| /* Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Bruno Haible <haible@clisp.cons.org>, 2000. |
| |
| The GNU C 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 C 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 C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdint.h> |
| |
| /* Lookup in a table of int32_t, with default value 0. */ |
| int32_t |
| __collidx_table_lookup (const char *table, uint32_t wc) |
| { |
| uint32_t shift1 = ((const uint32_t *) table)[0]; |
| uint32_t index1 = wc >> shift1; |
| uint32_t bound = ((const uint32_t *) table)[1]; |
| if (index1 < bound) |
| { |
| uint32_t lookup1 = ((const uint32_t *) table)[5 + index1]; |
| if (lookup1 != 0) |
| { |
| uint32_t shift2 = ((const uint32_t *) table)[2]; |
| uint32_t mask2 = ((const uint32_t *) table)[3]; |
| uint32_t index2 = (wc >> shift2) & mask2; |
| uint32_t lookup2 = ((const uint32_t *)(table + lookup1))[index2]; |
| if (lookup2 != 0) |
| { |
| uint32_t mask3 = ((const uint32_t *) table)[4]; |
| uint32_t index3 = wc & mask3; |
| int32_t lookup3 = ((const int32_t *)(table + lookup2))[index3]; |
| |
| return lookup3; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| |
| /* Lookup in a table of uint32_t, with default value 0xffffffff. */ |
| uint32_t |
| __collseq_table_lookup (const char *table, uint32_t wc) |
| { |
| uint32_t shift1 = ((const uint32_t *) table)[0]; |
| uint32_t index1 = wc >> shift1; |
| uint32_t bound = ((const uint32_t *) table)[1]; |
| if (index1 < bound) |
| { |
| uint32_t lookup1 = ((const uint32_t *) table)[5 + index1]; |
| if (lookup1 != 0) |
| { |
| uint32_t shift2 = ((const uint32_t *) table)[2]; |
| uint32_t mask2 = ((const uint32_t *) table)[3]; |
| uint32_t index2 = (wc >> shift2) & mask2; |
| uint32_t lookup2 = ((const uint32_t *)(table + lookup1))[index2]; |
| if (lookup2 != 0) |
| { |
| uint32_t mask3 = ((const uint32_t *) table)[4]; |
| uint32_t index3 = wc & mask3; |
| uint32_t lookup3 = ((const uint32_t *)(table + lookup2))[index3]; |
| |
| return lookup3; |
| } |
| } |
| } |
| return ~((uint32_t) 0); |
| } |