68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/* [efg]cvt -- compatibility functions for floating point formatting.
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C 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 License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C 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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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <float.h>
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#ifndef FLOAT_TYPE
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#define FLOAT_TYPE double
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#define FUNC_PREFIX
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#define FLOAT_FMT_FLAG
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#define MAXDIG (DBL_DIG + DBL_MAX_10_EXP)
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#endif
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#define APPEND(a, b) APPEND2 (a, b)
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#define APPEND2(a, b) a##b
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char *
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APPEND (FUNC_PREFIX, fcvt) (value, ndigit, decpt, sign)
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FLOAT_TYPE value;
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int ndigit, *decpt, *sign;
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{
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static char buf[MAXDIG];
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(void) fcvt_r (value, ndigit, decpt, sign, buf, sizeof buf);
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return buf;
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}
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char *
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APPEND (FUNC_PREFIX, ecvt) (value, ndigit, decpt, sign)
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FLOAT_TYPE value;
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int ndigit, *decpt, *sign;
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{
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static char buf[MAXDIG];
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(void) ecvt_r (value, ndigit, decpt, sign, buf, sizeof buf);
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return buf;
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}
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char *
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APPEND (FUNC_PREFIX, gcvt) (value, ndigit, buf)
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FLOAT_TYPE value;
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int ndigit;
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char *buf;
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{
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sprintf (buf, "%.*" FLOAT_FMT_FLAG "g", ndigit, value);
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return buf;
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}
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