Index: libmpc/trunk/common/fastmath.c
===================================================================
--- libmpc/trunk/common/fastmath.c	(revision 333)
+++ libmpc/trunk/common/fastmath.c	(revision 333)
@@ -0,0 +1,77 @@
+/*
+ * Musepack audio compression
+ * Copyright (C) 1999-2004 Buschmann/Klemm/Piecha/Wolf
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "mpc/mpcmath.h"
+
+#ifdef FAST_MATH
+
+const float  tabatan2   [ 2*TABSTEP+1] [2];
+const float  tabcos     [26*TABSTEP+1] [2];
+const float  tabsqrt_ex [256];
+const float  tabsqrt_m  [   TABSTEP+1] [2];
+
+
+void   Init_FastMath ( void )
+{
+    int i; mpc_floatint X, Y; double xm, x0, xp, x, y; float* p;
+
+    p = (float*) tabatan2;
+    for ( i = -TABSTEP; i <= TABSTEP; i++ ) {
+        xm = atan ((i-0.5)/TABSTEP);
+        x0 = atan ((i+0.0)/TABSTEP);
+        xp = atan ((i+0.5)/TABSTEP);
+        x  = x0/2 + (xm + xp)/4;
+        y  = xp - xm;
+        *p++ = x;
+        *p++ = y;
+    }
+
+    p = (float*) tabcos;
+    for ( i = -13*TABSTEP; i <= 13*TABSTEP; i++ ) {
+        xm = cos ((i-0.5)/TABSTEP);
+        x0 = cos ((i+0.0)/TABSTEP);
+        xp = cos ((i+0.5)/TABSTEP);
+        x  = x0/2 + (xm + xp)/4;
+        y  = xp - xm;
+        *p++ = x;
+        *p++ = y;
+    }
+
+    p = (float*) tabsqrt_ex;
+    for ( i = 0; i < 255; i++ ) {
+        X.n = (i << 23);
+        Y.n = (i << 23) + (1<<23) - 1;
+        *p++ = sqrt(X.f);
+    }
+    X.n  = (255 << 23) - 1;
+    *p++ = sqrt(X.f);
+
+    p = (float*) tabsqrt_m;
+    for ( i = 1*TABSTEP; i <= 2*TABSTEP; i++ ) {
+        xm = sqrt ((i-0.5)/TABSTEP);
+        x0 = sqrt ((i+0.0)/TABSTEP);
+        xp = sqrt ((i+0.5)/TABSTEP);
+        x  = x0/2 + (xm + xp)/4;
+        y  = xp - xm;
+        *p++ = x;
+        *p++ = y;
+    }
+}
+
+#endif