div(p1, p2 = v2) public

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static VALUE
BigDecimal_div2(int argc, VALUE *argv, VALUE self)
{
    ENTER(5);
    VALUE b,n;
    int na = rb_scan_args(argc,argv,"11",&b,&n);
    if(na==1) { /* div in Float sense */
       VALUE obj;
       Real *div=NULL;
       Real *mod;
       obj = BigDecimal_DoDivmod(self,b,&div,&mod);
       if(obj!=(VALUE)0) return obj;
       if(VpIsNaN(div) && rb_equal(b, INT2FIX(0))) {
           rb_raise(rb_eZeroDivError, "divided by 0");
       }
       return BigDecimal_to_i(ToValue(div));
    } else {    /* div in BigDecimal sense */
       U_LONG ix = (U_LONG)GetPositiveInt(n);
       if(ix==0) return BigDecimal_div(self,b);
       else {
          Real *res=NULL;
          Real *av=NULL, *bv=NULL, *cv=NULL;
          U_LONG mx = (ix+VpBaseFig()*2);
          U_LONG pl = VpSetPrecLimit(0);

          GUARD_OBJ(cv,VpCreateRbObject(mx,"0"));
          GUARD_OBJ(av,GetVpValue(self,1));
          GUARD_OBJ(bv,GetVpValue(b,1));
          mx = av->Prec + bv->Prec + 2;
          if(mx <= cv->MaxPrec) mx = cv->MaxPrec+1;
          GUARD_OBJ(res,VpCreateRbObject((mx * 2  + 2)*VpBaseFig(), "#0"));
          VpDivd(cv,res,av,bv);
          VpSetPrecLimit(pl);
          VpLeftRound(cv,VpGetRoundMode(),ix);
          return ToValue(cv);
       }
    }
}
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