explain_strtod(3) | Library Functions Manual | explain_strtod(3) |
explain_strtod - explain strtod(3) errors
#include <libexplain/strtod.h>
const char *explain_strtod(const char *nptr, char **endptr);
const char *explain_errno_strtod(int errnum, const char *nptr, char **endptr);
void explain_message_strtod(char *message, int message_size, const char *nptr,
char **endptr);
void explain_message_errno_strtod(char *message, int message_size, int errnum,
const char *nptr, char **endptr);
These functions may be used to obtain explanations for errors returned by the strtod(3) system call.
const char *explain_strtod(const char *nptr, char **endptr);
The explain_strtod function is used to obtain an explanation of an error returned by the strtod(3) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail.
The errno global variable will be used to obtain the error value to be decoded.
Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library.
Example: This function is intended to be used in a fashion similar to the following example:
{
exit(EXIT_FAILURE); }
The above code example is available pre‐packaged as the explain_strtod_or_die(3) function.
const char *explain_errno_strtod(int errnum, const char *nptr, char **endptr);
The explain_errno_strtod function is used to obtain an explanation of an error returned by the strtod(3) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail.
Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library.
Example: This function is intended to be used in a fashion similar to the following example:
{
int err = errno;
exit(EXIT_FAILURE); }
The above code example is available pre‐packaged as the explain_strtod_or_die(3) function.
void explain_message_strtod(char *message, int message_size, const char *nptr, char **endptr);
The explain_message_strtod function is used to obtain an explanation of an error returned by the strtod(3) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail.
The errno global variable will be used to obtain the error value to be decoded.
Example: This function is intended to be used in a fashion similar to the following example:
{explain_message_strtod(message, sizeof(message), nptr, endptr);
char message[3000];
fprintf(stderr, "%s\n", message);
exit(EXIT_FAILURE); }
The above code example is available pre‐packaged as the explain_strtod_or_die(3) function.
void explain_message_errno_strtod(char *message, int message_size, int errnum, const char *nptr, char **endptr);
The explain_message_errno_strtod function is used to obtain an explanation of an error returned by the strtod(3) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail.
Example: This function is intended to be used in a fashion similar to the following example:
{explain_message_errno_strtod(message, sizeof(message), err, nptr, endptr);
int err = errno;
char message[3000];
fprintf(stderr, "%s\n", message);
exit(EXIT_FAILURE); }
The above code example is available pre‐packaged as the explain_strtod_or_die(3) function.
libexplain version 1.4
Copyright (C) 2009 Peter Miller