|  |  5.1.45 Float 
See
 cring;
 ring.Syntax:Float ()
 Float (int_expression)
 Float (int_expression,int_expression)Type:cring
Purpose:returns a coefficient ring of floating point (inexect) real number
to be used in ring definitions.
Example:|  |   ring R1=Float(),(x,y),dp;
  R1;
==> // coefficients: Float()
==> // number of vars : 2
==> //        block   1 : ordering dp
==> //                  : names    x y
==> //        block   2 : ordering C
  ring R2=Float(10,20),(a,b),dp;
  R2;
==> // coefficients: Float(10,20)
==> // number of vars : 2
==> //        block   1 : ordering dp
==> //                  : names    a b
==> //        block   2 : ordering C
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