Fix typo - libzahl - big integer library
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 (DIR) commit 7e8ea5ca2505686932b489e0aa1df0b3f0433e19
 (DIR) parent 157c52efce3fce61af6d411584c7ce35e371be07
 (HTM) Author: Mattias Andrée <maandree@kth.se>
       Date:   Sat, 30 Jul 2016 00:04:21 +0200
       
       Fix typo
       
       Signed-off-by: Mattias Andrée <maandree@kth.se>
       
       Diffstat:
         M doc/exercises.tex                   |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/doc/exercises.tex b/doc/exercises.tex
       @@ -284,7 +284,7 @@ Implement the function
        \noindent
        which calculates $r = {}^n{}b \text{ mod } m$, where
        ${}^0{}b = 1$, ${}^1{}b = b$, ${}^2{}b = b^b$,
       -${}^3{}b = b^{b^b}$, ${}^b{}b = b^{b^{b^b}}$, and so on.
       +${}^3{}b = b^{b^b}$, ${}^4{}b = b^{b^{b^b}}$, and so on.
        You can assume $b > 0$ and $m > 0$. You can also assume
        \texttt{r}, \texttt{b}, and \texttt{m} are mutually
        unique pointers.