Dear all,
I would like to write a function that will return a string, but I do not want the string contains trailing spaces. How could I do it? Thanks!
How to return a string without trailing spaces
mar, 11/09/2012 - 22:59
How to return a string without trailing spaces
Reportez-vous à notre Notice d'optimisation pour plus d'informations sur les choix et l'optimisation des performances dans les produits logiciels Intel.
- Identifiez-vous pour poster des commentaires
mer, 12/09/2012 - 06:07
You could write a specification function that computes the length of the function result. Sometimes this isn't feasible, though, for example when the function returns the next line of input. In this case the function result may be declared as allocatable length. In either case the interface must be explicit in the calling program unit.
- Identifiez-vous pour poster des commentaires
mer, 12/09/2012 - 15:43
You can also do it with a function that returns a deferred-length allocatable character result.
- Identifiez-vous pour poster des commentaires
jeu, 13/09/2012 - 07:45
Quote:
You can also do it with a function that returns a deferred-length allocatable character result.
Can you give me an example solution of this:
character(1000) function foo()
foo = "abc"
end function foo
where I would like foo() to return "abc", not "abc" with huge number of spaces.
- Identifiez-vous pour poster des commentaires
jeu, 13/09/2012 - 18:08
function foo()
character(:), allocatable :: foo
foo = "abc"
end function foo
You must have an explicit interface for this visible to the caller - the easiest way to do that is to put the function in a module and then USE the module in the program units where you want to call the function.
Please note also that you need a reasonably current compiler (12.1 minimum, I think), for this to work.
- Identifiez-vous pour poster des commentaires
ven, 14/09/2012 - 01:45
Thank you, Steve!
- Identifiez-vous pour poster des commentaires
ven, 14/09/2012 - 06:44
I am still having a problem as:
function foo()
character(:), allocatable :: foo
character(1000) bar
bar = "abc"
foo = trim(bar)
end function foo
The content of foo still includes trailing spaces.
- Identifiez-vous pour poster des commentaires
sam, 15/09/2012 - 17:30
I tried it and it worked correctly for me. Here's the test program I used and its output:
print '(A,A,A)', '*',foo(),'*'
contains
function foo()
character(:), allocatable :: foo
character(10) bar
bar = "abc"
foo = trim(bar)
end function foo
end
*abc*
- Identifiez-vous pour poster des commentaires
sam, 15/09/2012 - 22:10
Thanks, again! "ifort" can behave properly, but "gfortran" still add the trailing spaces!