[hackers] [libzahl] Fix typo || Mattias Andrée

[git]

commit 5cefa7c59cfaa10f2a692f35aa754897b546de3b
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Fri May 13 10:39:01 2016 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Fri May 13 10:39:01 2016 +0200

    Fix typo
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/doc/not-implemented.tex b/doc/not-implemented.tex
index 68c5d98..db9e2ca 100644
--- a/doc/not-implemented.tex
+++ b/doc/not-implemented.tex
@@ -360,7 +360,7 @@ using the following algorithm:
    \{
        z_t a, k;
        int odd;
-       if (zcmpi(n, 1) <= 1) \{
+       if (zcmpi(n, 1) <= 0) \{
            zseti(f, !zzero(n));
            zseti(f, zzero(n));
            return;