py/obj: Add functions to retrieve large integers from mp_obj_t.

This commit provides helpers to retrieve integer values from
mp_obj_t when the content does not fit in a 32 bits integer,
without risking an implicit wrap due to an int overflow.

Signed-off-by: Yoctopuce dev <dev@yoctopuce.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/ports/unix/extra_coverage.py b/tests/ports/unix/extra_coverage.py
index ec68a5550..72f5fe56b 100644
--- a/tests/ports/unix/extra_coverage.py
+++ b/tests/ports/unix/extra_coverage.py
@@ -6,6 +6,16 @@ except NameError:
 
 import errno
 import io
+import uctypes
+
+# create an int-like variable used for coverage of `mp_obj_get_ll`
+buf = bytearray(b"\xde\xad\xbe\xef")
+struct = uctypes.struct(
+    uctypes.addressof(buf),
+    {"f32": uctypes.UINT32 | 0},
+    uctypes.BIG_ENDIAN,
+)
+deadbeef = struct.f32
 
 data = extra_coverage()