--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/test_compare.h	Tue Oct 22 22:39:05 2024 -0400
@@ -0,0 +1,72 @@
+#define CREATE_TEST(sign, psign, bits, size, op, equiv) \
+	static int test_compare_v##sign##int##bits##x##size##_##op(v##sign##int##bits##x##size a, v##sign##int##bits##x##size b) \
+	{ \
+		sign##int##bits##_t orig_a[size], orig_b[size], orig_c[size]; \
+	\
+		v##sign##int##bits##x##size c = v##sign##int##bits##x##size##_##op(a, b); \
+	\
+		v##sign##int##bits##x##size##_store(a, orig_a); \
+		v##sign##int##bits##x##size##_store(b, orig_b); \
+		v##sign##int##bits##x##size##_store(c, orig_c); \
+	\
+		for (int i = 0; i < size; i++) { \
+			if ((sign##int##bits##_t)(((equiv) ? UINT##bits##_MAX : 0)) != orig_c[i]) { \
+				fprintf(stderr, "v" #sign "int" #bits "x" #size "_" #op " test FAILED at index %d: (" #equiv ") [%" PRI ## psign ## bits "] does not equal result [%" PRI ## psign ## bits "]!\n", i, equiv, orig_c[i]); \
+				print_v##sign##int##bits##x##size(stderr,a); \
+				print_v##sign##int##bits##x##size(stderr,b); \
+				print_v##sign##int##bits##x##size(stderr,c); \
+				fprintf(stderr, "\n"); \
+				return 1; \
+			} \
+		} \
+	\
+		return 0; \
+	}
+
+#define CREATE_TESTS(sign, psign, bits, size) \
+	CREATE_TEST(sign, psign, bits, size, cmplt, orig_a[i] < orig_b[i]) \
+	CREATE_TEST(sign, psign, bits, size, cmpgt, orig_a[i] > orig_b[i]) \
+	CREATE_TEST(sign, psign, bits, size, cmpeq, orig_a[i] == orig_b[i]) \
+	CREATE_TEST(sign, psign, bits, size, cmple, orig_a[i] <= orig_b[i]) \
+	CREATE_TEST(sign, psign, bits, size, cmpge, orig_a[i] >= orig_b[i])
+
+#define CREATE_TESTS_2(bits, size) CREATE_TESTS(, d, bits, size) CREATE_TESTS(u, u, bits, size)
+
+CREATE_TESTS_2(8, 16)
+CREATE_TESTS_2(16, 8)
+CREATE_TESTS_2(32, 4)
+CREATE_TESTS_2(64, 2)
+
+#undef CREATE_TESTS_2
+#undef CREATE_TESTS
+#undef CREATE_TEST
+
+static int test_compare(void)
+{
+	int ret = 0;
+
+#define RUN_TESTS(sign, bits, size) \
+	for (size_t i = 0U; i < ARRAY_SIZE(testval##sign##bits); i++) { \
+		const v##sign##int##bits##x##size a = vtest##sign##bits##x##size(i); \
+		for (size_t j = 0U; j < ARRAY_SIZE(testval##sign##bits); j++) { \
+			const v##sign##int##bits##x##size b = vtest##sign##bits##x##size(j); \
+			ret |= test_compare_v##sign##int##bits##x##size##_cmplt(a, b); \
+			ret |= test_compare_v##sign##int##bits##x##size##_cmpgt(a, b); \
+			ret |= test_compare_v##sign##int##bits##x##size##_cmpeq(a, b); \
+			ret |= test_compare_v##sign##int##bits##x##size##_cmple(a, b); \
+			ret |= test_compare_v##sign##int##bits##x##size##_cmpge(a, b); \
+		} \
+	}
+
+#define RUN_TESTS_2(bits, size) RUN_TESTS(, bits, size) RUN_TESTS(u, bits, size)
+
+	RUN_TESTS_2(8, 16)
+	RUN_TESTS_2(16, 8)
+	RUN_TESTS_2(32, 4)
+	RUN_TESTS_2(64, 2)
+
+#undef RUN_TESTS_2
+#undef RUN_TESTS
+
+	return ret;
+}
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