# (wrong string) ée

From: <git_AT_suckless.org>
Date: Mon, 25 Jul 2016 17:04:29 +0200 (CEST)

commit a5ae82e67f914d9339ac22e0c2df9fe9b79b0f57
Author: Mattias Andrée <maandree_AT_kth.se>
AuthorDate: Mon Jul 25 17:03:54 2016 +0200
Commit: Mattias Andrée <maandree_AT_kth.se>
CommitDate: Mon Jul 25 17:03:54 2016 +0200

Fix another error in the solution for Powers of the golden ratio

Signed-off-by: Mattias Andrée <maandree_AT_kth.se>

diff --git a/doc/exercises.tex b/doc/exercises.tex
index 93f77e4..160067d 100644
--- a/doc/exercises.tex
+++ b/doc/exercises.tex
_AT_@ -488,7 +488,7 @@ the set of pseudoprimes.
\item \textbf{Powers of the golden ratio}

This was an information gathering exercise.
-For $n \ge 1$, $L_n = [\varphi^n]$, where
+For $n \ge 2$, $L_n = [\varphi^n]$, where
$L_n$ is the $n^\text{th}$ Lucas number.

\( \displaystyle{
_AT_@ -505,12 +505,14 @@ but for efficiency and briefness, we will use

\vspace{-1em}
\begin{alltt}
-void golden_pow(z_t r, z_t p)
+void golden_pow(z_t r, z_t n)
\{
- if (zsignum(p) <= 0)
- zsetu(r, zcmpi(p, -1) >= 0);
+ if (zsignum(n) <= 0)
+ zsetu(r, zcmpi(n, -1) >= 0);
+ else if (!zcmpu(n, 1))
+ zsetu(r, 2);
else
- lucas(r, p);
+ lucas(r, n);
\}
\end{alltt}

Received on Mon Jul 25 2016 - 17:04:29 CEST

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