src/ctype/isalpha.c

   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);