source: palm/trunk/SOURCE/mod_kinds.f90

Last change on this file was 4828, checked in by Giersch, 4 months ago

Copyright updated to year 2021, interface pmc_sort removed to accelarate the nesting code

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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 terms of the GNU General
6! Public License as published by the Free Software Foundation, either version 3 of the License, or
7! (at your option) any later version.
8!
9! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
10! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
11! Public License for more details.
12!
13! You should have received a copy of the GNU General Public License along with PALM. If not, see
14! <http://www.gnu.org/licenses/>.
15!
16! Copyright 1997-2021 Leibniz Universitaet Hannover
17!--------------------------------------------------------------------------------------------------!
18!
19! Current revisions:
20! ------------------
21!
22!
23! Former revisions:
24! -----------------
25! $Id: mod_kinds.f90 4828 2021-01-05 11:21:41Z banzhafs $
26! file re-formatted to follow the PALM coding standard
27!
28! 4360 2020-01-07 11:25:50Z suehring
29! Corrected "Former revisions" section
30!
31! 4000 2019-05-24 07:20:44Z raasch
32! preprocessor switch added for choosing the real precision
33!
34! 3655 2019-01-07 16:51:22Z knoop
35! Corrected "Former revisions" section
36!
37! 1306 2014-03-13 14:30:59Z raasch
38! Initial revision
39!
40! Description:
41! ------------
42!> Standard kind definitions
43!> wp (working precision) and iwp (integer working precision) are the kinds used by default in all
44!> variable declarations.
45!> By default, PALM is using wp = dp (64bit), and iwp = isp (32bit).
46!> If you like to switch to other precision, then please set wp/iwp appropriately by assigning other
47!> kinds below.
48!--------------------------------------------------------------------------------------------------!
49 MODULE kinds
50
51
52    IMPLICIT NONE
53
54!
55!-- Floating point kinds
56    INTEGER, PARAMETER ::  sp = 4           !< single precision (32 bit)
57    INTEGER, PARAMETER ::  dp = 8           !< double precision (64 bit)
58
59!
60!-- Integer kinds
61    INTEGER, PARAMETER ::  isp = SELECTED_INT_KIND(  9 )   !< single precision (32 bit)
62    INTEGER, PARAMETER ::  idp = SELECTED_INT_KIND( 14 )   !< double precision (64 bit)
63
64!
65!-- Set kinds to be used as defaults
66#if defined( __single_precision )
67    INTEGER, PARAMETER ::   wp =  sp          !< default real kind
68#else
69    INTEGER, PARAMETER ::   wp =  dp          !< default real kind
70#endif
71    INTEGER, PARAMETER ::  iwp = isp          !< default integer kind
72
73    SAVE
74
75 END MODULE kinds
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