !            13:   {"partial_derivative",Ppartial_derivative,2},
        !            14: */
        !            15:   {0,0,0},
        !            16: };
        !            17:
        !            18: /*
        !            19: void Ppartial_derivative(NODE arg,P *rp)
        !            20: {
        !            21:   asir_assert(ARG0(arg),O_P,"partial_derivative");
        !            22:   asir_assert(ARG1(arg),O_P,"partial_derivative");
        !            23:   partial_derivative(CO,(P)ARG0(arg),((P)ARG1(arg))->v,rp);
        !            24: }
        !            25:
        !            26: void partial_derivative(VL vl,P p,V v,P *r)
        !            27: {
        !            28:   P t;
        !            29:   DCP dc,dcr,dcr0;
        !            30:
        !            31:   if ( !p || NUM(p) ) *r = 0;
        !            32:   else if ( v == p->v ) {
        !            33:     for ( dc = p->dc, dcr0 = 0; dc && dc->d; dc = dc->next ) {
        !            34:       mulp(vl,dc->c,(P)dc->d,&t);
        !            35:       if ( t ) {
        !            36:         NEXTDC(dcr0,dcr); subq(dc->d,ONE,&dcr->d); dcr->c = t;
        !            37:       }
        !            38:     }
        !            39:     if ( !dcr0 ) *r = 0;
        !            40:     else { dcr->next = 0; MKP(v,dcr0,*r); }
        !            41:   } else {
        !            42:     for ( dc = p->dc, dcr0 = 0; dc; dc = dc->next ) {
        !            43:       partial_derivative(vl,dc->c,v,&t);
        !            44:       if ( t ) { NEXTDC(dcr0,dcr); dcr->d = dc->d; dcr->c = t; }
        !            45:     }
        !            46:     if ( !dcr0 ) *r = 0;
        !            47:     else { dcr->next = 0; MKP(p->v,dcr0,*r); }
        !            48:   }
        !            49: }
        !            50: */