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%% options
copyright owner = Dirk Krause
copyright year = 2014-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file dk3madsi.h Convert string to double value.
*/
#include <dk3conf.h>
#include <stdio.h>
#if DK3_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if DK3_HAVE_STDINT
#include <stdint.h>
#endif
#if DK3_HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#if DK3_HAVE_LIMITS_H
#include <limits.h>
#endif
#if DK3_HAVE_MATH_H
#include <math.h>
#endif
#if DK3_HAVE_FLOAT_H
#include <float.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Retrieve double value from string.
@param rp Result variable pointer.
@param src Text to convert.
@param ec Pointer to error code variable, may be NULL.
@return 1 on success, 0 on error.
On error the error code variable is set to
DK3_ERROR_INVALID_ARGS (one of the pointers rp or src is NULL)
or DK3_ERROR_SYNTAX (text does not contain a double value).
*/
int
dk3ma_d_from_string(double *rp, dkChar const *src, int *ec);
/** Retrieve double value from string.
@param rp Result variable pointer.
@param src Text to convert.
@param ec Pointer to error code variable, may be NULL.
@return 1 on success, 0 on error.
On error the error code variable is set to
DK3_ERROR_INVALID_ARGS (one of the pointers rp or src is NULL)
or DK3_ERROR_SYNTAX (text does not contain a double value).
*/
int
dk3ma_d_from_c8_string(double *rp, char const *src, int *ec);
#ifdef __cplusplus
}
#endif
%% module
#include "dk3ma.h"
#if DK3_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if DK3_HAVE_UNISTD_H
#include <unistd.h>
#endif
#if DK3_HAVE_STRING_H
#include <string.h>
#endif
#if DK3_HAVE_ERRNO_H
#include <errno.h>
#endif
$!trace-include
int
dk3ma_d_from_c8_string(double *rp, char const *src, int *ec)
{
#if DK3_HAVE_STRTOD
char *endptr = NULL;
double val = 0.0;
int back = 0;
$? "+ dk3ma_d_from_string \"%!8s\"", TR_8STR(src)
if ((NULL != rp) && (NULL != src)) {
errno = 0;
val = strtod(src, &endptr);
if (endptr) {
if ('\0' == *endptr) {
back = 1;
} else {
if (endptr != src) {
back = 1;
}
if (NULL != ec) { *ec = DK3_ERROR_SYNTAX; }
}
} else {
back = 1;
}
if (0 != back) {
if (ERANGE == errno) {
if ((HUGE_VAL == val) || (-HUGE_VAL == val) || (0.0 == val)) {
back = 0;
if (NULL != ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
}
}
}
*rp = val;
} else {
if (NULL != ec) { *ec = DK3_ERROR_INVALID_ARGS; }
} $? "- dk3ma_d_from_string %lg %d", val, back
return back;
#else
double val = 0.0;
int back = 0;
$? "+ dk3ma_d_from_string \"%!8s\"", TR_8STR(src)
if ((NULL != rp) && (NULL != src)) {
if (1 == sscanf(src, "%lf", &val)) {
*rp = val;
back = 1;
} else {
if (NULL != ec) { *ec = DK3_ERROR_SYNTAX; }
}
} else {
if (NULL != ec) { *ec = DK3_ERROR_INVALID_ARGS; }
} $? "- dk3ma_d_from_string %lg %d", val, back
return back;
#endif
}
int
dk3ma_d_from_string(double *rp, dkChar const *src, int *ec)
{
#if DK3_CHAR_SIZE > 1
#if DK3_HAVE_WCSTOD
dkChar *endptr = NULL;
double val;
int back = 0;
$? "+ dk3ma_d_from_string \"%!ds\"", TR_STR(src)
if ((NULL != rp) && (NULL != src)) {
errno = 0;
val = wcstod(src, &endptr);
if (endptr) {
if ('\0' == *endptr) {
back = 1;
} else {
if (endptr != src) {
back = 1;
}
if (NULL != ec) { *ec = DK3_ERROR_SYNTAX; }
}
} else {
back = 1;
}
if (0 != back) {
if (ERANGE == errno) {
if ((HUGE_VAL == val) || (-HUGE_VAL == val) || (0.0 == val)) {
back = 0;
if (NULL != ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
}
}
}
*rp = val;
} else {
if (NULL != ec) { *ec = DK3_ERROR_INVALID_ARGS; }
} $? "- dk3ma_d_from_string %lg %d", val, back
return back;
#else
double val = 0.0;
int back = 0;
$? "+ dk3ma_d_from_string \"%!ds\"", TR_STR(src)
if ((NULL != rp) && (NULL != src)) {
if (1 == swscanf(src, dkT("%lf"), &val)) {
*rp = val;
back = 1;
} else {
if (NULL != ec) { *ec = DK3_ERROR_SYNTAX; }
}
} else {
if (NULL != ec) { *ec = DK3_ERROR_INVALID_ARGS; }
} $? "- dk3ma_d_from_string %lg %d", val, back
return back;
#endif
#else
return (dk3ma_d_from_c8_string(rp, src, ec));
#endif
}
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