Upgrade to softfloat3e.

This should solve licensing problems as well.

src/cpu/softfloat3e/poly.h

@@ -0,0 +1,43 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id$
+/////////////////////////////////////////////////////////////////////////
+//
+//   Copyright (c) 2003-2018 Stanislav Shwartsman
+//          Written by Stanislav Shwartsman [sshwarts at sourceforge net]
+//
+//  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 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+//
+/////////////////////////////////////////////////////////////////////////
+
+#ifndef _POLY_H_
+#define _POLY_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+float128_t EvenPoly(float128_t x, const float128_t *arr, int n, softfloat_status_t &status);
+float128_t OddPoly(float128_t x, const float128_t *arr, int n, softfloat_status_t &status);
+#else
+float128_t EvenPoly(float128_t x, const float128_t *arr, int n, struct softfloat_status_t *status);
+float128_t OddPoly(float128_t x, const float128_t *arr, int n, struct float_status_t *status);
+#endif // __cplusplus
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _POLY_H_