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/* Compatibility functions for floating point formatting.
Copyright (C) 1995-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/param.h>
#include <libc-lock.h>
#include <math_ldbl_opt.h>
#ifndef SPRINTF
# define SPRINTF sprintf
#endif
#define APPEND(a, b) APPEND2 (a, b)
#define APPEND2(a, b) a##b
#define FCVT_BUFFER APPEND (FUNC_PREFIX, fcvt_buffer)
#define FCVT_BUFPTR APPEND (FUNC_PREFIX, fcvt_bufptr)
#define ECVT_BUFFER APPEND (FUNC_PREFIX, ecvt_buffer)
static char FCVT_BUFFER[MAXDIG];
static char ECVT_BUFFER[MAXDIG];
libc_freeres_ptr (static char *FCVT_BUFPTR);
char *
__FCVT (FLOAT_TYPE value, int ndigit, int *decpt, int *sign)
{
if (FCVT_BUFPTR == NULL)
{
if (__FCVT_R (value, ndigit, decpt, sign, FCVT_BUFFER, MAXDIG) != -1)
return FCVT_BUFFER;
FCVT_BUFPTR = (char *) malloc (FCVT_MAXDIG);
if (FCVT_BUFPTR == NULL)
return FCVT_BUFFER;
}
(void) __FCVT_R (value, ndigit, decpt, sign, FCVT_BUFPTR, FCVT_MAXDIG);
return FCVT_BUFPTR;
}
char *
__ECVT (FLOAT_TYPE value, int ndigit, int *decpt, int *sign)
{
(void) __ECVT_R (value, ndigit, decpt, sign, ECVT_BUFFER, MAXDIG);
return ECVT_BUFFER;
}
char *
__GCVT (FLOAT_TYPE value, int ndigit, char *buf)
{
SPRINTF (buf, "%.*" FLOAT_FMT_FLAG "g", MIN (ndigit, NDIGIT_MAX), value);
return buf;
}
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