mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
62 lines
1.8 KiB
C
62 lines
1.8 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) 2012 Fredrik Johansson
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******************************************************************************/
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#include "acb.h"
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#ifndef __compar_fn_t
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typedef int (*__compar_fn_t) (__const void *, __const void *);
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#endif
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int acb_cmp_pretty(const acb_t a, const acb_t b)
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{
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arb_t t, u, v;
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int res;
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arb_init(t);
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arb_init(u);
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arb_init(v);
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arb_abs(u, acb_imagref(a));
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arb_abs(v, acb_imagref(b));
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arb_sub(t, u, v, MAG_BITS);
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res = 0;
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if (arb_contains_zero(t))
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{
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arb_sub(t, acb_realref(a), acb_realref(b), MAG_BITS);
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res = arb_is_positive(t) ? 1 : -1;
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}
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else
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{
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res = arb_is_positive(t) ? 1 : -1;
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}
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arb_clear(t);
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arb_clear(u);
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arb_clear(v);
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return res;
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}
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void _acb_vec_sort_pretty(acb_ptr vec, long len)
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{
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qsort(vec, len, sizeof(acb_struct), (__compar_fn_t) acb_cmp_pretty);
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}
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