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https://github.com/vale981/arb
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6bf072eb59
This will allow us to not loose the julia session on error. See also https://github.com/wbhart/flint2/pull/243
36 lines
870 B
C
36 lines
870 B
C
/*
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Copyright (C) 2015 Arb authors
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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 it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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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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flint_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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