mirror of
https://github.com/vale981/arb
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45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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/*=============================================================================
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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) 2013 Fredrik Johansson
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******************************************************************************/
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#include "gamma.h"
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#include "zeta.h"
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void
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gamma_lgamma_series_at_one(fmprb_ptr u, long len, long prec)
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{
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long i;
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if (len > 0) fmprb_zero(u);
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if (len > 1) fmprb_const_euler(u + 1, prec);
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if (len > 2) zeta_ui_vec(u + 2, 2, len - 2, prec);
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for (i = 2; i < len; i++)
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fmprb_div_ui(u + i, u + i, i, prec);
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for (i = 1; i < len; i += 2)
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fmprb_neg(u + i, u + i);
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}
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