1 files changed, 12 insertions, 1 deletions
diff --git a/matheunit.pas b/matheunit.pas
index d186e27..20f6e6b 100644
--- a/matheunit.pas
+++ b/matheunit.pas
@@ -19,7 +19,8 @@ type
     kvs: array of tKnownValue;
     function finde(nam: string): longint; inline;
   public
-    constructor create;
+    constructor create; overload;
+    constructor create(original: tKnownValues); overload;
     destructor destroy; override;
     procedure add(val: tKnownValue); inline; overload;
     procedure add(nam: string; val: extended); overload;
@@ -64,6 +65,16 @@ begin
   add('π',pi);
 end;
 
+constructor tKnownValues.create(original: tKnownValues);
+var
+  i: longint;
+begin
+  inherited create;
+  fillchar(kvs,sizeOf(kvs),#0);
+  for i:=0 to length(original.kvs)-1 do
+    add(original.kvs[i]);
+end;
+
 destructor tKnownValues.destroy;
 begin
   setLength(kvs,0);