arb/fmpcb_mat/inv.c

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/*=============================================================================
This file is part of ARB.
ARB is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
ARB 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ARB; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2012 Fredrik Johansson
******************************************************************************/
#include "fmpcb_mat.h"
int
fmpcb_mat_inv(fmpcb_mat_t X, const fmpcb_mat_t A, long prec)
{
if (X == A)
{
int r;
fmpcb_mat_t T;
fmpcb_mat_init(T, fmpcb_mat_nrows(A), fmpcb_mat_ncols(A));
r = fmpcb_mat_inv(T, A, prec);
fmpcb_mat_swap(T, X);
fmpcb_mat_clear(T);
return r;
}
fmpcb_mat_one(X);
return fmpcb_mat_solve(X, A, X, prec);
}