MODULE types_mod
Overview
Provides some commonly used mathematical constants, and a set of Fortran integer and real kinds, to be used to select the right variable size (e.g. 4 bytes, 8 bytes) to match the rest of the DART interfaces. (DART does not depend on compiler flags to set precision, but explicitly specifies a kind for each variable in the public interfaces.)
Other modules used
none
Public interfaces
use types_mod, only : |
i4 |
i8 |
|
r4 |
|
r8 |
|
c4 |
|
c8 |
|
digits12 |
|
PI |
|
DEG2RAD |
|
RAD2DEG |
|
SECPERDAY |
|
MISSING_R4 |
|
MISSING_R8 |
|
MISSING_I |
|
MISSING_DATA |
|
metadatalength |
|
obstypelength |
|
t_kelvin |
|
es_alpha |
|
es_beta |
|
es_gamma |
|
gas_constant_v |
|
gas_constant |
|
L_over_Rv |
|
ps0 |
|
earth_radius |
|
gravity |
integer, parameter :: i4
integer, parameter :: i8
integer, parameter :: r4
integer, parameter :: r8
integer, parameter :: c4
integer, parameter :: c8
integer, parameter :: digits12
These kinds are used when declaring variables, like:
real(r8) :: myvariable
integer(i4) :: shortint
real(KIND=R8), parameter :: PI
real(KIND=R8), parameter :: DEG2RAD
real(KIND=R8), parameter :: RAD2DEG
real(KIND=R8), parameter :: SECPERDAY
Some commonly used math constants, defined here for convenience.
real(KIND=R4), parameter :: MISSING_R4
real(KIND=R8), parameter :: MISSING_R8
integer, parameter :: MISSING_I
integer, parameter :: MISSING_DATA
Numeric constants used in the DART code when a numeric value is required, but the data is invalid or missing. These are typically defined as negative and a series of 8’s, so they are distinctive when scanning a list of values.
integer, parameter :: metadatalength
integer, parameter :: obstypelength
Some common string limits used system-wide by DART code. The obstypelength is limited by the Fortran-imposed maximum number of characters in a parameter; the metadatalength was selected to be long enough to allow descriptive names but short enough to keep printing to less than a single line.
real(KIND=R8), parameter :: t_kevin
real(KIND=R8), parameter :: es_alpha
real(KIND=R8), parameter :: es_beta
real(KIND=R8), parameter :: es_gamma
real(KIND=R8), parameter :: gas_constant_v
real(KIND=R8), parameter :: gas_constant
real(KIND=R8), parameter :: L_over_Rv
real(KIND=R8), parameter :: ps0
real(KIND=R8), parameter :: earth_radius
real(KIND=R8), parameter :: gravity
Namelist
There is no namelist for this module.
Files
None.
References
none
Private components
N/A