[ET Trac] #1072: User guide does not explain how to use boolean parameters from Fortran.

[Roland Haas]

#1072: User guide does not explain how to use boolean parameters from Fortran.

 Reporter: Ian Hinder
   Status: new
Milestone: 
  Version: 
     Type: bug
 Priority: minor
Component: Cactus

Comment (by Roland Haas):

There is an explanation present since at least git hash [3c44bc84](https://bitbucket.org/cactuscode/cactus/commits/3c44bc840a8f4ecb7b313a4e1e29051b9f19481f) "Fixed numerous spelling errors, some grammatical boo-boos, formatting flaws \(inlcuding gratuitous hyphenation and un-dotted 'e.g.' and 'i.e'\)" of [cactus](https://bitbucket.org/cactuscode/cactus) which is from Mon Jan 5 16:28:24 2004. This is in [doc/UsersGuide/ThornWriters.tex](https://www.einsteintoolkit.org/usersguide/UsersGuide.html#x1-87000C1.6.2) and currently reads:

> All parameters defined in a thorn’s param.ccl and all global parameters, appear as local variables of the corresponding CCTK data type in Fortran source code, i.e. **Booleans and Integers appear as CCTK\_INT types** \(with nonzero/zero values for boolean yes/no\), Reals as CCTK\_REAL, and Keywords and String parameters as CCTK\_STRING \(see also note below\).

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/1072/user-guide-does-not-explain-how-to-use
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