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Diffstat (limited to 'gcc/ada/s-imgdec.ads')
| -rw-r--r-- | gcc/ada/s-imgdec.ads | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/gcc/ada/s-imgdec.ads b/gcc/ada/s-imgdec.ads new file mode 100644 index 00000000000..19cc702ed2e --- /dev/null +++ b/gcc/ada/s-imgdec.ads @@ -0,0 +1,83 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUNTIME COMPONENTS -- +-- -- +-- S Y S T E M . I M G _ D E C -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.6 $ +-- -- +-- Copyright (C) 1992-2000 Free Software Foundation, Inc. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 2, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- Image for decimal fixed types where the size of the corresponding integer +-- type does not exceed Integer'Size (also used for Text_IO.Decimal_IO output) + +package System.Img_Dec is +pragma Preelaborate (Img_Dec); + + function Image_Decimal + (V : Integer; + Scale : Integer) + return String; + -- Compute 'Image of V, the integer value (in units of delta) of a decimal + -- type whose Scale is as given and return the result. THe image is given + -- by the rules in RM 3.5(34) for fixed-point type image functions. + + procedure Set_Image_Decimal + (V : Integer; + S : out String; + P : in out Natural; + Scale : Integer; + Fore : Natural; + Aft : Natural; + Exp : Natural); + -- Sets the image of V, where V is the integer value (in units of delta) + -- of a decimal type with the given Scale, starting at S (P + 1), updating + -- P to point to the last character stored, the caller promises that the + -- buffer is large enough and no check is made for this. Constraint_Error + -- will not necessarily be raised if this requirement is violated, since + -- it is perfectly valid to compile this unit with checks off. The Fore, + -- Aft and Exp values can be set to any valid values for the case of use + -- by Text_IO.Decimal_IO. + + procedure Set_Decimal_Digits + (Digs : in out String; + NDigs : Natural; + S : out String; + P : in out Natural; + Scale : Integer; + Fore : Natural; + Aft : Natural; + Exp : Natural); + -- This procedure has the same semantics as Set_Image_Decimal, except that + -- the value in Digs (1 .. NDigs) is given as a string of decimal digits + -- preceded by either a minus sign or a space (i.e. the integer image of + -- the value in units of delta). The call may destroy the value in Digs, + -- which is why Digs is in-out (this happens if rounding is required). + -- Set_Decimal_Digits is shared by all the decimal image routines. + +end System.Img_Dec; |