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diff --git a/wirish/wirish_math.h b/wirish/wirish_math.h
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+/* *****************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 Perry Hung.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ * ****************************************************************************/
+
+#ifndef _WIRING_MATH_H_
+#define _WIRING_MATH_H_
+
+#include <math.h>
+
+void randomSeed(unsigned int);
+long random(long);
+long random(long, long);
+long map(long, long, long, long, long);
+
+#define PI              3.1415926535897932384626433832795
+#define HALF_PI         1.5707963267948966192313216916398
+#define TWO_PI          6.283185307179586476925286766559
+#define DEG_TO_RAD      0.017453292519943295769236907684886
+#define RAD_TO_DEG      57.295779513082320876798154814105
+
+#define min(a,b)                ((a)<(b)?(a):(b))
+#define max(a,b)                ((a)>(b)?(a):(b))
+#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+#define round(x)                ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#define radians(deg)            ((deg)*DEG_TO_RAD)
+#define degrees(rad)            ((rad)*RAD_TO_DEG)
+#define sq(x)                   ((x)*(x))
+
+/* undefine stdlib's abs if encountered */
+#ifdef abs
+#undef abs
+#endif
+#define abs(x)                  (((x) > 0)  ?  (x) : -(unsigned)(x))
+
+#endif
+