.\"determine whether or not a given variable is an error code .TH errorp 3 "5 Sep 1994" MudOS "LPC Library Functions" .SH NAME errorp() - determine whether or not a given variable is an error code .SH SYNOPSIS int errorp( mixed arg ); .SH DESCRIPTION Returns 1 if `arg' is an integer that is an error code. .PP Eventually efuns will be modified to return standard error codes so that code like this will be possible: .IP .nf if (errorp(result = efun_call())) printf("error = %d\\n", result); .fi .PP In future, there will also be a perror(result) efun to return error string that goes with a particular error integer. .SH SEE ALSO nullp(3), undefinedp(3)