=head1 NAME
-ERR_error_string - obtain human-readable error message
+ERR_error_string, ERR_error_string_n, ERR_lib_error_string,
+ERR_func_error_string, ERR_reason_error_string - obtain human-readable
+error message
=head1 SYNOPSIS
#include <openssl/err.h>
char *ERR_error_string(unsigned long e, char *buf);
- char *ERR_error_string_n(unsigned long e, char *buf, size_t len);
+ void ERR_error_string_n(unsigned long e, char *buf, size_t len);
const char *ERR_lib_error_string(unsigned long e);
const char *ERR_func_error_string(unsigned long e);