File: ADD_CONV.doc

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\DOC ADD_CONV

\TYPE {ADD_CONV : conv}

\SYNOPSIS
Computes the sum of two natural number constants.

\KEYWORDS
conversion, number, arithmetic.

\DESCRIBE
If {n} and {m} are numeral constants (e.g. {0}, {1}, {2}, {3},...), then
{ADD_CONV "n + m"} returns the theorem:
{
   |- n + m = s
}
\noindent where {s} is the numeral that denotes the sum of the natural
numbers denoted by {n} and {m}.

\FAILURE
{ADD_CONV tm} fails if {tm} is not of the form  {"n + m"}, where {n} and
{m} are numerals.

\EXAMPLE
{
#ADD_CONV "75 + 25";;
|- 75 + 25 = 100
}
\ENDDOC