1 files changed, 23 insertions, 0 deletions
diff --git a/math/w_exp2_compat.c b/math/w_exp2_compat.c
new file mode 100644
index 0000000000..ca17f9ea63
--- /dev/null
+++ b/math/w_exp2_compat.c
@@ -0,0 +1,23 @@
+/*
+ * wrapper exp2(x)
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+double
+__exp2 (double x)
+{
+  double z = __ieee754_exp2 (x);
+  if (__builtin_expect (!isfinite (z) || z == 0, 0)
+      && isfinite (x) && _LIB_VERSION != _IEEE_)
+    /* exp2 overflow: 44, exp2 underflow: 45 */
+    return __kernel_standard (x, x, 44 + !!signbit (x));
+
+  return z;
+}
+weak_alias (__exp2, exp2)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__exp2, __exp2l)
+weak_alias (__exp2, exp2l)
+#endif