| /* test_compare256.cc -- compare256 unit tests |
| * Copyright (C) 2022 Nathan Moinvaziri |
| * For conditions of distribution and use, see copyright notice in zlib.h |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| |
| extern "C" { |
| # include "zbuild.h" |
| # include "zutil_p.h" |
| # include "cpu_features.h" |
| } |
| |
| #include <gtest/gtest.h> |
| |
| #define MAX_COMPARE_SIZE (256) |
| |
| /* Ensure that compare256 returns the correct match length */ |
| static inline void compare256_match_check(compare256_func compare256) { |
| int32_t match_len, i; |
| uint8_t *str1; |
| uint8_t *str2; |
| |
| str1 = (uint8_t *)zng_alloc(MAX_COMPARE_SIZE); |
| ASSERT_TRUE(str1 != NULL); |
| memset(str1, 'a', MAX_COMPARE_SIZE); |
| |
| str2 = (uint8_t *)zng_alloc(MAX_COMPARE_SIZE); |
| ASSERT_TRUE(str2 != NULL); |
| memset(str2, 'a', MAX_COMPARE_SIZE); |
| |
| for (i = 0; i <= MAX_COMPARE_SIZE; i++) { |
| if (i < MAX_COMPARE_SIZE) |
| str2[i] = 0; |
| |
| match_len = compare256(str1, str2); |
| EXPECT_EQ(match_len, i); |
| |
| if (i < MAX_COMPARE_SIZE) |
| str2[i] = 'a'; |
| } |
| |
| zng_free(str1); |
| zng_free(str2); |
| } |
| |
| #define TEST_COMPARE256(name, func, support_flag) \ |
| TEST(compare256, name) { \ |
| if (!support_flag) { \ |
| GTEST_SKIP(); \ |
| return; \ |
| } \ |
| compare256_match_check(func); \ |
| } |
| |
| TEST_COMPARE256(c, compare256_c, 1) |
| |
| #ifdef UNALIGNED_OK |
| TEST_COMPARE256(unaligned_16, compare256_unaligned_16, 1) |
| #ifdef HAVE_BUILTIN_CTZ |
| TEST_COMPARE256(unaligned_32, compare256_unaligned_32, 1) |
| #endif |
| #if defined(UNALIGNED64_OK) && defined(HAVE_BUILTIN_CTZLL) |
| TEST_COMPARE256(unaligned_64, compare256_unaligned_64, 1) |
| #endif |
| #endif |
| #if defined(X86_SSE2) && defined(HAVE_BUILTIN_CTZ) |
| TEST_COMPARE256(sse2, compare256_sse2, x86_cpu_has_sse2) |
| #endif |
| #if defined(X86_AVX2) && defined(HAVE_BUILTIN_CTZ) |
| TEST_COMPARE256(avx2, compare256_avx2, x86_cpu_has_avx2) |
| #endif |
| #if defined(ARM_NEON) && defined(HAVE_BUILTIN_CTZLL) |
| TEST_COMPARE256(neon, compare256_neon, arm_cpu_has_neon) |
| #endif |
| #ifdef POWER9 |
| TEST_COMPARE256(power9, compare256_power9, power_cpu_has_arch_3_00) |
| #endif |