/* $OpenXM: OpenXM_contrib2/asir2000/engine/vect.c,v 1.1 1999/12/03 07:39:08 noro Exp $ */
#include "ca.h"
void addvect(vl,a,b,c)
VL vl;
VECT a,b,*c;
{
int len,i;
VECT t;
pointer *ab,*bb,*tb;
if ( !a )
*c = b;
else if ( !b )
*c = a;
else if ( a->len != b->len ) {
*c = 0; error("addvect : size mismatch");
} else {
len = a->len;
MKVECT(t,len);
for ( i = 0, ab = BDY(a), bb = BDY(b), tb = BDY(t); i < len; i++ )
addr(vl,(Obj)ab[i],(Obj)bb[i],(Obj *)&tb[i]);
*c = t;
}
}
void subvect(vl,a,b,c)
VL vl;
VECT a,b,*c;
{
int len,i;
VECT t;
pointer *ab,*bb,*tb;
if ( !a )
chsgnvect(b,c);
else if ( !b )
*c = a;
else if (a->len != b->len ) {
*c = 0; error("subvect : size mismatch");
} else {
len = a->len;
MKVECT(t,len);
for ( i = 0, ab = BDY(a), bb = BDY(b), tb = BDY(t);
i < len; i++ )
subr(vl,(Obj)ab[i],(Obj)bb[i],(Obj *)&tb[i]);
*c = t;
}
}
void mulvect(vl,a,b,c)
VL vl;
Obj a,b,*c;
{
if ( !a || !b )
*c = 0;
else if ( OID(a) <= O_R )
mulrvect(vl,a,(VECT)b,(VECT *)c);
else if ( OID(b) <= O_R )
mulrvect(vl,b,(VECT)a,(VECT *)c);
else
notdef(vl,a,b,c);
}
void divvect(vl,a,b,c)
VL vl;
Obj a,b,*c;
{
Obj t;
if ( !b )
error("divvect : division by 0");
else if ( !a )
*c = 0;
else if ( OID(b) > O_R )
notdef(vl,a,b,c);
else {
divr(vl,(Obj)ONE,b,&t); mulrvect(vl,(Obj)t,(VECT)a,(VECT *)c);
}
}
void chsgnvect(a,b)
VECT a,*b;
{
VECT t;
int len,i;
pointer *ab,*tb;
if ( !a )
*b = 0;
else {
len = a->len;
MKVECT(t,len);
for ( i = 0, ab = BDY(a), tb = BDY(t);
i < len; i++ )
chsgnr((Obj)ab[i],(Obj *)&tb[i]);
*b = t;
}
}
void mulrvect(vl,a,b,c)
VL vl;
Obj a;
VECT b,*c;
{
int len,i;
VECT t;
pointer *bb,*tb;
if ( !a || !b )
*c = 0;
else {
len = b->len;
MKVECT(t,len);
for ( i = 0, bb = BDY(b), tb = BDY(t); i < len; i++ )
mulr(vl,a,(Obj)bb[i],(Obj *)&tb[i]);
*c = t;
}
}
int compvect(vl,a,b)
VL vl;
VECT a,b;
{
int i,len,t;
if ( !a )
return b?-1:0;
else if ( !b )
return 1;
else if ( a->len != b->len )
return a->len>b->len ? 1 : -1;
else {
for ( i = 0, len = a->len; i < len; i++ )
if ( t = compr(vl,(Obj)BDY(a)[i],(Obj)BDY(b)[i]) )
return t;
return 0;
}
}