source: palm/trunk/SOURCE/mod_kinds.f90 @ 4180

Last change on this file since 4180 was 4180, checked in by scharf, 2 years ago

removed comments in 'Former revisions' section that are older than 01.01.2019

  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1!> @file mod_kinds.f90
2!------------------------------------------------------------------------------!
3! This file is part of the PALM model system.
4!
5! PALM is free software: you can redistribute it and/or modify it under the
6! terms of the GNU General Public License as published by the Free Software
7! Foundation, either version 3 of the License, or (at your option) any later
8! version.
9!
10! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
13!
14! You should have received a copy of the GNU General Public License along with
15! PALM. If not, see <http://www.gnu.org/licenses/>.
16!
17! Copyright 1997-2019 Leibniz Universitaet Hannover
18!------------------------------------------------------------------------------!
19!
20! Current revisions:
21! ------------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: mod_kinds.f90 4180 2019-08-21 14:37:54Z scharf $
27! preprocessor switch added for choosing the real precision
28!
29! 3655 2019-01-07 16:51:22Z knoop
30! Corrected "Former revisions" section
31!
32!
33! Description:
34! ------------
35!> Standard kind definitions
36!> wp (working precision) and iwp (integer working precision) are the kinds
37!> used by default in all variable declarations.
38!> By default, PALM is using wp = dp (64bit), and iwp = isp (32bit).
39!> If you like to switch to other precision, then please set wp/iwp
40!> appropriately by assigning other kinds below.
41!------------------------------------------------------------------------------!
42 MODULE kinds
43 
44
45    IMPLICIT NONE
46
47!
48!-- Floating point kinds
49    INTEGER, PARAMETER ::  sp = 4           !< single precision (32 bit)
50    INTEGER, PARAMETER ::  dp = 8           !< double precision (64 bit)
51
52!
53!-- Integer kinds
54    INTEGER, PARAMETER ::  isp = SELECTED_INT_KIND(  9 )   !< single precision (32 bit)
55    INTEGER, PARAMETER ::  idp = SELECTED_INT_KIND( 14 )   !< double precision (64 bit)
56
57!
58!-- Set kinds to be used as defaults
59#if defined( __single_precision )
60    INTEGER, PARAMETER ::   wp =  sp          !< default real kind
61#else
62    INTEGER, PARAMETER ::   wp =  dp          !< default real kind
63#endif
64    INTEGER, PARAMETER ::  iwp = isp          !< default integer kind
65
66    SAVE
67
68 END MODULE kinds
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