osx man page for tcl_signalmsg

Tcl_SignalId(3) 					      Tcl Library Procedures						   Tcl_SignalId(3)

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NAME
       Tcl_SignalId, Tcl_SignalMsg - Convert signal codes

SYNOPSIS
       #include <tcl.h>

       const char *
       Tcl_SignalId(sig)

       const char *
       Tcl_SignalMsg(sig)

ARGUMENTS
       int sig (in)	     A POSIX signal number such as SIGPIPE.
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DESCRIPTION
       Tcl_SignalId and Tcl_SignalMsg return a string representation of the provided signal number (sig).  Tcl_SignalId returns a machine-readable
       textual identifier such as "SIGPIPE".  Tcl_SignalMsg returns a human-readable string such as "bus error".  The strings  returned  by  these
       functions are statically allocated and the caller must not free or modify them.

KEYWORDS
       signals, signal numbers

Tcl									8.3							   Tcl_SignalId(3)