mirror of
https://github.com/vale981/arb
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63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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Copyright (C) 2019 Julian Rüth
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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 <string.h>
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#include "arf.h"
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static void
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arf_get_fmpz_2exp_dump(fmpz_t m, fmpz_t e, const arf_t x) {
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if (arf_is_special(x))
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{
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fmpz_zero(m);
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if (arf_is_zero(x)) fmpz_zero(e);
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else if (arf_is_pos_inf(x)) fmpz_set_si(e, -1);
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else if (arf_is_neg_inf(x)) fmpz_set_si(e, -2);
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else if (arf_is_nan(x)) fmpz_set_si(e, -3);
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else
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{
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/* Impossible to happen; all the special values have been treated above. */
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flint_abort();
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}
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return;
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}
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arf_get_fmpz_2exp(m, e, x);
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}
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char *
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arf_dump_str(const arf_t x)
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{
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size_t res_len;
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char * res;
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fmpz_t mantissa, exponent;
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fmpz_init(mantissa);
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fmpz_init(exponent);
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arf_get_fmpz_2exp_dump(mantissa, exponent, x);
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res_len = (fmpz_sgn(mantissa) < 0) + fmpz_sizeinbase(mantissa, 16) + 1
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+ (fmpz_sgn(exponent) < 0) + fmpz_sizeinbase(exponent, 16);
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res = (char*)flint_malloc(res_len + 1);
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fmpz_get_str(res, 16, mantissa);
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strcat(res, " ");
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fmpz_get_str(res + strlen(res), 16, exponent);
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fmpz_clear(mantissa);
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fmpz_clear(exponent);
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if(strlen(res) != res_len) flint_abort(); /* assert */
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return res;
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}
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