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https://github.com/vale981/arb
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31 lines
734 B
C
31 lines
734 B
C
/*
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Copyright (C) 2017 Fredrik Johansson
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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 "acb_elliptic.h"
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#include "acb_modular.h"
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void
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acb_elliptic_invariants(acb_t g2, acb_t g3, const acb_t tau, slong prec)
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{
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acb_struct t[2];
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acb_init(t);
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acb_init(t + 1);
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acb_modular_eisenstein(t, tau, 2, prec);
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acb_mul_ui(g2, t, 60, prec);
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acb_mul_ui(g3, t + 1, 140, prec);
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acb_clear(t);
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acb_clear(t + 1);
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}
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