1: static char Sccsid[] = "a7.c @(#)a7.c	1.1	10/1/82 Berkeley ";
   2: #include "apl.h"
   3: 
   4: ex_iprod()
   5: {
   6:     register i, j;
   7:     struct item *p, *q, *r;
   8:     int param[10], ipr1();
   9:     data (*fn)();
  10: 
  11:     param[0] = exop[*pcp++];
  12:     param[1] = exop[*pcp++];
  13:     p = fetch2();
  14:     q = sp[-2];
  15:     if(p->type != DA || q->type != DA)
  16:         error("iprod T");
  17:     /*
  18: 	 * extend scalars to match corresponding arg
  19: 	 */
  20:     if(scalar(p)) {
  21:         if(scalar(q)){
  22:             r = newdat(DA, 0, 1);
  23:             fn = param[1];
  24:             r->datap[0] = (*fn)(p->datap[0], q->datap[0]);
  25:             goto out;
  26:         }
  27:         r = extend(DA, q->dim[0], p->datap[0]);
  28:         pop();
  29:         *sp++ = p = r;
  30:     }
  31:     if(scalar(q)){
  32:         r = extend(DA,p->dim[p->rank - 1], q->datap[0]);
  33:         free(sp[-2]);
  34:         sp[-2] = q = r;
  35:     }
  36:     bidx(p);
  37:     idx.rank--;
  38:     param[2] = idx.dim[idx.rank];
  39:     if((param[2] != q->dim[0]))
  40: /*	&& (param[2] != 1)	*/
  41: /*	&& (q->dim[0] != 1)	*/
  42:         error("inner prod C");
  43:     param[3] = q->size/param[2];
  44:     for(i=1; i<q->rank; i++)
  45:         idx.dim[idx.rank++] = q->dim[i];
  46:     r = newdat(DA, idx.rank, size());
  47:     copy(IN, idx.dim, r->dim, idx.rank);
  48:     param[4] = 0;
  49:     param[5] = 0;
  50:     param[6] = p->datap;
  51:     param[7] = q->datap;
  52:     param[8] = r->datap;
  53:     param[9] = p->size;
  54:     forloop(ipr1, param);
  55: out:
  56:     pop();
  57:     pop();
  58:     /*
  59: 	 * KLUDGE (we need the dim[0]'s for above stuff to work)
  60: 	 */
  61:     if(r->rank == 1 && r->size == 1)
  62:         r->rank = 0;
  63:     *sp++ = r;
  64: }
  65: 
  66: ipr1(param)
  67: int param[];
  68: {
  69:     register i, dk;
  70:     int lk, a, b;
  71:     data *dp1, *dp2, *dp3;
  72:     data (*f1)(), (*f2)(), d;
  73: 
  74:     f1 = param[0];
  75:     f2 = param[1];
  76:     dk = param[2];
  77:     lk = param[3];
  78:     a = param[4];
  79:     b = param[5];
  80:     dp1 = param[6];
  81:     dp2 = param[7];
  82:     dp3 = param[8];
  83:     a += dk;
  84:     b += (dk * lk);
  85:     for(i=0; i<dk; i++) {
  86:         a--;
  87:         b -= lk;
  88:         d = (*f2)(dp1[a], dp2[b]);
  89:         if(i == 0)
  90:             datum = d; else
  91:             datum = (*f1)(d, datum);
  92:     }
  93:     *dp3++ = datum;
  94:     param[8] = dp3;
  95:     param[5]++;
  96:     if(param[5] >= lk) {
  97:         param[5] = 0;
  98:         param[4] += dk;
  99:         if(param[4] >= param[9])
 100:             param[4] = 0;
 101:     }
 102: }
 103: 
 104: ex_oprod()
 105: {
 106:     register i, j;
 107:     register data *dp;
 108:     struct item *p, *q, *r;
 109:     data *dp1, *dp2;
 110:     data (*f)();
 111: 
 112:     f = (data *)exop[*pcp++];
 113:     p = fetch2();
 114:     q = sp[-2];
 115:     if(p->type != DA || q->type != DA)
 116:         error("oprod T");
 117:     /*
 118: 	 * collapse 1 element vectors to scalars
 119: 	 *
 120: 	if(scalar(p))
 121: 		p->rank = 0;
 122: 	if(scalar(q))
 123: 		q->rank = 0;
 124: 	*/
 125:     bidx(p);
 126:     for(i=0; i<q->rank; i++)
 127:         idx.dim[idx.rank++] = q->dim[i];
 128:     r = newdat(DA, idx.rank, size());
 129:     copy(IN, idx.dim, r->dim, idx.rank);
 130:     dp = r->datap;
 131:     dp1 = p->datap;
 132:     for(i=0; i<p->size; i++) {
 133:         datum = *dp1++;
 134:         dp2 = q->datap;
 135:         for(j=0; j<q->size; j++)
 136:             *dp++ = (*f)(datum, *dp2++);
 137:     }
 138:     pop();
 139:     pop();
 140:     *sp++ = r;
 141: }

Defined functions

ex_iprod defined in line 4; used 3 times
ex_oprod defined in line 104; used 2 times
ipr1 defined in line 66; used 2 times
  • in line 8, 54

Defined variables

Sccsid defined in line 1; never used
Last modified: 1983-06-22
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