Add a rule for dnrm2 in complex to other precision

modules/precision_generator/subs.py

@@ -628,6 +628,7 @@ subs = {
     ('', 'sger',           'dger',           'cgerc',          'zgerc'           ),
     ('', 'sger',           'dger',           'cgeru',          'zgeru'           ),
     ('', 'snrm2',          'dnrm2',          'scnrm2',         'dznrm2'          ),
+    ('', 'snrm2',          'dnrm2',          'snrm2',          'dnrm2'           ),
     ('', 'ssymm',          'dsymm',          'chemm',          'zhemm'           ),
     ('', 'ssymv',          'dsymv',          'chemv',          'zhemv'           ),
     ('', 'ssyr2',          'dsyr2',          'cher2',          'zher2'           ),