65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
// This is part of the iostream library, providing -*- C++ -*- input/output.
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// Copyright (C) 1991 Per Bothner.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free
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// Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "streambuf.h"
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#include <stdarg.h>
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#include <stddef.h>
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#define _fstat(x, y) fstat(x,y)
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#define _isatty(fd) isatty(fd)
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extern int __cvt_double(double number, register int prec, int flags,
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int *signp, int fmtch, char *startp, char *endp);
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/*#define USE_MALLOC_BUF*/
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#ifndef USE_MALLOC_BUF
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#define ALLOC_BUF(size) new char[size]
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#define FREE_BUF(ptr) delete [] (ptr)
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#else
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#define ALLOC_BUF(size) (char*)malloc(size)
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#define FREE_BUF(ptr) free(ptr)
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#endif
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#define USE_DTOA
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// Advantages:
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// - Input gets closest value
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// - Output emits string that when read yields identical value.
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// - Handles Infinity and NaNs (but not re-readable).
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// Disadvantages of dtoa:
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// - May not work for all double formats.
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// - Big chunck of code.
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// - Not reentrant - uses atatic variables freelist,
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// result, result_k in dtoa
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// (plus initializes p5s, HOWORD, and LOWORD).
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#ifdef USE_DTOA
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extern "C" double _Xstrtod(const char *s00, char **se);
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#define strtod(s, e) _Xstrtod(s, e)
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extern "C" char *dtoa(double d, int mode, int ndigits,
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int *decpt, int *sign, char **rve);
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extern int __outfloat(double value, streambuf *sb, char mode,
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int width, int precision, __fmtflags flags,
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char sign_mode, char fill);
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#endif
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