feat: casting the results of the lane function by preserving the bits

instead of letting C++ do it (and potentially change the bits)

Author: madhav-madhusoodanan

crates/intrinsic-test/src/x86/types.rs

@@ -201,7 +201,7 @@ impl IntrinsicTypeDefinition for X86IntrinsicType {
             (0..self.num_lanes())
                 .map(|idx| -> std::string::String {
                     format!(
-                        "{cast}{lane_fn}(__return_value, {lane})",
+                        "cast<{cast}>({lane_fn}(__return_value, {lane}))",
                         cast = self.c_promotion(),
                         lane_fn = self.get_lane_function(),
                         lane = idx