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File: [local] / OpenXM_contrib / PHC / Ada / Math_Lib / Numbers / abstract_ring.ads (download)
Revision 1.1.1.1 (vendor branch), Sun Oct 29 17:45:24 2000 UTC (23 years, 9 months ago) by maekawa
Import the second public release of PHCpack. OKed by Jan Verschelde. |
generic type number is private; zero,one : number; -- neutral element for + and * are zero and one with function Create ( n : natural ) return number; -- n is number with function Equal ( a,b : number ) return boolean; -- a = b with procedure Copy ( a : in number; b : in out number ); -- b := a with function "+" ( a,b : number ) return number; -- return a+b; with function "+" ( a : number ) return number; -- return +a; with function "-" ( a,b : number ) return number; -- return a-b; with function "-" ( a : number ) return number; -- return -a; with function "*" ( a,b : number ) return number; -- return a*b; with procedure Add ( a : in out number; b : in number ); -- a := a+b; with procedure Sub ( a : in out number; b : in number ); -- a := a-b; with procedure Min ( a : in out number ); -- a := -a; with procedure Mul ( a : in out number; b : in number ); -- a := a*b; with procedure Clear ( a : in out number ); -- deallocation package Abstract_Ring is end; -- DESCRIPTION : -- Abstract specification of any ring of numbers that has the standard -- natural numbers as subring.