blob: 400d6635e36282155b9b251cb2edeb64383de339 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
(* ShortStr.mod provides low level SHORTREAL/string conversions.
Copyright (C) 2023-2025 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE ShortConv;
IMPORT
ConvTypes;
TYPE
ConvResults = ConvTypes.ConvResults; (* strAllRight, strOutOfRange,
strWrongFormat, strEmpty *)
PROCEDURE ScanReal (inputCh: CHAR; VAR chClass: ConvTypes.ScanClass;
VAR nextState: ConvTypes.ScanState);
(* Represents the start state of a finite state scanner for real
numbers - assigns class of inputCh to chClass and a procedure
representing the next state to nextState.
*)
PROCEDURE FormatReal (str: ARRAY OF CHAR): ConvResults;
(* Returns the format of the string value for conversion to LONGREAL. *)
PROCEDURE ValueReal (str: ARRAY OF CHAR): SHORTREAL;
(* Returns the value corresponding to the real number string value
str if str is well-formed; otherwise raises the ShortConv exception.
*)
PROCEDURE LengthFloatReal (real: SHORTREAL; sigFigs: CARDINAL): CARDINAL;
(* Returns the number of characters in the floating-point string
representation of real with sigFigs significant figures.
*)
PROCEDURE LengthEngReal (real: SHORTREAL; sigFigs: CARDINAL): CARDINAL;
(* Returns the number of characters in the floating-point engineering
string representation of real with sigFigs significant figures.
*)
PROCEDURE LengthFixedReal (real: SHORTREAL; place: INTEGER): CARDINAL;
(* Returns the number of characters in the fixed-point string
representation of real rounded to the given place relative to the
decimal point.
*)
PROCEDURE IsRConvException (): BOOLEAN;
(* Returns TRUE if the current coroutine is in the exceptional
execution state because of the raising of an exception in a
routine from this module; otherwise returns FALSE.
*)
END ShortConv.
|
