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Diffstat (limited to 'include/stc/algo/csort.h')
| -rw-r--r-- | include/stc/algo/csort.h | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/include/stc/algo/csort.h b/include/stc/algo/csort.h deleted file mode 100644 index 53fe9fcc..00000000 --- a/include/stc/algo/csort.h +++ /dev/null @@ -1,89 +0,0 @@ -/* MIT License - * - * Copyright (c) 2023 Tyge Løvset - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include "../ccommon.h" -#include "../priv/template.h" - -/* Generic Quicksort in C, performs as fast as c++ std::sort(). -template params: -#define i_val - value type [required] -#define i_less - less function. default: *x < *y -#define i_tag NAME - define csort_NAME(). default {i_val} - -// test: -#include <stdio.h> -#define i_val int -#include <stc/algo/csort.h> - -int main() { - int arr[] = {23, 321, 5434, 25, 245, 1, 654, 33, 543, 21}; - - csort_int(arr, c_arraylen(arr)); - - for (int i = 0; i < c_arraylen(arr); i++) - printf(" %d", arr[i]); - puts(""); -} -*/ - -typedef i_val c_PASTE(c_CONCAT(csort_, i_tag), _value); - -static inline void c_PASTE(cisort_, i_tag)(i_val arr[], intptr_t lo, intptr_t hi) { - for (intptr_t j = lo, i = lo + 1; i <= hi; j = i, ++i) { - i_val key = arr[i]; - while (j >= 0 && (i_less((&key), (&arr[j])))) { - arr[j + 1] = arr[j]; - --j; - } - arr[j + 1] = key; - } -} - -static inline void c_PASTE(cqsort_, i_tag)(i_val arr[], intptr_t lo, intptr_t hi) { - intptr_t i = lo, j; - while (lo < hi) { - i_val pivot = arr[lo + (hi - lo)*7/16]; - j = hi; - - while (i <= j) { - while (i_less((&arr[i]), (&pivot))) ++i; - while (i_less((&pivot), (&arr[j]))) --j; - if (i <= j) { - c_swap(i_val, arr+i, arr+j); - ++i; --j; - } - } - if (j - lo > hi - i) { - c_swap(intptr_t, &lo, &i); - c_swap(intptr_t, &hi, &j); - } - - if (j - lo > 64) c_PASTE(cqsort_, i_tag)(arr, lo, j); - else if (j > lo) c_PASTE(cisort_, i_tag)(arr, lo, j); - lo = i; - } -} - -static inline void c_PASTE(csort_, i_tag)(i_val arr[], intptr_t n) - { c_PASTE(cqsort_, i_tag)(arr, 0, n - 1); } - -#include "../priv/template2.h" |
