if (SvTYPE(hv) == SVt_PVHV) {
		if (hv_exists_ent(hv, tmpsv, 0))
			RETPUSHYES;
    }

##</code><code>##

    entry = ((HE**)xhv->xhv_array)[hash & (I32) xhv->xhv_max];
    for (; entry; entry = HeNEXT(entry)) {
		if (HeHASH(entry) != hash)		/* strings can't be equal */ continue;
		if (HeKLEN(entry) != klen) continue;
*		if (memNE(HeKEY(entry),key,klen))	/* is this it? */ 
*		continue;
*		return TRUE;
    }

##</code><code>##

pp.h:#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
pp.h:#define RETURNX(x) return x, PUTBACK, NORMAL
pp.h:#define PUSHs(s)   (*++sp = (s))
perlapi.h:#define PL_sv_yes             (*Perl_Isv_yes_ptr(aTHXo))

pp.h:#define NORMAL PL_op->op_next
pp.h:#define PUTBACK            PL_stack_sp = sp

##</code><code>##

return ( *++sp = ( &( *Perl_Isv_yes_ptr( aTHXo ) ) ) )
	, PL_stack_sp = sp
	, PL_op->op_next;

##</code><code>##

    if (SvTYPE(hv) == SVt_PVHV) {
                SV* sv;
		if (sv = hv_exists_ent(hv, tmpsv, 0))
			RETURNX(sv);
    }