arch/xtensa/lib/strcasecmp.c

   1 /*
   2  *  linux/arch/xtensa/lib/strcasecmp.c
   3  *
   4  *  This file is subject to the terms and conditions of the GNU General
   5  *  Public License.  See the file "COPYING" in the main directory of
   6  *  this archive for more details.
   7  *
   8  *  Copyright (C) 2002 Tensilica Inc.
   9  */
  10
  11 #include <linux/string.h>
  12
  13
  14 /* We handle nothing here except the C locale.  Since this is used in
  15    only one place, on strings known to contain only 7 bit ASCII, this
  16    is ok.  */
  17
  18 int strcasecmp(const char *a, const char *b)
  19 {
  20         int ca, cb;
  21
  22         do {
  23                 ca = *a++ & 0xff;
  24                 cb = *b++ & 0xff;
  25                 if (ca >= 'A' && ca <= 'Z')
  26                         ca += 'a' - 'A';
  27                 if (cb >= 'A' && cb <= 'Z')
  28                         cb += 'a' - 'A';
  29         } while (ca == cb && ca != '\0');
  30
  31         return ca - cb;
  32 }