/usr/include/ida/ida_spgmr.h is in libsundials-dev 2.7.0+dfsg-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* -----------------------------------------------------------------
* $Revision: 4378 $
* $Date: 2015-02-19 10:55:14 -0800 (Thu, 19 Feb 2015) $
* -----------------------------------------------------------------
* Programmers: Alan C. Hindmarsh and Radu Serban @ LLNL
* -----------------------------------------------------------------
* LLNS Copyright Start
* Copyright (c) 2014, Lawrence Livermore National Security
* This work was performed under the auspices of the U.S. Department
* of Energy by Lawrence Livermore National Laboratory in part under
* Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344.
* Produced at the Lawrence Livermore National Laboratory.
* All rights reserved.
* For details, see the LICENSE file.
* LLNS Copyright End
* -----------------------------------------------------------------
* This is the header file for the IDA Scaled Preconditioned GMRES
* linear solver module, IDASPGMR.
* -----------------------------------------------------------------
*/
#ifndef _IDASPGMR_H
#define _IDASPGMR_H
#include <ida/ida_spils.h>
#include <sundials/sundials_spgmr.h>
#ifdef __cplusplus /* wrapper to enable C++ usage */
extern "C" {
#endif
/*
* -----------------------------------------------------------------
*
* Function : IDASpgmr
* -----------------------------------------------------------------
* A call to the IDASpgmr function links the main integrator with
* the IDASPGMR linear solver module. Its parameters are as
* follows:
*
* IDA_mem is the pointer to memory block returned by IDACreate.
*
* maxl is the maximum Krylov subspace dimension, an
* optional input. Pass 0 to use the default value,
* MIN(Neq, 5). Otherwise pass a positive integer.
*
* The return values of IDASpgmr are:
* IDASPILS_SUCCESS if successful
* IDASPILS_MEM_NULL if the ida memory was NULL
* IDASPILS_MEM_FAIL if there was a memory allocation failure
* IDASPILS_ILL_INPUT if there was illegal input.
* The above constants are defined in ida_spils.h
*
* -----------------------------------------------------------------
*/
SUNDIALS_EXPORT int IDASpgmr(void *ida_mem, int maxl);
#ifdef __cplusplus
}
#endif
#endif
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