mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*=============================================================================
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This file is part of ARB.
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ARB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2015 Arb authors
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******************************************************************************/
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#include "arb_mat.h"
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void
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arb_mat_trace(arb_t trace, const arb_mat_t mat, slong prec)
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{
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slong i;
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if (!arb_mat_is_square(mat))
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{
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flint_printf("arb_mat_trace: a square matrix is required!\n");
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abort();
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}
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if (arb_mat_is_empty(mat))
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{
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arb_zero(trace);
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return;
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}
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arb_set(trace, arb_mat_entry(mat, 0, 0));
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for (i = 1; i < arb_mat_nrows(mat); i++)
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{
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arb_add(trace, trace, arb_mat_entry(mat, i, i), prec);
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}
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}
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