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143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/*
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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#include <SDL3/SDL.h>
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#include <SDL3/SDL_main.h>
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#include <SDL3/SDL_test.h>
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static int a_global_var = 77;
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static int SDLCALL
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num_compare(const void *_a, const void *_b)
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{
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const int a = *((const int *)_a);
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const int b = *((const int *)_b);
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return (a < b) ? -1 : ((a > b) ? 1 : 0);
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}
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static int SDLCALL
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num_compare_r(void *userdata, const void *a, const void *b)
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{
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if (userdata != &a_global_var) {
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SDL_Log("Uhoh, invalid userdata during qsort!");
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}
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return num_compare(a, b);
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}
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static void
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test_sort(const char *desc, int *nums, const int arraylen)
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{
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static int nums_copy[1024 * 100];
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int i;
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int prev;
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SDL_assert(SDL_arraysize(nums_copy) >= arraylen);
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SDL_Log("test: %s arraylen=%d", desc, arraylen);
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SDL_memcpy(nums_copy, nums, arraylen * sizeof (*nums));
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SDL_qsort(nums, arraylen, sizeof(nums[0]), num_compare);
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SDL_qsort_r(nums_copy, arraylen, sizeof(nums[0]), num_compare_r, &a_global_var);
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prev = nums[0];
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for (i = 1; i < arraylen; i++) {
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const int val = nums[i];
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const int val2 = nums_copy[i];
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if ((val < prev) || (val != val2)) {
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SDL_Log("sort is broken!");
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return;
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}
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prev = val;
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}
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}
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int main(int argc, char *argv[])
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{
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static int nums[1024 * 100];
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static const int itervals[] = { SDL_arraysize(nums), 12 };
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int i;
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int iteration;
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SDLTest_CommonState *state;
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Uint64 seed = 0;
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int seed_seen = 0;
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/* Initialize test framework */
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state = SDLTest_CommonCreateState(argv, 0);
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if (!state) {
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return 1;
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}
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/* Parse commandline */
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for (i = 1; i < argc;) {
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int consumed;
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consumed = SDLTest_CommonArg(state, i);
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if (!consumed) {
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if (!seed_seen) {
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char *endptr = NULL;
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seed = (Uint64)SDL_strtoull(argv[i], &endptr, 0);
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if (endptr != argv[i] && *endptr == '\0') {
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seed_seen = 1;
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consumed = 1;
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} else {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Invalid seed. Use a decimal or hexadecimal number.\n");
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return 1;
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}
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}
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}
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if (consumed <= 0) {
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static const char *options[] = { "[seed]", NULL };
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SDLTest_CommonLogUsage(state, argv[0], options);
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return 1;
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}
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i += consumed;
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}
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if (!seed_seen) {
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seed = SDL_GetPerformanceCounter();
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}
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SDL_Log("Using random seed 0x%" SDL_PRIx64 "\n", seed);
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for (iteration = 0; iteration < SDL_arraysize(itervals); iteration++) {
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const int arraylen = itervals[iteration];
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for (i = 0; i < arraylen; i++) {
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nums[i] = i;
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}
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test_sort("already sorted", nums, arraylen);
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for (i = 0; i < arraylen; i++) {
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nums[i] = i;
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}
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nums[arraylen - 1] = -1;
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test_sort("already sorted except last element", nums, arraylen);
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for (i = 0; i < arraylen; i++) {
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nums[i] = (arraylen - 1) - i;
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}
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test_sort("reverse sorted", nums, arraylen);
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for (i = 0; i < arraylen; i++) {
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nums[i] = SDL_rand_r(&seed, 1000000);
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}
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test_sort("random sorted", nums, arraylen);
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}
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SDL_Quit();
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SDLTest_CommonDestroyState(state);
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return 0;
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}
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