| /* |

| * Copyright (C) 1999-2000, 2016 Free Software Foundation, Inc. |

| * This file is part of the GNU LIBICONV Library. |

| * |

| * The GNU LIBICONV Library is free software; you can redistribute it |

| * and/or modify it under the terms of the GNU Lesser General Public |

| * License as published by the Free Software Foundation; either version 2.1 |

| * of the License, or (at your option) any later version. |

| * |

| * The GNU LIBICONV Library is distributed in the hope that it will be |

| * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |

| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |

| * Lesser General Public License for more details. |

| * |

| * You should have received a copy of the GNU Lesser General Public |

| * License along with the GNU LIBICONV Library; see the file COPYING.LIB. |

| * If not, see <https://www.gnu.org/licenses/>. |

| */ |

| |

| /* |

| * UCS-4-SWAPPED = UCS-4-INTERNAL with inverted endianness |

| */ |

| |

| static int |

| ucs4swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n) |

| { |

| /* This function assumes that 'unsigned int' has exactly 32 bits. */ |

| if (sizeof(unsigned int) != 4) abort(); |

| |

| if (n >= 4) { |

| unsigned int x = *(const unsigned int *)s; |

| x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |

| *pwc = x; |

| return 4; |

| } |

| return RET_TOOFEW(0); |

| } |

| |

| static int |

| ucs4swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n) |

| { |

| /* This function assumes that 'unsigned int' has exactly 32 bits. */ |

| if (sizeof(unsigned int) != 4) abort(); |

| |

| if (n >= 4) { |

| unsigned int x = wc; |

| x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |

| *(unsigned int *)r = x; |

| return 4; |

| } else |

| return RET_TOOSMALL; |

| } |