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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [intrinsics/] [string_intrinsics.c] - Blame information for rev 733

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1 733 jeremybenn
/* String intrinsics helper functions.
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   Copyright 2008, 2009 Free Software Foundation, Inc.
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This file is part of the GNU Fortran runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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<http://www.gnu.org/licenses/>.  */
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/* Unlike what the name of this file suggests, we don't actually
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   implement the Fortran intrinsics here.  At least, not with the
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   names they have in the standard.  The functions here provide all
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   the support we need for the standard string intrinsics, and the
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   compiler translates the actual intrinsics calls to calls to
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   functions in this file.  */
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#include "libgfortran.h"
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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/* Helper function to set parts of wide strings to a constant (usually
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   spaces).  */
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static gfc_char4_t *
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memset_char4 (gfc_char4_t *b, gfc_char4_t c, size_t len)
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{
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  size_t i;
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  for (i = 0; i < len; i++)
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    b[i] = c;
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  return b;
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}
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/* Compare wide character types, which are handled internally as
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   unsigned 4-byte integers.  */
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int
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memcmp_char4 (const void *a, const void *b, size_t len)
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{
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  const GFC_UINTEGER_4 *pa = a;
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  const GFC_UINTEGER_4 *pb = b;
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  while (len-- > 0)
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    {
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      if (*pa != *pb)
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        return *pa < *pb ? -1 : 1;
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      pa ++;
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      pb ++;
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    }
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  return 0;
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}
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/* All other functions are defined using a few generic macros in
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   string_intrinsics_inc.c, so we avoid code duplication between the
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   various character type kinds.  */
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#undef  CHARTYPE
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#define CHARTYPE char
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#undef  UCHARTYPE
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#define UCHARTYPE unsigned char
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#undef  SUFFIX
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#define SUFFIX(x) x
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#undef  MEMSET
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#define MEMSET memset
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#undef  MEMCMP
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#define MEMCMP memcmp
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#include "string_intrinsics_inc.c"
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#undef  CHARTYPE
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#define CHARTYPE gfc_char4_t
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#undef  UCHARTYPE
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#define UCHARTYPE gfc_char4_t
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#undef  SUFFIX
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#define SUFFIX(x) x ## _char4
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#undef  MEMSET
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#define MEMSET memset_char4
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#undef  MEMCMP
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#define MEMCMP memcmp_char4
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#include "string_intrinsics_inc.c"
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