Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/s-imgrea.ads @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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1 ------------------------------------------------------------------------------ | |
2 -- -- | |
3 -- GNAT RUN-TIME COMPONENTS -- | |
4 -- -- | |
5 -- S Y S T E M . I M G _ R E A L -- | |
6 -- -- | |
7 -- S p e c -- | |
8 -- -- | |
9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- | |
10 -- -- | |
11 -- GNAT is free software; you can redistribute it and/or modify it under -- | |
12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
17 -- -- | |
18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
20 -- version 3.1, as published by the Free Software Foundation. -- | |
21 -- -- | |
22 -- You should have received a copy of the GNU General Public License and -- | |
23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
25 -- <http://www.gnu.org/licenses/>. -- | |
26 -- -- | |
27 -- GNAT was originally developed by the GNAT team at New York University. -- | |
28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
29 -- -- | |
30 ------------------------------------------------------------------------------ | |
31 | |
32 -- Image for fixed and float types (also used for Float_IO/Fixed_IO output) | |
33 | |
34 package System.Img_Real is | |
35 pragma Pure; | |
36 | |
37 procedure Image_Ordinary_Fixed_Point | |
38 (V : Long_Long_Float; | |
39 S : in out String; | |
40 P : out Natural; | |
41 Aft : Natural); | |
42 -- Computes fixed_type'Image (V) and returns the result in S (1 .. P) | |
43 -- updating P on return. The result is computed according to the rules for | |
44 -- image for fixed-point types (RM 3.5(34)), where Aft is the value of the | |
45 -- Aft attribute for the fixed-point type. This function is used only for | |
46 -- ordinary fixed point (see package System.Img_Dec for handling of decimal | |
47 -- fixed-point). The caller guarantees that S is long enough to hold the | |
48 -- result and has a lower bound of 1. | |
49 | |
50 procedure Image_Floating_Point | |
51 (V : Long_Long_Float; | |
52 S : in out String; | |
53 P : out Natural; | |
54 Digs : Natural); | |
55 -- Computes fixed_type'Image (V) and returns the result in S (1 .. P) | |
56 -- updating P on return. The result is computed according to the rules for | |
57 -- image for floating-point types (RM 3.5(33)), where Digs is the value of | |
58 -- the Digits attribute for the floating-point type. The caller guarantees | |
59 -- that S is long enough to hold the result and has a lower bound of 1. | |
60 | |
61 procedure Set_Image_Real | |
62 (V : Long_Long_Float; | |
63 S : out String; | |
64 P : in out Natural; | |
65 Fore : Natural; | |
66 Aft : Natural; | |
67 Exp : Natural); | |
68 -- Sets the image of V starting at S (P + 1), updating P to point to the | |
69 -- last character stored, the caller promises that the buffer is large | |
70 -- enough and no check is made for this. Constraint_Error will not | |
71 -- necessarily be raised if this is violated, since it is perfectly valid | |
72 -- to compile this unit with checks off). The Fore, Aft and Exp values | |
73 -- can be set to any valid values for the case of use from Text_IO. Note | |
74 -- that no space is stored at the start for non-negative values. | |
75 | |
76 end System.Img_Real; |