Add a "fork" of musl as //fusl.

fusl/src/complex/cpowl.c

Index: fusl/src/complex/cpowl.c
diff --git a/fusl/src/complex/cpowl.c b/fusl/src/complex/cpowl.c
new file mode 100644
index 0000000000000000000000000000000000000000..c1a80a7b255bdedf712a067fe3eebcaedf96b78d
--- /dev/null
+++ b/fusl/src/complex/cpowl.c
@@ -0,0 +1,13 @@
+#include "libm.h"
+
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+long double complex cpowl(long double complex z, long double complex c)
+{
+	return cpow(z, c);
+}
+#else
+long double complex cpowl(long double complex z, long double complex c)
+{
+	return cexpl(c * clogl(z));
+}
+#endif