Everywhere: Use AK/Math.h if applicable

AK's version should see better inlining behaviors, than the LibM one.
We avoid mixed usage for now though.

Also clean up some stale math includes and improper floatingpoint usage.

1 files changed, 2 insertions, 2 deletions

diff --git a/Userland/Libraries/LibVideo/MatroskaReader.h b/Userland/Libraries/LibVideo/MatroskaReader.h
index d3e0a6742c..33d23c3dd3 100644
--- a/Userland/Libraries/LibVideo/MatroskaReader.h
+++ b/Userland/Libraries/LibVideo/MatroskaReader.h
@@ -8,10 +8,10 @@
 
 #include "MatroskaDocument.h"
 #include <AK/Debug.h>
+#include <AK/Math.h>
 #include <AK/NonnullOwnPtrVector.h>
 #include <AK/Optional.h>
 #include <AK/OwnPtr.h>
-#include <math.h>
 
 namespace Video {
 
@@ -122,7 +122,7 @@ private:
                 u8 next_octet = read_octet();
                 result = (result << 8u) | next_octet;
             }
-            result -= pow(2, length * 7 - 1) - 1;
+            result -= AK::exp2<i64>(length * 7 - 1) - 1;
             return result;
         }