fix diffasserterror in uint256 integration test (#495)

fix diffasserterror in uint256 integration test

src/hint_processor/uint256_utils.zig

@@ -355,12 +355,13 @@ pub fn uint256OffsetedUnsignedDivRem(
     // TODO: optimize use biguint instead of u512
     const a_shifted = (@as(u512, a_high.toInteger()) << 128) + @as(u512, a_low.toInteger());
     const div = (@as(u512, div_high.toInteger()) << 128) + @as(u512, div_low.toInteger());
+
     //a and div will always be positive numbers
     //Then, Rust div_rem equals Python divmod
     const quotient_remainder = try helper.divRem(u512, a_shifted, div);
 
-    const quotient = Uint256.fromFelt(Felt252.fromInt(u512, quotient_remainder[0]));
-    const remainder = Uint256.fromFelt(Felt252.fromInt(u512, quotient_remainder[1]));
+    const quotient = Uint256.split(u512, quotient_remainder[0]);
+    const remainder = Uint256.split(u512, quotient_remainder[1]);
 
     try quotient.insertFromVarName(allocator, "quotient", vm, ids_data, ap_tracking);
     try remainder.insertFromVarName(allocator, "remainder", vm, ids_data, ap_tracking);

src/integration_tests.zig

@@ -215,8 +215,7 @@ pub fn main() void {
         //TODO: hint uint384 not implemented
         // .{ .pathname = "cairo_programs/uint256_improvements.json", .layout = "all_cairo" },
         .{ .pathname = "cairo_programs/uint256_integration_tests.json", .layout = "all_cairo" },
-        // TODO: fix DiffAssertValues
-        // .{ .pathname = "cairo_programs/uint256.json", .layout = "all_cairo" },
+        .{ .pathname = "cairo_programs/uint256.json", .layout = "all_cairo" },
 
         // .{ .pathname = "cairo_programs/uint384_extension_test.json", .layout = "all_cairo" },
         // .{ .pathname = "cairo_programs/uint384_extension.json", .layout = "all_cairo" },

src/math/fields/fields.zig

@@ -81,6 +81,10 @@ pub fn Field(comptime F: type, comptime modulo: u256) type {
 
         fe: F.MontgomeryDomainFieldElement,
 
+        pub fn format(self: Self, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
+            return std.fmt.format(writer, "Felt({any})", .{self.toInteger()});
+        }
+
         /// Mask to apply to the highest limb to get the correct number of bits.
         pub fn mask(bits: usize) u64 {
             return switch (bits) {