return (floor(x));
}
+//***************************************************************
+//
+// trunc()
+//
+// Emulates trunc() using floor() and ceil().
+//
+// Returns:
+//
+// On Success: The largest integer whose magnitude is less
+// than or equal to 'x' (regardless of sign).
+// On Failure: None
+//
+LIBPBD_API double PBD_APICALLTYPE
+trunc(double x)
+{
+ if (x < 0)
+ return (ceil(x));
+
+ return (floor(x));
+}
+
+//***************************************************************
+//
+// log2()
+//
+// Emulates C99 log2() using log().
+//
+// Returns:
+//
+// On Success: The binary (base-2) logarithm of 'x'
+// (e.g. log2(1024) == 10).
+// On Failure: None, except that calling log(x) should generate
+// an appropriate error for us (such as ERANGE etc).
+//
+LIBPBD_API double PBD_APICALLTYPE
+log2(double x)
+{
+ return (log(x) / log((double)2.0));
+}
+
namespace PBD {
//***************************************************************