SvIOK_only_UV # U
SvNV # E
SvNVX # E
+SvNV_set # E
SvNVx # E
SvPOK_only_UTF8 # U
SvPV_nolen # E
newSVsv # E (Perl_newSVsv)
newSVuv # E
newUNOP # E (Perl_newUNOP)
-newWHILEOP # E (Perl_newWHILEOP)
newXS # E (Perl_newXS)
newXSproto # E
new_collate # E (perl_new_collate)