diff --git a/core/variant/variant_parser.cpp b/core/variant/variant_parser.cpp
index 50c48fd386..a214a238a6 100644
--- a/core/variant/variant_parser.cpp
+++ b/core/variant/variant_parser.cpp
@@ -1423,7 +1423,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
 			p_store_string_func(p_store_string_ud, itos(p_variant.operator int64_t()));
 		} break;
 		case Variant::FLOAT: {
-			String s = rtosfix(p_variant.operator real_t());
+			String s = rtosfix(p_variant.operator double());
 			if (s != "inf" && s != "nan") {
 				if (s.find(".") == -1 && s.find("e") == -1) {
 					s += ".0";
diff --git a/editor/plugins/node_3d_editor_gizmos.cpp b/editor/plugins/node_3d_editor_gizmos.cpp
index b93e12d7fa..38510ff81e 100644
--- a/editor/plugins/node_3d_editor_gizmos.cpp
+++ b/editor/plugins/node_3d_editor_gizmos.cpp
@@ -2104,7 +2104,7 @@ void Skeleton3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
 	grests.resize(skel->get_bone_count());
 
 	LocalVector<int> bones;
-	LocalVector<real_t> weights;
+	LocalVector<float> weights;
 	bones.resize(4);
 	weights.resize(4);
 
diff --git a/tests/test_geometry_3d.h b/tests/test_geometry_3d.h
index 2b2a424b2b..40cb8bc07a 100644
--- a/tests/test_geometry_3d.h
+++ b/tests/test_geometry_3d.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef TEST_3D_GEOMETRY_H
-#define TEST_3D_GEOMETRY_H
+#ifndef TEST_GEOMETRY_3D_H
+#define TEST_GEOMETRY_3D_H
 
 #include "core/math/geometry_3d.h"
 #include "core/math/plane.h"
@@ -38,7 +38,7 @@
 #include "tests/test_macros.h"
 #include "vector"
 
-namespace Test3DGeometry {
+namespace TestGeometry3D {
 TEST_CASE("[Geometry3D] Closest Points Between Segments") {
 	struct Case {
 		Vector3 p_1, p_2, p_3, p_4;
@@ -57,6 +57,7 @@ TEST_CASE("[Geometry3D] Closest Points Between Segments") {
 		CHECK(current_case.got_2.is_equal_approx(current_case.want_2));
 	}
 }
+
 TEST_CASE("[Geometry3D] Closest Distance Between Segments") {
 	struct Case {
 		Vector3 p_1, p_2, p_3, p_4;
@@ -73,6 +74,7 @@ TEST_CASE("[Geometry3D] Closest Distance Between Segments") {
 		CHECK(out == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Build Box Planes") {
 	const Vector3 extents = Vector3(5, 5, 20);
 	Vector<Plane> box = Geometry3D::build_box_planes(extents);
@@ -90,6 +92,7 @@ TEST_CASE("[Geometry3D] Build Box Planes") {
 	CHECK(extents.z == box[5].d);
 	CHECK(box[5].normal == Vector3(0, 0, -1));
 }
+
 TEST_CASE("[Geometry3D] Build Capsule Planes") {
 	struct Case {
 		real_t radius, height;
@@ -109,6 +112,7 @@ TEST_CASE("[Geometry3D] Build Capsule Planes") {
 		CHECK(capsule.size() == current_case.want_size);
 	}
 }
+
 TEST_CASE("[Geometry3D] Build Cylinder Planes") {
 	struct Case {
 		real_t radius, height;
@@ -127,6 +131,7 @@ TEST_CASE("[Geometry3D] Build Cylinder Planes") {
 		CHECK(planes.size() == current_case.want_size);
 	}
 }
+
 TEST_CASE("[Geometry3D] Build Sphere Planes") {
 	struct Case {
 		real_t radius;
@@ -145,6 +150,7 @@ TEST_CASE("[Geometry3D] Build Sphere Planes") {
 		CHECK(planes.size() == 63);
 	}
 }
+
 TEST_CASE("[Geometry3D] Build Convex Mesh") {
 	struct Case {
 		Vector<Plane> object;
@@ -166,6 +172,7 @@ TEST_CASE("[Geometry3D] Build Convex Mesh") {
 		CHECK(mesh.vertices.size() == current_case.want_vertices);
 	}
 }
+
 TEST_CASE("[Geometry3D] Clip Polygon") {
 	struct Case {
 		Plane clipping_plane;
@@ -190,6 +197,7 @@ TEST_CASE("[Geometry3D] Clip Polygon") {
 		}
 	}
 }
+
 TEST_CASE("[Geometry3D] Compute Convex Mesh Points") {
 	struct Case {
 		Vector<Plane> mesh;
@@ -215,6 +223,7 @@ TEST_CASE("[Geometry3D] Compute Convex Mesh Points") {
 		CHECK(vectors == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Get Closest Point To Segment") {
 	struct Case {
 		Vector3 point;
@@ -235,6 +244,7 @@ TEST_CASE("[Geometry3D] Get Closest Point To Segment") {
 		CHECK(output.is_equal_approx(current_case.want));
 	}
 }
+
 TEST_CASE("[Geometry3D] Plane and Box Overlap") {
 	struct Case {
 		Vector3 normal, max_box;
@@ -254,6 +264,7 @@ TEST_CASE("[Geometry3D] Plane and Box Overlap") {
 		CHECK(overlap == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Is Point in Projected Triangle") {
 	struct Case {
 		Vector3 point, v_1, v_2, v_3;
@@ -272,6 +283,7 @@ TEST_CASE("[Geometry3D] Is Point in Projected Triangle") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Does Ray Intersect Triangle") {
 	struct Case {
 		Vector3 from, direction, v_1, v_2, v_3;
@@ -291,6 +303,7 @@ TEST_CASE("[Geometry3D] Does Ray Intersect Triangle") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Does Segment Intersect Convex") {
 	struct Case {
 		Vector3 from, to;
@@ -311,6 +324,7 @@ TEST_CASE("[Geometry3D] Does Segment Intersect Convex") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Segment Intersects Cylinder") {
 	struct Case {
 		Vector3 from, to;
@@ -330,6 +344,7 @@ TEST_CASE("[Geometry3D] Segment Intersects Cylinder") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Segment Intersects Cylinder") {
 	struct Case {
 		Vector3 from, to, sphere_pos;
@@ -350,6 +365,7 @@ TEST_CASE("[Geometry3D] Segment Intersects Cylinder") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Segment Intersects Triangle") {
 	struct Case {
 		Vector3 from, to, v_1, v_2, v_3, *result;
@@ -368,6 +384,7 @@ TEST_CASE("[Geometry3D] Segment Intersects Triangle") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Triangle and Box Overlap") {
 	struct Case {
 		Vector3 box_centre;
@@ -389,6 +406,7 @@ TEST_CASE("[Geometry3D] Triangle and Box Overlap") {
 		CHECK(output == current_case.want);
 	}
 }
+
 TEST_CASE("[Geometry3D] Triangle and Sphere Intersect") {
 	struct Case {
 		Vector<Vector3> triangle;
@@ -413,5 +431,6 @@ TEST_CASE("[Geometry3D] Triangle and Sphere Intersect") {
 		CHECK(output == current_case.want);
 	}
 }
-} // namespace Test3DGeometry
-#endif
+} // namespace TestGeometry3D
+
+#endif // TEST_GEOMETRY_3D_H
diff --git a/tests/test_variant.h b/tests/test_variant.h
index dfc72b512c..598fe488d7 100644
--- a/tests/test_variant.h
+++ b/tests/test_variant.h
@@ -39,7 +39,7 @@
 namespace TestVariant {
 
