NAME

retw, retw, retwsys, retwusys - write a warning to standard error and return

SYNOPSIS

#include <limb/output.h>
extern const char *PROG;

int retw(r, ...)
int retwu(r, ...)
int retwsys(r, ...)
int retwusys(r, ...)

DESCRIPTION

All of those are implemented as macros to write the specified strings as warning to stderr with a new line added at the end (via put(3)), then return r.

All of then actually use warn(3), warnu(3), warnsys(3) and warnusys(3) macros before calling return r.