Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
function::signal_str - Returns the string representation of a signal number
SYNOPSIS
signal_str(num:)
ARGUMENTS
num
the signal number to convert to string.
SEE ALSO
tapset::signal(3stap)
SystemTap Tapset Reference March 2016 FUNCTION::SIGNAL_STR(3stap)