 TEST_CASE("[Variant] Writer and parser integer") {
-	int64_t a32 = 2147483648; // 2^31, so out of bounds for 32-bit signed int [-2^31,-2^31-1].
+	int64_t a32 = 2147483648; // 2^31, so out of bounds for 32-bit signed int [-2^31, +2^31-1].
 	String a32_str;
 	VariantWriter::write_to_string(a32, a32_str);
 
@@ -76,34 +76,35 @@ TEST_CASE("[Variant] Writer and parser integer") {
 	CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "The result should be clamped to max value.");
 }
 
-TEST_CASE("[Variant] Writer and parser float") {
-	// Assuming real_t is double.
-	real_t a64 = 340282346638528859811704183484516925440.0; // std::numeric_limits<real_t>::max()
+TEST_CASE("[Variant] Writer and parser Variant::FLOAT") {
+	// Variant::FLOAT is always 64-bit (C++ double).
+	// This is the maximum non-infinity double-precision float.
+	double a64 = 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.0;
 	String a64_str;
 	VariantWriter::write_to_string(a64, a64_str);
 
-	CHECK_MESSAGE(a64_str == "3.40282e+38", "Writes in scientific notation.");
+	CHECK_MESSAGE(a64_str == "1.79769e+308", "Writes in scientific notation.");
 	CHECK_MESSAGE(a64_str != "inf", "Should not overflow.");
 	CHECK_MESSAGE(a64_str != "nan", "The result should be defined.");
 
-	VariantParser::StreamString ss;
 	String errs;
 	int line;
-	Variant b64_parsed;
-	real_t b64_float_parsed;
+	Variant variant_parsed;
+	double float_parsed;
 
-	ss.s = a64_str;
-	VariantParser::parse(&ss, b64_parsed, errs, line);
-	b64_float_parsed = b64_parsed;
-
-	CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should parse back.");
+	VariantParser::StreamString bss;
+	bss.s = a64_str;
+	VariantParser::parse(&bss, variant_parsed, errs, line);
+	float_parsed = variant_parsed;
 	// Loses precision, but that's alright.
+	CHECK_MESSAGE(float_parsed == 1.79769e+308, "Should parse back.");
 
-	ss.s = "1.0e+100"; // Float version of Googol!
-	VariantParser::parse(&ss, b64_parsed, errs, line);
-	b64_float_parsed = b64_parsed;
-
-	CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should not overflow.");
+	// Approximation of Googol with a double-precision float.
+	VariantParser::StreamString css;
+	css.s = "1.0e+100";
+	VariantParser::parse(&css, variant_parsed, errs, line);
+	float_parsed = variant_parsed;
+	CHECK_MESSAGE(float_parsed == 1.0e+100, "Should match the double literal.");
 }
 
 TEST_CASE("[Variant] Assignment To Bool from Int,Float,String,Vec2,Vec2i,Vec3,Vec3i and Color") {