first commit, SM2-DSA only

doc/crypto/ERR_put_error.pod

@@ -0,0 +1,44 @@
+=pod
+
+=head1 NAME
+
+ERR_put_error, ERR_add_error_data - record an error
+
+=head1 SYNOPSIS
+
+ #include <openssl/err.h>
+
+ void ERR_put_error(int lib, int func, int reason, const char *file,
+         int line);
+
+ void ERR_add_error_data(int num, ...);
+
+=head1 DESCRIPTION
+
+ERR_put_error() adds an error code to the thread's error queue. It
+signals that the error of reason code B<reason> occurred in function
+B<func> of library B<lib>, in line number B<line> of B<file>.
+This function is usually called by a macro.
+
+ERR_add_error_data() associates the concatenation of its B<num> string
+arguments with the error code added last.
+
+L<ERR_load_strings(3)|ERR_load_strings(3)> can be used to register
+error strings so that the application can a generate human-readable
+error messages for the error code.
+
+=head1 RETURN VALUES
+
+ERR_put_error() and ERR_add_error_data() return
+no values.
+
+=head1 SEE ALSO
+
+L<err(3)|err(3)>, L<ERR_load_strings(3)|ERR_load_strings(3)>
+
+=head1 HISTORY
+
+ERR_put_error() is available in all versions of SSLeay and OpenSSL.
+ERR_add_error_data() was added in SSLeay 0.9.0.
+
+=cut