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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file
Double to char text conversion using the more secure functions
_snprintf_s(), _snprintf() or snprintf() instead of sprintf()
if available.
CRT on Windows: Required.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif
#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define STDLIB_H_INCLUDED 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Convert double value to string.
@param dptr Destination buffer pointer.
@param szdptr Size of destination buffer.
@param v Value to convert.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if dptr is NULL or szdptr is less than 2,
- DK4_E_BUFFER_TOO_SMALL<br>
if the destination buffer is too small to store the string.
*/
int
dk4double_to_string_c8(char *dptr, size_t szdptr, double v, dk4_er_t *erp);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4conf.h"
#include "dk4dblc8.h"
#include "dk4str8.h"
int
dk4double_to_string_c8(char *dptr, size_t szdptr, double v, dk4_er_t *erp)
{
#if DK4_HAVE__SNPRINTF_S
/* +++ _snprintf_s */
char buf[64];
int back = 0;
int res = 0;
if (NULL != dptr) { *dptr = '\0'; }
if ((NULL != dptr) && (1 < szdptr)) {
res = _snprintf_s(buf, sizeof(buf), (sizeof(buf)-1), "%lg", v);
if ((0 < res) && ((size_t)res < sizeof(buf))) {
buf[res] = '\0';
back = dk4str8_cpy_s(dptr, szdptr, buf, erp);
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
/* --- _snprintf_s */
#else
#if DK4_HAVE__SNPRINTF
/* +++ _snprintf */
char buf[64];
int back = 0;
int res = 0;
if (NULL != dptr) { *dptr = '\0'; }
if ((NULL != dptr) && (1 < szdptr)) {
res = _snprintf(buf, sizeof(buf), "%lg", v);
if ((0 < res) && ((size_t)res < sizeof(buf))) {
buf[res] = '\0';
back = dk4str8_cpy_s(dptr, szdptr, buf, erp);
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
/* --- _snprintf */
#else
#if DK4_HAVE_SNPRINTF
/* +++ snprintf */
char buf[64];
int back = 0;
int res = 0;
if (NULL != dptr) { *dptr = '\0'; }
if ((NULL != dptr) && (1 < szdptr)) {
res = snprintf(buf, sizeof(buf), "%lg", v);
if ((0 < res) && ((size_t)res < sizeof(buf))) {
buf[res] = '\0';
back = dk4str8_cpy_s(dptr, szdptr, buf, erp);
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
/* --- snprintf */
#else
/* +++ sprintf */
char buf[64];
int back = 0;
int res = 0;
if (NULL != dptr) { *dptr = '\0'; }
if ((NULL != dptr) && (1 < szdptr)) {
sprintf(buf, "%lg", v);
back = dk4str8_cpy_s(dptr, szdptr, buf, erp);
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
/* --- sprintf */
#endif
#endif
#endif
}
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