require_either_extension('D', EXT_ZDINX);
require_fp;
bool greater = f64_lt_quiet(FRS2_D, FRS1_D) ||
              (f64_eq(FRS2_D, FRS1_D) && (FRS2_D.v & F64_SIGN));
if (isNaNF64UI(FRS1_D.v) && isNaNF64UI(FRS2_D.v))
  WRITE_FRD_D(f64(defaultNaNF64UI));
else
  WRITE_FRD_D((greater || isNaNF64UI(FRS2_D.v) ? FRS1_D : FRS2_D));
set_fp_exceptions;