Add 'neozip/' from commit 'c2712b8a345191f6ed79558c089777df94590087'

git-subtree-dir: neozip
git-subtree-mainline: b1e34e861b5d732afe828d58aad2c638135061fd
git-subtree-split: c2712b8a345191f6ed79558c089777df94590087

1 files changed, 96 insertions, 0 deletions

diff --git a/neozip/test/test_compare256.cc b/neozip/test/test_compare256.cc
new file mode 100644
index 0000000000..b3efe79fb9
--- /dev/null
+++ b/neozip/test/test_compare256.cc
@@ -0,0 +1,96 @@
+/* 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.h"
+#  include "arch_functions.h"
+#  include "test_cpu_features.h"
+}
+
+#include <gtest/gtest.h>
+
+#include "test_shared.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 *)PREFIX(zcalloc)(NULL, 1, MAX_COMPARE_SIZE);
+    ASSERT_TRUE(str1 != NULL);
+    memset(str1, 'a', MAX_COMPARE_SIZE);
+
+    str2 = (uint8_t *)PREFIX(zcalloc)(NULL, 1, 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';
+    }
+
+    PREFIX(zcfree)(NULL, str1);
+    PREFIX(zcfree)(NULL, str2);
+}
+
+#define TEST_COMPARE256(name, func, support_flag) \
+    TEST(compare256, name) { \
+        if (!(support_flag)) { \
+            GTEST_SKIP(); \
+            return; \
+        } \
+        compare256_match_check(func); \
+    }
+
+#ifdef DISABLE_RUNTIME_CPU_DETECTION
+TEST_COMPARE256(native, native_compare256, 1)
+#else
+
+#ifdef WITH_ALL_FALLBACKS
+TEST_COMPARE256(8, compare256_8, 1)
+TEST_COMPARE256(64, compare256_64, 1)
+#endif
+
+#ifdef X86_SSE2
+TEST_COMPARE256(sse2, compare256_sse2, test_cpu_features.x86.has_sse2)
+#endif
+#ifdef X86_AVX2
+TEST_COMPARE256(avx2, compare256_avx2, test_cpu_features.x86.has_avx2)
+#endif
+#ifdef X86_AVX512
+TEST_COMPARE256(avx512, compare256_avx512, test_cpu_features.x86.has_avx512_common)
+#endif
+#ifdef ARM_NEON
+TEST_COMPARE256(neon, compare256_neon, test_cpu_features.arm.has_neon)
+#endif
+#ifdef POWER9
+TEST_COMPARE256(power9, compare256_power9, test_cpu_features.power.has_arch_3_00)
+#endif
+#ifdef RISCV_RVV
+TEST_COMPARE256(rvv, compare256_rvv, test_cpu_features.riscv.has_rvv)
+#endif
+#ifdef LOONGARCH_LSX
+TEST_COMPARE256(lsx, compare256_lsx, test_cpu_features.loongarch.has_lsx)
+#endif
+#ifdef LOONGARCH_LASX
+TEST_COMPARE256(lasx, compare256_lasx, test_cpu_features.loongarch.has_lasx)
+#endif
+
+#endif