implement Libc; include "libc.m"; islx(c: int): int{	return c >= 'a' && c <= 'f';} isux(c: int): int{	return c >= 'A' && c <= 'F';} isalnum(c: int): int{	return isalpha(c) || isdigit(c);} isalpha(c: int): int{	return islower(c) || isupper(c);} isascii(c: int): int{	return (c&~16r7f) == 0;} iscntrl(c: int): int{	return c == 16r7f || (c&~16r1f) == 0;} isdigit(c: int): int{	return c >= '0' && c <= '9';} isgraph(c: int): int{	return c >= '!' && c <= '~';} islower(c: int): int{	return c >= 'a' && c <= 'z';} isprint(c: int): int{	return c >= ' ' && c <= '~';} ispunct(c: int): int{	return isascii(c) && !iscntrl(c) && !isspace(c) && !isalnum(c);} isspace(c: int): int{	return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v';} isupper(c: int): int{	return c >= 'A' && c <= 'Z';} isxdigit(c: int): int{	return isdigit(c) || islx(c) || isux(c);} tolower(c: int): int{	if(isupper(c))		return c+'a'-'A';	return c;} toupper(c: int): int{	if(islower(c))		return c+'A'-'a';	return c;} toascii(c: int): int{	return c&16r7f;} strchr(s: string, n: int): int{	l := len s;	for(i := 0; i < l; i++)		if(s[i] == n)			return i;	return -1;} strrchr(s: string, n: int): int{	l := len s;	for(i := l-1; i >= 0; i--)		if(s[i] == n)			return i;	return -1;} strncmp(s1: string, s2: string, n: int): int{	l1 := len s1;	l2 := len s2;	m := n;	if(m > l1)		m = l1;	if(m > l2)		m = l2;	for(i := 0; i < m; i++)		if(s1[i] != s2[i])			return s1[i]-s2[i];	if(i == n)		return 0;	return l1-l2;} abs(n: int): int{	if(n < 0)		return -n;	return n;} min(m: int, n: int): int{	if(m < n)		return m;	return n;} max(m: int, n: int): int{	if(m > n)		return m;	return n;}