vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
/* mpfr_out_str -- output a floating-point number to a stream
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Copyright 1999, 2001-2002, 2004, 2006-2025 Free Software Foundation, Inc.
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Contributed by the Pascaline and Caramba projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The GNU MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MPFR Library; see the file COPYING.LESSER.
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If not, see <https://www.gnu.org/licenses/>. */
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#include "mpfr-impl.h"
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/* Warning! S should not contain "%". */
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#define OUT_STR_RET(S) \
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do \
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{ \
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int r; \
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r = fprintf (stream, (S)); \
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return r < 0 ? 0 : r; \
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} \
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while (0)
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size_t
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mpfr_out_str (FILE *stream, int base, size_t n_digits, mpfr_srcptr op,
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mpfr_rnd_t rnd_mode)
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{
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char *s, *s0;
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size_t l;
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mpfr_exp_t e;
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int err, r;
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MPFR_ASSERTN ((base >= -36 && base <= -2) || (base >= 2 && base <= 62));
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if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (op)))
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{
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if (MPFR_IS_NAN (op))
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OUT_STR_RET ("@NaN@");
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else if (MPFR_IS_INF (op))
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OUT_STR_RET (MPFR_IS_POS (op) ? "@Inf@" : "-@Inf@");
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else
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{
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MPFR_ASSERTD (MPFR_IS_ZERO (op));
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OUT_STR_RET (MPFR_IS_POS (op) ? "0" : "-0");
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}
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}
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s = mpfr_get_str (NULL, &e, base, n_digits, op, rnd_mode);
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s0 = s;
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/* for op=3.1416 we have s = "31416" and e = 1 */
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l = strlen (s) + 1; /* size of allocated block returned by mpfr_get_str
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- may be incorrect, as only an upper bound? */
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/* outputs possible sign and significand */
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err = (*s == '-' && fputc (*s++, stream) == EOF)
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|| fputc (*s++, stream) == EOF /* leading digit */
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|| fputc ((unsigned char) MPFR_DECIMAL_POINT, stream) == EOF
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|| fputs (s, stream) == EOF; /* trailing significand */
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mpfr_free_func (s0, l);
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if (MPFR_UNLIKELY (err))
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return 0;
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e--; /* due to the leading digit */
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/* outputs exponent */
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r = fprintf (stream, (base <= 10 ?
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"e%" MPFR_EXP_FSPEC "d" :
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"@%" MPFR_EXP_FSPEC "d"), (mpfr_eexp_t) e);
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/* Check error from fprintf or integer overflow (wrapping) on size_t */
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if (MPFR_UNLIKELY (r < 0 || l + r < l))
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return 0;
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return l + r;
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}
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