doubt on traits with memchr and memcmp

[wolverine]

Hi
Is there any problem in the following traits if i
1) use memcmp for compare
2) use memchr for find
3) memset to assign

I am asking this since memset and memchr accepts an "int" as character
to set and search respectively. So if i use them with "unsigned short"
which is my char_type will their be any problem ?

struct char_traits
{
typedef unsigned short char_type;
typedef int int_type;

typedef streampos pos_type;
typedef streamoff off_type;
typedef mbstate_t state_type;

static void assign(char_type& __c1, const char_type& __c2)
{
__c1 = __c2;
}

static bool eq(const char_type& __c1, const char_type& __c2)
{
return __c1 == __c2;
}

static bool lt(const char_type& __c1, const char_type& __c2)
{
return __c1 < __c2;
}

static int compare(const char_type* __s1, const char_type* __s2,
size_t __n)
{
for (size_t __i = 0; __i < __n; ++__i)
if (!eq(__s1[__i], __s2[__i]))
return lt(__s1[__i], __s2[__i]) ? -1 : 1;
return 0;
}

static const char_type* find(const char_type* __s, size_t __n, const
char_type& __a)
{
for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
if (*__p == __a) return __p;
return 0;
}

static char_type* assign(char_type* __s, size_t __n, char_type __a)
{
for (char_type* __p = __s; __p < __s + __n; ++__p)
assign(*__p, __a);
return __s;
}
};

Thanks in advance
Kiran.