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interfac.ads: Change declarations of IEEE float types so that we no longer need a separate... 

2005-11-14  Robert Dewar  <dewar@adacore.com>

	* interfac.ads: Change declarations of IEEE float types so that we no
	longer need a separate version of this package for VMS.

From-SVN: r106987
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Robert Dewar 2005-11-15 15:00:09 +01:00 committed by Arnaud Charlet
parent ec21079988
commit 70b352b52f
1 changed files with 15 additions and 11 deletions
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@ -35,11 +35,6 @@
-- --
------------------------------------------------------------------------------
-- Assumes integer sizes of 8, 16, 32 and 64 are available, and that the
-- floating-point formats are IEEE compatible.
-- Note: There is a specialized version of this package for OpenVMS
package Interfaces is
pragma Pure;
@ -153,17 +148,26 @@ package Interfaces is
pragma Import (Intrinsic, Rotate_Left);
pragma Import (Intrinsic, Rotate_Right);
-- Floating point types. We assume that we are on an IEEE machine, and
-- that the types Short_Float and Long_Float in Standard refer to the
-- 32-bit short and 64-bit long IEEE forms. Furthermore, if there is
-- an extended float, we assume that it is available as Long_Long_Float.
-- IEEE Floating point types. Note that the form of these definitions
-- ensures that the work on VMS, even if the standard library is compiled
-- using a Float_Representation pragma for Vax_Float.
pragma Warnings (Off);
-- Turn off warnings for targets not providing IEEE floating-point types
type IEEE_Float_32 is digits 6;
pragma Float_Representation (IEEE_Float, IEEE_Float_32);
type IEEE_Float_64 is digits 15;
pragma Float_Representation (IEEE_Float, IEEE_Float_64);
-- If there is an IEEE extended float available on the machine, we assume
-- that it is available as Long_Long_Float.
-- Note: it is harmless, and explicitly permitted, to include additional
-- types in interfaces, so it is not wrong to have IEEE_Extended_Float
-- defined even if the extended format is not available.
type IEEE_Float_32 is new Short_Float;
type IEEE_Float_64 is new Long_Float;
type IEEE_Extended_Float is new Long_Long_Float;
end Interfaces;