BUG: fix device compat (#63)

Author: lucascolley

Diff for: src/array_api_extra/_funcs.py

@@ -1,6 +1,6 @@
 import warnings
 
-from ._lib import _utils
+from ._lib import _compat, _utils
 from ._lib._compat import array_namespace
 from ._lib._typing import Array, ModuleType
 
@@ -200,7 +200,7 @@ def create_diagonal(
         err_msg = "`x` must be 1-dimensional."
         raise ValueError(err_msg)
     n = x.shape[0] + abs(offset)
-    diag = xp.zeros(n**2, dtype=x.dtype, device=x.device)
+    diag = xp.zeros(n**2, dtype=x.dtype, device=_compat.device(x))
     i = offset if offset >= 0 else abs(offset) * n
     diag[i : min(n * (n - offset), diag.shape[0]) : n + 1] = x
     return xp.reshape(diag, (n, n))
@@ -540,6 +540,6 @@ def sinc(x: Array, /, *, xp: ModuleType | None = None) -> Array:
     y = xp.pi * xp.where(
         xp.astype(x, xp.bool),
         x,
-        xp.asarray(xp.finfo(x.dtype).eps, dtype=x.dtype, device=x.device),
+        xp.asarray(xp.finfo(x.dtype).eps, dtype=x.dtype, device=_compat.device(x)),
     )
     return xp.sin(y) / y