mirror of https://github.com/macssh/macssh.git
66 lines
1.9 KiB
C
Executable File
66 lines
1.9 KiB
C
Executable File
/* mpfr_out_str -- output a floating-point number to a stream
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Copyright (C) 1999 PolKA project, Inria Lorraine and Loria
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This file is part of the MPFR Library.
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The MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The 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 Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include <stdio.h>
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#include <math.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "mpfr.h"
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size_t
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#if __STDC__
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mpfr_out_str (FILE *stream, int base, size_t n_digits, mpfr_srcptr op,
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unsigned char rnd_mode)
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#else
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mpfr_out_str (stream, base, n_digits, op, rnd_mode)
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FILE *stream;
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int base;
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size_t n_digits;
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mpfr_srcptr op;
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unsigned char rnd_mode;
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#endif
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{
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char *s,*s0; size_t l; mp_exp_t e;
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if (FLAG_NAN(op)) { fprintf(stream, "NaN"); return 3; }
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if (!NOTZERO(op)) { fprintf(stream, "0"); return 1; }
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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;
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if (*s == '-') fputc(*s++, stream);
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fputc(*s++, stream); e--; /* writes leading digit */
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fputc('.', stream); /* decimal point */
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fputs(s, stream); /* rest of mantissa */
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if (e) {
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fputc((base>10) ? '@' : 'e', stream); l++;
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sprintf(s, "%ld", e);
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l += strlen(s);
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fprintf(stream, "%s", s);
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}
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(*_mp_free_func)(s0, l);
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return l;
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}
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