libMesh: slepc_macro.h Source File

 // The libMesh Finite Element Library.
 // Copyright (C) 2002-2018 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 // License as published by the Free Software Foundation; either
 // version 2.1 of the License, or (at your option) any later version.
 
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 // Lesser General Public License for more details.
 
 // You should have received a copy of the GNU Lesser General Public
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
 #ifndef LIBMESH_SLEPC_MACRO_H
 #define LIBMESH_SLEPC_MACRO_H
 
 // Local includes
 #include "libmesh/libmesh_config.h"
 
 // SLEPc include files. SLEPc can only be used
 // together with PETSc.
 #ifdef LIBMESH_HAVE_SLEPC
 
 // A convenient macro for comparing SLEPc versions.
 // Returns 1 if the current SLEPc version is < major.minor.subminor
 // and zero otherwise.
 #define SLEPC_VERSION_LESS_THAN(major,minor,subminor)                   \
   ((LIBMESH_DETECTED_SLEPC_VERSION_MAJOR < (major) ||                   \
     (LIBMESH_DETECTED_SLEPC_VERSION_MAJOR == (major) && (LIBMESH_DETECTED_SLEPC_VERSION_MINOR < (minor) || \
                                                          (LIBMESH_DETECTED_SLEPC_VERSION_MINOR == (minor) && \
                                                           LIBMESH_DETECTED_SLEPC_VERSION_SUBMINOR < (subminor))))) ? 1 : 0)
 
 // Make up for missing extern "C" in old SLEPc versions
 #if !defined(LIBMESH_USE_COMPLEX_NUMBERS) && SLEPC_VERSION_LESS_THAN(3,0,0)
 #  define EXTERN_C_FOR_SLEPC_BEGIN extern "C" {
 #  define EXTERN_C_FOR_SLEPC_END }
 #else
 #  define EXTERN_C_FOR_SLEPC_BEGIN
 #  define EXTERN_C_FOR_SLEPC_END
 #endif
 
 #if SLEPC_VERSION_RELEASE && SLEPC_VERSION_LESS_THAN(3,1,1)
 #  define LibMeshEPSDestroy(x)         EPSDestroy(*(x))
 #else
 #  define LibMeshEPSDestroy(x)         EPSDestroy(x)
 #endif
 
 #endif // #if LIBMESH_HAVE_SLEPC
 #endif // LIBMESH_SLEPC_MACRO_H