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