1 files changed, 24 insertions, 0 deletions
diff --git a/libm/w_exp2l.c b/libm/w_exp2l.c
new file mode 100644
index 000000000..ebf410daa
--- /dev/null
+++ b/libm/w_exp2l.c
@@ -0,0 +1,24 @@
+/*
+ * wrapper exp2l(x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+#if !defined __NO_LONG_DOUBLE_MATH
+long double
+exp2l (long double x)
+{
+# if __UCLIBC_HAS_FENV__
+  long double z = (long double) pow(2.0, (double) x);
+  if (__builtin_expect (!isfinite (z) || z == 0, 0)
+      && isfinite (x) && _LIB_VERSION != _IEEE_)
+    /* exp2 overflow: 244, exp2 underflow: 245 */
+    return __kernel_standard_l (x, x, 244 + !!signbit (x));
+
+  return z;
+# else
+  return (long double) pow(2.0, (double) x);
+# endif /* __UCLIBC_HAS_FENV__ */
+}
+#endif /* __NO_LONG_DOUBLE_MATH */