tests/string/memcmp_test.c

48 	unsigned char data1[256], data2[256];
52 		data1[i] = data2[i] = i ^ 0x55;
54 		assert(memcmp(data1, data2, i) == 0);
56 		assert(memcmp(data1 + i, data2 + i, 256 - i) == 0);
62 	unsigned char data1[256], data2[256];
67 		data2[i] = i ^ 0x55;
70 		assert(memcmp(data1, data2, i) != 0);
72 		assert(memcmp(data1 + i, data2 + i, 256 - i) != 0);
78 	unsigned char data1[256], data2[256];
82 	memset(data2, 'a', sizeof(data2));
84 	data2[128] = 0;
86 		assert(memcmp(data1 + 128, data2 + 128, i) == 255);
87 		assert(memcmp(data2 + 128, data1 + 128, i) == -255);
88 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == 255);
89 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == -255);
90 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == 255);
91 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == -255);
94 	data2[128] = 'e';
96 		assert(memcmp(data1 + 128, data2 + 128, i) == -2);
97 		assert(memcmp(data2 + 128, data1 + 128, i) == 2);
98 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == -2);
99 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == 2);
100 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == -2);
101 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == 2);
104 	memset(data2 + 129, 'Z', sizeof(data2) - 129);
106 		assert(memcmp(data1 + 128, data2 + 128, i) == -2);
107 		assert(memcmp(data2 + 128, data1 + 128, i) == 2);
108 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i) == -2);
109 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i) == 2);
110 		assert(memcmp(data1 + 129 - i, data2 + 129 - i, i * 2) == -2);
111 		assert(memcmp(data2 + 129 - i, data1 + 129 - i, i * 2) == 2);