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path: root/support/dktools/dk4maiwdbl.c
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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4maiwdbl.ctr
*/

/**	@file dk4maiwdbl.c The dk4maiwdbl module.
*/


#line 89 "dk4maiwdbl.ctr"


#include "dk4conf.h"

#if	DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif

#include "dk4maiwdbl.h"

#include "dk4strw.h"

#if DK4_HAVE_WCHAR_H
#ifndef WCHAR_H_INCLUDED
#include <wchar.h>
#define WCHAR_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_LOCALE_H
#ifndef	LOCALE_H_INCLUDED
#include <locale.h>
#define	LOCALE_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_STDLIB_H
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define	STDLIB_H_INCLUDED 1
#endif
#endif

#if	DK4_HAVE_MATH_H
#ifndef	MATH_H_INCLUDED
#if	DK4_ON_WINDOWS
#ifndef	_USE_MATH_DEFINES
#define	_USE_MATH_DEFINES 1
#endif
#endif
#include <math.h>
#define	MATH_H_INCLUDED 1
#endif
#endif




/**	Locale setting to use when retrieving number.
*/
static const char locale_kw[] = { "C" };



static
int
dk4ma_internal_input_wc_double(
  double	 *rp,
  const wchar_t	 *src,
  const wchar_t	**endptr,
  int		  atg,
  dk4_er_t	 *erp
)
{
#if DK4_HAVE_WCSTOD || DK4_HAVE__WCSTOD
  double	 val 	= 0.0;
  wchar_t	*myend	= NULL;
  int		 back	= 0;
  int		 xerr	= 0;
#if	DK4_USE_ASSERT
  assert(NULL != rp);
  assert(NULL != src);
#endif
  if ((NULL != rp) && (NULL != src)) {
    errno = 0;
#if DK4_HAVE_WCSTOD
    val = wcstod(src, &myend);
#else
    val = _wcstod(src, &myend);
#endif
    xerr = errno;
    if (NULL != endptr) { *endptr = myend; }
    if (myend != src) {
      switch (atg) {
        case 2: {
          back = 1;
        } break;
        case 1: {
          if (NULL != dk4strw_start(myend, NULL)) {
	    dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	  } else {
	    back = 1;
	  }
        } break;
        default: {
          if (L'\0' != *myend) {
	    back = 1;
	  } else {
	    dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	  }
        } break;
      }
      if (1 == back) {
        if (ERANGE == xerr) {
	  if (HUGE_VAL == val) {
	    back = 0;
	    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	  }
	  if ((-HUGE_VAL) == val) {
	    back = 0;
	    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	  }
	  if (0.0 == val) {
	    back = 0;
	    dk4error_set_simple_error_code(erp, DK4_E_MATH_UNDERFLOW);
	  }
	}
	if (EINVAL == xerr) {
	  if (0.0 == val) {
	    back = 0;
	    dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	  }
	}
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
    }
    if (1 == back) {
      *rp = val;
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
#else
#if DK4_USE_PRINTF_SCANF
  double	 val	= 0.0;
  int		 back	= 0;
#if	DK4_USE_ASSERT
  assert(NULL != rp);
  assert(NULL != src);
#endif
  if ((NULL != rp) && (NULL != src)) {
    if (1 == swscanf(src, L"%lf", &val)) {
      *rp = val;
      back = 1;
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
#else
  dk4error_set_simple_error_code(erp, DK4_E_NOT_SUPPORTED);
  return 0;
#endif
#endif
}



int
dk4ma_input_wc_double(
  double	 *rp,
  const wchar_t	 *src,
  const wchar_t	**endptr,
  int		  atg,
  dk4_er_t	 *erp
)
{
#if	(DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC)
  char	*oldloc	= NULL;
#endif
  int	 back	= 0;
#if	DK4_USE_ASSERT
  assert(NULL != rp);
  assert(NULL != src);
#endif
#if	(DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC)
  oldloc = setlocale(LC_NUMERIC, NULL);
  (void)setlocale(LC_NUMERIC, locale_kw);
  back = dk4ma_internal_input_wc_double(rp, src, endptr, atg, erp);
  (void)setlocale(LC_NUMERIC, oldloc);
#else
  back = dk4ma_internal_input_wc_double(rp, src, endptr, atg, erp);
#endif
  return back;
}