4 toupperw, tolowerw - convert strings to uppercase or lowercase
10 char * toupperw(char *);
11 char * tolowerw(char *);
15 Like ctype.h's toupper() and tolower(), except that it can take full strings
16 instead of just single characters.
19 A pointer to the converted string. This string is allocated with calloc(3), so
20 be sure to free(3) it!
23 toupper(3), tolower(3)