1 files changed, 41 insertions, 0 deletions
diff --git a/math/w_exp_compat.c b/math/w_exp_compat.c
new file mode 100644
index 0000000000..98aa5b76a0
--- /dev/null
+++ b/math/w_exp_compat.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
+
+   The GNU C 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.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <math-svid-compat.h>
+
+#if LIBM_SVID_COMPAT
+/* wrapper exp */
+double
+__exp (double x)
+{
+  double z = __ieee754_exp (x);
+  if (__builtin_expect (!isfinite (z) || z == 0, 0)
+      && isfinite (x) && _LIB_VERSION != _IEEE_)
+    return __kernel_standard (x, x, 6 + !!signbit (x));
+
+  return z;
+}
+hidden_def (__exp)
+weak_alias (__exp, exp)
+# ifdef NO_LONG_DOUBLE
+strong_alias (__exp, __expl)
+weak_alias (__exp, expl)
+# endif
+#endif