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promote real to double precisio with VISUALfortran

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Old   March 11, 2008, 12:36
Default promote real to double precisio with VISUALfortran
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Hallo I have a code for shallow water equations written in Fortran. there is the option "promote real to double precision" with visual fortran?Because my variables are declared as:


and I want just to compile sometimes in single and simetimes in double precision just changing the option without change the code thanks so much Alberto
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Old   March 12, 2008, 03:19
Default Re: promote real to double precisio with VISUALfor
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u can use this method !

parameter (n=4)

real(n) name1, .....

if you use modul for data base of variables it will be very easy. it needs to chaing only in main module of your data base

module var_database

parameter (n=4) 'or n=8'

real(n) name1, .....

real(n) name3, .....

end module ... . . .

subroutine sub1

use var_database

end sub1

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