X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fcrc%2Ftest%2Fapi.c;h=524106d76d4bdcc1c6a901a9a8dc1e2fab3c4b03;hp=008d44fe6a126c56c4b6e75a53a6f16964779807;hb=HEAD;hpb=96b6d6f132aeec31adc0dfd0836f67e052694ac7

diff --git a/ccan/crc/test/api.c b/ccan/crc/test/api.c
index 008d44fe..524106d7 100644
--- a/ccan/crc/test/api.c
+++ b/ccan/crc/test/api.c
@@ -1,10 +1,55 @@
-#include "crc/crc.h"
-#include "crc/crc.c"
-#include "tap/tap.h"
+#include <ccan/crc/crc.h>
+#include <ccan/tap/tap.h>
 #include <string.h>
 
+static const uint32_t crc32_ieee_tab[] = {
+	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+	0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+	0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+	0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+	0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+	0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+	0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+	0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+	0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+	0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+	0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+	0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+	0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+	0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+	0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+	0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+	0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+	0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+	0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+	0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+	0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+	0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
 /* Expected CRCs of 4 of each char. */
-static uint32_t crc_expect[] = {
+static uint32_t crc_ieee_expect[] = {
 	0x2144df1c, 0xf626d399, 0x54f1c057, 0x8393ccd2, 0xca2ee18a, 0x1d4ced0f,
 	0xbf9bfec1, 0x68f9f244, 0x2ce1a471, 0xfb83a8f4, 0x5954bb3a, 0x8e36b7bf,
 	0xc78b9ae7, 0x10e99662, 0xb23e85ac, 0x655c8929, 0x3a0e29c6, 0xed6c2543,
@@ -50,20 +95,49 @@ static uint32_t crc_expect[] = {
 	0x5d28ec31, 0x8a4ae0b4, 0x289df37a, 0xffffffff,
 };
 
-int main(int argc, char *argv[])
+static uint32_t crc_ieee_zero_expect[] = {
+	0x00000000, 0xd202ef8d, 0x41d912ff, 0xff41d912
+};
+
+/* Runs 517 tests. */
+static void test_crc32(uint32_t (*crc)(uint32_t, const void *, size_t),
+		       const uint32_t *(*crc_table)(void),
+		       const uint32_t zero_expect[4],
+		       const uint32_t four_char_expect[256],
+		       const uint32_t *table_expect)
 {
 	unsigned int i;
 	char c[4] = { 0 };
 
-	plan_tests(260);
-	ok1(crc32(c, 0) == 0x00000000);
-	ok1(crc32(c, 1) == 0xd202ef8d);
-	ok1(crc32(c, 2) == 0x41d912ff);
-	ok1(crc32(c, 3) == 0xff41d912);
+	for (i = 0; i < 4; i++)
+		ok1(crc(0, c, i) == zero_expect[i]);
 
 	for (i = 0; i < 256; i++) {
 		memset(c, i, sizeof(c));
-		ok1(crc32(c, sizeof(c)) == crc_expect[i]);
+		ok1(crc(0, c, sizeof(c)) == four_char_expect[i]);
+		/* CRC in two parts should give same answer. */
+		ok1(crc(crc(0, c, i%5), c+i%5, 4 - (i%5))
+		    == four_char_expect[i]);
 	}
+	ok1(memcmp(crc_table(), table_expect, 1024) == 0);
+}
+
+static void test_crc64(void)
+{
+	/* according to http://swissknife.sourceforge.net/CRC64.html */
+	ok1(crc64_iso(0, "IHATEMATH", strlen("IHATEMATH"))
+	    == 0xE3DCADD69B01ADD1ULL);
+
+	/* according to the CRC64 poly, http://sf.net/projects/jcrcgen */
+	ok1(crc64_iso(0, "123456789", strlen("123456789"))
+	    == 0x46A5A9388A5BEFFEULL);
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(517 + 2);
+	test_crc32(crc32_ieee, crc32_ieee_table,
+		   crc_ieee_zero_expect, crc_ieee_expect, crc32_ieee_tab);
+	test_crc64();
 	return exit_status();
 }