VIRTUAL SV* newSViv _((IV i));
VIRTUAL SV* newSVnv _((double n));
VIRTUAL SV* newSVpv _((char* s, STRLEN len));
+VIRTUAL SV* newSVpvn _((char *s, STRLEN len));
VIRTUAL SV* newSVpvf _((const char* pat, ...));
VIRTUAL SV* newSVrv _((SV* rv, char* classname));
VIRTUAL SV* newSVsv _((SV* old));
void sv_unglob _((SV* sv));
void sv_check_thinkfirst _((SV *sv));
-SV *newSVpvn _((char *s, STRLEN len));
void sv_catpv_mg _((SV *sv, char *ptr));
void sv_catpvf_mg _((SV *sv, const char* pat, ...));