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New Features and Important Changes in GammaLib 1.2.0
5 August 2016
1. Introduction
---------------
This document briefly summarizes module by module the most important changes
made since the last release of GammaLib.
2. Public interface modifications
---------------------------------
The following classes have been added:
- GModelSpectralExpInvPlaw
- GModelSpectralPlawEnergyFlux
The following classes have been removed:
- ...
The following classes have been renamed:
- GModelSpectralPlawPhotonFlux, was GModelSpectralPlaw2
The following methods have been added:
- GApplication::log_string()
- GApplication::log_value()
- GApplication::log_header1()
- GApplication::log_header2()
- GApplication::log_header3()
- GLog::is_open()
- GLog::is_empty()
The following methods have been removed:
- ...
The following methods have been renamed:
- GModelSpectralPlawPhotonFlux::flux(), was GModelSpectralPlaw2::integral()
The parameters for the following methods have been changed:
- GApplication::log_parameters() now has a mandatory GChatter argument
The return value of the following methods has been changed:
- GSkyMap::write() now returns a pointer to GFitsHDU instead of void
3. Configuration
-----------------
The Python wrappers were always removed when typing "make clean", even if
they had been shipped with the code. Now, the Python wrappers are only
removed in a "make clean" if they have been built (#1826).
4. Application module
---------------------
The GApplication::log_parameters() method now takes a mandatory GChatter
argument to enable displaying of parameters only above a given chattiness
level. This avoids a log-level check in the client code. For the same
purpose, the GApplication methods log_string(), log_value(), log_header1(),
log_header2(), and log_header3() have been introduced. There are three
variants of log_value() for strings, integers and double precision values
(#1828).
The application name and version and now conserved in a GApplication::clear()
method call and the application is properly initialised like in the call of
a constructor (#1835).
The GLog::copy_members() method simply copied the file pointer, hence after
a copy of a log instance there were two instances holding the same pointer
to the file, and as soon as one instance closes the log file the file
pointer in the second instance became invalid. This has been fixed by
duplicating the file descriptor and opening the log file in the copied
instance using the duplicated descriptor. This solves the problems (#1823).
A GLog::is_open() method has been added to assess whether a log file is
actually opened. The GLog::is_empty() method has been added to assess whether
a log file is actually empty (#1837).
The GLog::size() method now returns the actual size of the log file, including
the number of characters on disk.
5. Base module
--------------
None
6. FITS I/O Interface
---------------------
None
7. Linear algebra module
------------------------
None
8. Model module
---------------
The GModelSpectralPlaw2 class has been renamed to GModelSpectralPlawPhotonFlux
and the integral() methods were renamed to flux(). A new class
GModelSpectralPlawEnergyFlux has been added that handles integral energy
fluxes as opposed to GModelSpectralPlawPhotonFlux that handles integral
photon fluxes. Unit tests have been added for the new class (#1790).
The GModelSpectralExpInvPlaw class has been added that uses a cut-off
parameter instead of a cut-off energy for the exponentially cut-off
power law. The cut-off parameter is the inverse of the cut-off energy
(#1800).
9. Numerics module
------------------
None
10. Observation module
----------------------
None
11. Optimization module
-----------------------
None
12. Sky module
--------------
The GSkyMap::write() method now returns a pointer to the written GFitsHDU
object. In case that no sky map is written, for example because none has been
defined so far, the method returns NONE. The GSkyMap::publish() method will
detect the NONE value and will do nothing if no sky map exists (#1835).
13. Support module
------------------
None
14. XML module
--------------
None
15. VO module
-------------
None
16. Xspec module
----------------
None
17. Test module
---------------
None
18. Multi-wavelength interface
------------------------------
None
19. Fermi-LAT interface
----------------------
None
20. CTA interface
-----------------
None
21. COMPTEL interface
---------------------
None