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diff --git a/silx/math/include/math_compatibility.h b/silx/math/include/math_compatibility.h
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+# /*##########################################################################
+#
+# Copyright (c) 2017-2018 European Synchrotron Radiation Facility
+#
+# 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.
+#
+# ###########################################################################*/
+/* This header provides libc math functions and macros across platforms.
+
+   Needed as VisualStudio 2008 (i.e., Python2.7) is missing some functions/macros.
+*/
+
+#ifndef __MATH_COMPATIBILITY_H__
+#define __MATH_COMPATIBILITY_H__
+
+#include <math.h>
+
+#ifndef INFINITY
+#define INFINITY (DBL_MAX+DBL_MAX)
+#endif
+
+#ifndef NAN
+#define NAN (INFINITY-INFINITY)
+#endif
+
+#if (defined (_MSC_VER) && _MSC_VER < 1800)
+#include <float.h>
+
+/* Make sure asinh returns -inf rather than NaN for v=-inf */
+#define asinh(v) (v == -INFINITY ? v : log((v) + sqrt((v)*(v) + 1)))
+
+#define isnan(v) _isnan(v)
+#define isfinite(v) _finite(v)
+#define lrint(v) ((long int) (v))
+#endif
+
+#endif /*__MATH_COMPATIBILITY_H__*/