1 files changed, 28 insertions, 0 deletions
diff --git a/math/w_log2l.c b/math/w_log2l.c
new file mode 100644
index 0000000000..b1d8706f2a
--- /dev/null
+++ b/math/w_log2l.c
@@ -0,0 +1,28 @@
+/*
+ * wrapper log2l(X)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+long double
+__log2l (long double x)	/* wrapper log2l */
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_log2l (x);
+#else
+  long double z;
+  z = __ieee754_log2l (x);
+  if (_LIB_VERSION == _IEEE_ || __isnanl (x)) return z;
+  if (x <= 0.0)
+    {
+      if (x == 0.0)
+	return __kernel_standard (x, x, 248); /* log2l (0) */
+      else
+	return __kernel_standard (x, x, 249); /* log2l (x < 0) */
+    }
+  else
+    return z;
+#endif
+}
+weak_alias (__log2l, log2l)