Add big endian precompiled structs for 16 & 32 uints

electrumx/lib/util.py

@@ -335,6 +335,8 @@ struct_le_q = Struct('<q')
 struct_le_H = Struct('<H')
 struct_le_I = Struct('<I')
 struct_le_Q = Struct('<Q')
+struct_be_H = Struct('>H')
+struct_be_I = Struct('>I')
 structB = Struct('B')
 
 unpack_le_int32_from = struct_le_i.unpack_from
@@ -342,12 +344,16 @@ unpack_le_int64_from = struct_le_q.unpack_from
 unpack_le_uint16_from = struct_le_H.unpack_from
 unpack_le_uint32_from = struct_le_I.unpack_from
 unpack_le_uint64_from = struct_le_Q.unpack_from
+unpack_be_uint16_from = struct_be_H.unpack_from
+unpack_be_uint32_from = struct_be_I.unpack_from
 
 pack_le_int32 = struct_le_i.pack
 pack_le_int64 = struct_le_q.pack
 pack_le_uint16 = struct_le_H.pack
 pack_le_uint32 = struct_le_I.pack
 pack_le_uint64 = struct_le_Q.pack
+pack_be_uint16 = struct_be_H.pack
+pack_be_uint32 = struct_be_I.pack
 pack_byte = structB.pack
 
 hex_to_bytes = bytes.fromhex