add xdp formats

Author: perazz

src/stdlib_linalg_state.fypp

@@ -9,7 +9,7 @@ module stdlib_linalg_state
      use stdlib_linalg_constants,only: ilp,sp,dp,qp,lk
      use stdlib_kinds, only: int8, int16, int32, int64
      use stdlib_io, only: FMT_REAL_SP, FMT_REAL_DP, FMT_REAL_QP, FMT_COMPLEX_SP, FMT_COMPLEX_DP, &
-         FMT_COMPLEX_QP
+         FMT_COMPLEX_QP, FMT_REAL_XDP, FMT_COMPLEX_XDP
      implicit none(type,external)
      private