+bool greater = f64_lt_quiet(f64(FRS2), f64(FRS1)) ||
+ (f64_eq(f64(FRS2), f64(FRS1)) && (f64(FRS2).v & F64_SIGN));
+if (isNaNF64UI(f64(FRS1).v) && isNaNF64UI(f64(FRS2).v))
+ WRITE_FRD(f64(defaultNaNF64UI));
+else
+ WRITE_FRD(greater || isNaNF64UI(f64(FRS2).v) ? FRS1 : FRS2);