===================================================================
RCS file: /home/cvs/OpenXM/src/k097/help.k,v
retrieving revision 1.1.1.1
retrieving revision 1.6
diff -u -p -r1.1.1.1 -r1.6
--- OpenXM/src/k097/help.k	1999/10/08 02:12:15	1.1.1.1
+++ OpenXM/src/k097/help.k	2000/12/29 07:19:39	1.6
@@ -1,4 +1,4 @@
-
+/* $OpenXM: OpenXM/src/k097/help.k,v 1.5 2000/12/28 00:08:13 takayama Exp $ */
 if (K00_verbose)
   Println("help.k (help.ccc).  8/6, 1996 --- 8/7, 1996. 3/6, 1997 --- 12/21, 1997.");
 
@@ -270,7 +270,11 @@ HelpAdd(["IsString",
 ["IsString(obj) returns true if << obj >> is a string (object obj).",
  "Example:  if (IsString(\"abc\")) Println(\"Hello\"); ;"]]);
 
+HelpAdd(["IsRing",
+["IsRing(obj) returns true if << obj >> is a ring (object obj)."
+]]);
 
+
 HelpAdd(["IsSm1Integer",
 ["IsSm1Integer(obj) returns true if << obj >> is an integer of sm1(object obj)."]]);
 
@@ -331,6 +335,7 @@ def RingPoly(vList,weightMatrix,pp) {
     sm1("[", vList, 
         "ring_of_polynomials ( ) elimination_order 0 ] define_ring
          /tmp set ");
+    SetRingVariables();
     return(tmp);
   } else ;
   if (argsize == 2) {
@@ -351,6 +356,7 @@ def RingPoly(vList,weightMatrix,pp) {
     }
     new0[i] = newtmp;
   }
+  SetRingVariables();
   ringpp =
   sm1("[", vList, 
       "ring_of_polynomials ", new0, " weight_vector", pp, " ] define_ring");
@@ -366,7 +372,11 @@ def IsSm1Integer(ob) {
   sm1(ob , " isInteger /FunctionValue set ");
 }
 
+def IsRing(ob) {
+  sm1(ob , " isRing /FunctionValue set ");
+}
 
+
 def CancelNumber(rn) {
   local tmp;
   sm1(" [(cancel) ",rn," ] mpzext /tmp set ");
@@ -374,7 +384,13 @@ def CancelNumber(rn) {
   sm1(" tmp (denominator) dc (1).. eq { /FunctionValue tmp (numerator) dc def} { /FunctionValue tmp def } ifelse ");
 }
 
+def DC_polynomial(obj) {
+  return(DC(obj,"polynomial"));
+}
 def DC(obj,key) {
+  if (IsArray(obj) && key=="polynomial") {
+    return(Map(obj,"DC_polynomial"));
+  }
   if (key == "string") { return(ToString(obj)); }
   else if (key == "integer") { key = "universalNumber"; }
   else if (key == "sm1integer") { key = "integer"; }
@@ -506,7 +522,6 @@ def RingDonIndexedVariables(vList, size, weightMatrix,
   if (argsize == 2) {
     vListD = AddString(["D",vList]);
     myring = RingD(IndexedVariables(vList,size));
-    SetRingVariables();
     tmp = NewArray(size);
     for (k00_i=0; k00_i<size; k00_i++) {tmp[k00_i]=Poly(Indexed(vList,k00_i));}
     sm1(vList, " (literal) dc ", tmp, " def ");
@@ -756,18 +771,21 @@ def Tag(f) {
   if (IsArray(f)) {
     return(Map(f,"Tag"));
   }else {
-    ans = sm1(f," tag (universalNumber) dc ");
+    ans = sm1(f," etag (universalNumber) dc ");
     return(ans);
   }
 }
 HelpAdd(["Tag",
 ["Tag(f) returns the datatype tags of f where",
  "5: string,  9: polynomial, 15: integer(big-num), 16: rational, ",
- "17: object, 18:double.",
+ "18:double, 257: Error ",
  "Ex. Tag([Poly(\"0\"), 0]):"
 ]]);
 
-
-
+def Error(s) {
+  sm1(" s error ");
+}
+HelpAdd(["Error",
+["Error(s) causes an error and outputs a message s."]]);
 
 OutputPrompt ;