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diff --git a/newlib/libm/machine/spu/headers/fdim.h b/newlib/libm/machine/spu/headers/fdim.h
new file mode 100644
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+++ b/newlib/libm/machine/spu/headers/fdim.h
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+/*
+  (C) Copyright 2001,2006,
+  International Business Machines Corporation,
+  Sony Computer Entertainment, Incorporated,
+  Toshiba Corporation,
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+    * Neither the names of the copyright holders nor the names of their
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef _FDIM_H_
+#define _FDIM_H_	1
+
+#include <spu_intrinsics.h>
+#include "headers/vec_literal.h"
+
+/* fdim - compute the positive difference of x and y.
+ */
+static __inline double _fdim(double x, double y)
+{
+  vec_double2 v;
+  vec_uint4 mask;
+
+  v = spu_promote(x - y, 0);
+  mask = (vec_uint4)spu_shuffle(v, v, VEC_SPLAT_U8(0));
+  v = spu_andc(v, (vec_double2)spu_rlmaska(mask, -31));
+
+  return (spu_extract(v, 0));
+}
+#endif /* _FDIM_H_ */