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doc: more pointers to the examples

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* doc/bison.texi (Infix Calc): Here.
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Akim Demaille
2021-08-05 07:57:59 +02:00
parent 85032e9630
commit d4b195ece6
1 changed files with 10 additions and 7 deletions
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doc/bison.texi
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@@ -2204,7 +2204,10 @@ $
@cindex @code{calc}
@cindex calculator, infix notation
We now modify rpcalc to handle infix operators instead of postfix. Infix
We now modify rpcalc to handle infix operators instead of
postfix.@footnote{A similar example, but using an unambiguous grammar rather
than precedence and associativity annotations, is available as
@file{examples/c/calc}.} Infix
notation involves the concept of operator precedence and the need for
parentheses nested to arbitrary depth. Here is the Bison code for
@file{calc.y}, an infix desk-top calculator.
@@ -2560,12 +2563,12 @@ valid input, in comments, in literal strings, and so on.
@cindex @code{mfcalc}
@cindex calculator, multi-function
Now that the basics of Bison have been discussed, it is time to move on to
a more advanced problem.@footnote{The sources of @command{mfcalc} are available as
@file{examples/c/mfcalc}.} The above calculators provided only five
functions, @samp{+}, @samp{-}, @samp{*}, @samp{/} and @samp{^}. It would
be nice to have a calculator that provides other mathematical functions such
as @code{sin}, @code{cos}, etc.
Now that the basics of Bison have been discussed, it is time to move on to a
more advanced problem.@footnote{The sources of @command{mfcalc} are
available as @file{examples/c/mfcalc}.} The above calculators provided only
five functions, @samp{+}, @samp{-}, @samp{*}, @samp{/} and @samp{^}. It
would be nice to have a calculator that provides other mathematical
functions such as @code{sin}, @code{cos}, etc.
It is easy to add new operators to the infix calculator as long as they are
only single-character literals. The lexical analyzer @code{yylex} passes