isalpha.c raw

   1  #include <ctype.h>
   2  #undef isalpha
   3  
   4  int isalpha(int c)
   5  {
   6  	return ((unsigned)c|32)-'a' < 26;
   7  }
   8  
   9  int __isalpha_l(int c, locale_t l)
  10  {
  11  	return isalpha(c);
  12  }
  13  
  14  weak_alias(__isalpha_l, isalpha_l);
  15