toolchain/gcc/newlib/libc/string/index.c

   1 /*
   2 FUNCTION
   3         <<index>>---search for character in string
   4
   5 INDEX
   6         index
   7
   8 ANSI_SYNOPSIS
   9         #include <string.h>
  10         char * index(const char *<[string]>, int <[c]>);
  11
  12 TRAD_SYNOPSIS
  13         #include <string.h>
  14         char * index(<[string]>, <[c]>);
  15         char *<[string]>;
  16         int *<[c]>;
  17
  18 DESCRIPTION
  19         This function finds the first occurence of <[c]> (converted to
  20         a char) in the string pointed to by <[string]> (including the
  21         terminating null character).
  22
  23         This function is identical to <<strchr>>.
  24
  25 RETURNS
  26         Returns a pointer to the located character, or a null pointer
  27         if <[c]> does not occur in <[string]>.
  28
  29 PORTABILITY
  30 <<index>> requires no supporting OS subroutines.
  31
  32 QUICKREF
  33         index - pure
  34 */
  35
  36 #include <string.h>
  37
  38 char *
  39 _DEFUN (index, (s, c),
  40         _CONST char *s _AND
  41         int c)
  42 {
  43   return strchr (s, c);
  44 }