Tcsh: Searching history using Ctrl-P and Ctrl-N

Question

What are the equivalent functions in tcsh for the following zsh functions?

up-line-or-history
history-beginning-search-backward
down-line-or-history
history-beginning-search-forward

I have the following code in my ,zsh that I am hoping to translate in full to my ".tcsh". The code below is supposed to bind Ctrl-P and Ctrl-N to such history search functions:

up-line-or-history-beginning-search () {
  if [[ -n $PREBUFFER ]]; then
    zle up-line-or-history
  else
    zle history-beginning-search-backward
  fi
}
down-line-or-history-beginning-search () {
  if [[ -n $PREBUFFER ]]; then
    zle down-line-or-history
  else
    zle history-beginning-search-forward
  fi
}


zle -N up-line-or-history-beginning-search
zle -N down-line-or-history-beginning-search

bindkey '^P' up-line-or-history-beginning-search
bindkey '^N' down-line-or-history-beginning-search

Any ideas about what the equivalent tcsh code would look like?