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105 lines
2.3 KiB
105 lines
2.3 KiB
/*
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* strncmp test.
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "stringlib.h"
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static const struct fun
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{
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const char *name;
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int (*fun)(const char *, const char *, size_t);
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} funtab[] = {
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#define F(x) {#x, x},
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F(strncmp)
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#if __aarch64__
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F(__strncmp_aarch64)
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# if __ARM_FEATURE_SVE
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F(__strncmp_aarch64_sve)
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# endif
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#endif
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#undef F
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{0, 0}
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};
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static int test_status;
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#define ERR(...) (test_status=1, printf(__VA_ARGS__))
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#define A 32
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#define LEN 250000
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static char s1buf[LEN+2*A];
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static char s2buf[LEN+2*A];
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static void *alignup(void *p)
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{
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return (void*)(((uintptr_t)p + A-1) & -A);
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}
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static void test(const struct fun *fun, int s1align, int s2align, int maxlen, int diffpos, int len)
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{
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char *src1 = alignup(s1buf);
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char *src2 = alignup(s2buf);
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char *s1 = src1 + s1align;
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char *s2 = src2 + s2align;
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int r;
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if (len > LEN || s1align >= A || s2align >= A)
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abort();
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if (diffpos > 1 && diffpos >= len-1)
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abort();
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for (int i = 0; i < len+A; i++)
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src1[i] = src2[i] = '?';
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for (int i = 0; i < len-1; i++)
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s1[i] = s2[i] = 'a' + i%23;
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if (diffpos > 1)
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s1[diffpos]++;
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s1[len] = s2[len] = '\0';
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r = fun->fun(s1, s2, maxlen);
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diffpos = maxlen <= diffpos ? 0 : diffpos;
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if (((diffpos <= 1) && r != 0) || (diffpos > 1 && r == 0)) {
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ERR("%s(align %d, align %d, %d (%d)) failed, returned %d (%d)\n",
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fun->name, s1align, s2align, maxlen, len, r, diffpos);
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ERR("src1: %.*s\n", s1align+len+1, src1);
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ERR("src2: %.*s\n", s2align+len+1, src2);
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}
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}
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int main()
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{
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int r = 0;
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for (int i=0; funtab[i].name; i++) {
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test_status = 0;
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for (int d = 0; d < A; d++)
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for (int s = 0; s < A; s++) {
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int n;
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for (n = 0; n < 100; n++) {
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test(funtab+i, d, s, n, 0, n);
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test(funtab+i, d, s, n, n/2, n);
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test(funtab+i, d, s, n/2, 0, n);
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test(funtab+i, d, s, n/2, n/2, n);
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}
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for (; n < LEN; n *= 2) {
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test(funtab+i, d, s, n, 0, n);
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test(funtab+i, d, s, n, n/2, n);
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test(funtab+i, d, s, n/2, 0, n);
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test(funtab+i, d, s, n/2, n/2, n);
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}
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}
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printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
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if (test_status)
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r = -1;
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}
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return r;
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}
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