SDL/test/testqsort.c
Sam Lantinga b8d85c6939 Update for SDL3 coding style (#6717)
I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.

In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.

The script I ran for the src directory is added as build-scripts/clang-format-src.sh

This fixes:
#6592
#6593
#6594

(cherry picked from commit 5750bcb174300011b91d1de20edb288fcca70f8c)
2022-11-30 12:57:41 -08:00

103 lines
2.8 KiB
C

/*
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
#include "SDL_test.h"
static int SDLCALL
num_compare(const void *_a, const void *_b)
{
const int a = *((const int *)_a);
const int b = *((const int *)_b);
return (a < b) ? -1 : ((a > b) ? 1 : 0);
}
static void
test_sort(const char *desc, int *nums, const int arraylen)
{
int i;
int prev;
SDL_Log("test: %s arraylen=%d", desc, arraylen);
SDL_qsort(nums, arraylen, sizeof(nums[0]), num_compare);
prev = nums[0];
for (i = 1; i < arraylen; i++) {
const int val = nums[i];
if (val < prev) {
SDL_Log("sort is broken!");
return;
}
prev = val;
}
}
int main(int argc, char *argv[])
{
static int nums[1024 * 100];
static const int itervals[] = { SDL_arraysize(nums), 12 };
int iteration;
SDLTest_RandomContext rndctx;
if (argc > 1) {
int success;
Uint64 seed = 0;
if (argv[1][0] == '0' && argv[1][1] == 'x')
success = SDL_sscanf(argv[1] + 2, "%" SDL_PRIx64, &seed);
else
success = SDL_sscanf(argv[1], "%" SDL_PRIu64, &seed);
if (!success) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Invalid seed. Use a decimal or hexadecimal number.\n");
return 1;
}
if (seed <= ((Uint64)0xffffffff)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Seed must be equal or greater than 0x100000000.\n");
return 1;
}
SDLTest_RandomInit(&rndctx, (unsigned int)(seed >> 32), (unsigned int)(seed & 0xffffffff));
} else {
SDLTest_RandomInitTime(&rndctx);
}
SDL_Log("Using random seed 0x%08x%08x\n", rndctx.x, rndctx.c);
for (iteration = 0; iteration < SDL_arraysize(itervals); iteration++) {
const int arraylen = itervals[iteration];
int i;
for (i = 0; i < arraylen; i++) {
nums[i] = i;
}
test_sort("already sorted", nums, arraylen);
for (i = 0; i < arraylen; i++) {
nums[i] = i;
}
nums[arraylen - 1] = -1;
test_sort("already sorted except last element", nums, arraylen);
for (i = 0; i < arraylen; i++) {
nums[i] = (arraylen - 1) - i;
}
test_sort("reverse sorted", nums, arraylen);
for (i = 0; i < arraylen; i++) {
nums[i] = SDLTest_RandomInt(&rndctx);
}
test_sort("random sorted", nums, arraylen);
}
return 0;
}
/* vi: set ts=4 sw=4 expandtab: */