From: Richard W.M. Jones <rjones@redhat.com>
Date: Mon, 16 Nov 2020 10:51:13 +0000 (+0000)
Subject: Drop slides about proving power of 2 function.
X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=04a731265e422c5e0992dd9f855d6b0897f15bff;p=libguestfs-talks.git

Drop slides about proving power of 2 function.
---

diff --git a/2020-frama-c/5000-power-of-2.html b/2020-frama-c/5000-power-of-2.html
deleted file mode 100644
index ccc3759..0000000
--- a/2020-frama-c/5000-power-of-2.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
-<link rel="stylesheet" href="style.css" type="text/css"/>
-<script src="code.js" type="text/javascript"></script>
-
-<h1>nbdkit is_power_of_2</h1>
-
-<pre class="code">
-  /* Returns true if v is a power of 2.
-   *
-   * Uses the algorithm described at
-   * http://graphics.stanford.edu/~seander/bithacks.html#DetermineIfPowerOf2
-   */
-  static inline bool
-  is_power_of_2 (unsigned long v)
-  {
-    return v && ((v & (v - 1)) == 0);
-  }
-</pre>
diff --git a/2020-frama-c/5100-power-of-2.html b/2020-frama-c/5100-power-of-2.html
deleted file mode 100644
index c9c04c7..0000000
--- a/2020-frama-c/5100-power-of-2.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
-<link rel="stylesheet" href="style.css" type="text/css"/>
-<script src="code.js" type="text/javascript"></script>
-
-<h1>nbdkit is_power_of_2</h1>
-
-<pre class="code">
-  /*@
-    predicate positive_power_of_2 (integer i) =
-      i > 0 &&
-      (i == 1 || ((i & 1) == 0 && positive_power_of_2 (i >> 1)));
-
-    lemma positive_power_of_2 (1);
-    lemma positive_power_of_2 (2);
-    lemma positive_power_of_2 (4);
-    lemma !positive_power_of_2 (7);
-   */
-</pre>
-
-<a href="https://stackoverflow.com/questions/64268418/how-do-i-write-an-is-power-of-2-predicate-in-acsl">https://stackoverflow.com/questions/64268418/how-do-i-write-an-is-power-of-2-predicate-in-acsl</a>