cleanup: get_float convenience helper

more helpers like that can be added as needed

include/my_byteorder.h

@@ -16,6 +16,7 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
 
+#include <string.h>
 
 /*
   Macro for reading 32-bit integer from network byte order (big-endian)
@@ -51,4 +52,12 @@
 #include "little_endian.h"
 #endif
 
+/* convenienve helpers */
+static inline float get_float(const void *from)
+{
+  float to;
+  float4get(to, ((const uchar*)from));
+  return to;
+}
+
 #endif /* MY_BYTEORDER_INCLUDED */