conv_cnote_signal
conv_cnote_signal(w, CONV_FMT_DECIMAL, &conv_buf.inv));
conv_cnote_signal(w, CONV_FMT_DECIMAL, &conv_buf.inv));
conv_cnote_signal(v_si_signo, CONV_FMT_DECIMAL, &inv_buf));
extern const char *conv_cnote_signal(Word, Conv_fmt_flags_t,
return (conv_cnote_signal(what, fmt_flags, inv_buf));