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-- This source is licensed under Creative Commons CC0 v1.0.
--
-- To read the full text, see license.txt in the main directory of this repository
-- or go to https://creativecommons.org/publicdomain/zero/1.0/legalcode.txt
--
-- For a human readable summary, go to https://creativecommons.org/publicdomain/zero/1.0/
private with
Ada.Finalization,
Interfaces.C;
package Rationals is
type Fraction is private;
function "+"
(Left, Right : in Fraction)
return Fraction;
function "+"
(Left : in Fraction;
Right : in Integer)
return Fraction;
function "+"
(Left : in Integer;
Right : in Fraction)
return Fraction;
function "-"
(Left, Right : in Fraction)
return Fraction;
function "-"
(Left : in Fraction;
Right : in Integer)
return Fraction;
function "-"
(Left : in Integer;
Right : in Fraction)
return Fraction;
function "-"
(Right : in Fraction)
return Fraction;
function "*"
(Left, Right : in Fraction)
return Fraction;
function "*"
(Left : in Fraction;
Right : in Integer)
return Fraction;
function "*"
(Left : in Integer;
Right : in Fraction)
return Fraction;
function "/"
(Left, Right : in Fraction)
return Fraction;
function "/"
(Left : in Fraction;
Right : in Integer)
return Fraction;
function "/"
(Left : in Integer;
Right : in Fraction)
return Fraction;
function "/"
(Left, Right : in Integer)
return Fraction;
function "="
(Left, Right : in Fraction)
return Boolean;
function "="
(Left : in Fraction;
Right : in Integer)
return Boolean;
function "="
(Left : in Integer;
Right : in Fraction)
return Boolean;
function "<="
(Left, Right : in Fraction)
return Boolean;
function "<="
(Left : in Fraction;
Right : in Integer)
return Boolean;
function "<="
(Left : in Integer;
Right : in Fraction)
return Boolean;
function "<"
(Left, Right : in Fraction)
return Boolean;
function "<"
(Left : in Fraction;
Right : in Integer)
return Boolean;
function "<"
(Left : in Integer;
Right : in Fraction)
return Boolean;
function ">="
(Left, Right : in Fraction)
return Boolean;
function ">="
(Left : in Fraction;
Right : in Integer)
return Boolean;
function ">="
(Left : in Integer;
Right : in Fraction)
return Boolean;
function ">"
(Left, Right : in Fraction)
return Boolean;
function ">"
(Left : in Fraction;
Right : in Integer)
return Boolean;
function ">"
(Left : in Integer;
Right : in Fraction)
return Boolean;
function Numerator
(Item : in Fraction)
return Long_Integer;
function Denominator
(Item : in Fraction)
return Long_Integer;
function Floor
(Item : in Fraction)
return Long_Integer;
function Ceiling
(Item : in Fraction)
return Long_Integer;
function Round
(Item : in Fraction)
return Long_Integer;
private
-- Types necessary to bind to GMP
type mp_limb_t is new Interfaces.C.unsigned;
type mp_ptr is access mp_limb_t;
type mpz_t is record
mp_alloc, mp_size : Interfaces.C.int;
mp_d : mp_ptr;
end record;
type mpq_t is record
mp_num, mp_den : mpz_t;
end record;
-- The actual type exported by this package, which
-- has to be Controlled so it gets deallocated properly
type Fraction is new Ada.Finalization.Controlled with record
Data : mpq_t;
end record;
overriding procedure Initialize
(This : in out Fraction);
overriding procedure Adjust
(This : in out Fraction);
overriding procedure Finalize
(This : in out Fraction);
-- Internal type for temporary data to make some Fraction
-- functions easier to show as correct
type Bignum is new Ada.Finalization.Controlled with record
Data : mpz_t;
end record;
overriding procedure Initialize
(This : in out Bignum);
overriding procedure Adjust
(This : in out Bignum);
overriding procedure Finalize
(This : in out Bignum);
pragma Linker_Options ("-lgmp");
end Rationals;
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