commit 310e7ecfc4b1b143c9eea230eaeb693a5b86e2b0
parent 3566d29c197908319a71f8b9c3148945c792664f
Author: Kiëd Llaentenn <kiedtl@tilde.team>
Date: Sat, 24 Apr 2021 17:54:09 +0000
Add hash::crc32
Adds the hash::crc32 module, implementing CRC32 with predefined
constants and tables for the IEEE, Castagnoli, and Koopman polynomials.
Example use:
let crc = hash::crc32::crc32(&hash::crc32::IEEE_TABLE);
defer hash::close(crc);
hash::write(crc, strings::toutf8("Black lives matter"));
fmt::printfln("{:X}", hash::crc32::sum32(crc)); // => 8D520A6F
The module supports use of a custom polynomial table, and includes a
utility function (hash::crc32::memoize) to populate such a table given a
user-provided polynomial:
const KOOPMAN2: u32 = 0x992C1A4C;
let k_table: [256]u32 = [0...];
hash::crc32::memoize(KOOPMAN2, &k_table);
let k_crc = hash::crc32::crc32(&k_table);
defer hash::close(k_crc);
hash::write(k_crc, strings::toutf8("Black lives matter"));
fmt::printfln("{:X}", hash::crc32::sum32(k_crc)); // => 224C3FE0
Signed-off-by: Kiëd Llaentenn <kiedtl@tilde.team>
Diffstat:
4 files changed, 312 insertions(+), 0 deletions(-)
diff --git a/hash/crc32/README b/hash/crc32/README
@@ -0,0 +1 @@
+Implements the CRC-32 checksum algorithm. It is a non-cryptographic checksum.
diff --git a/hash/crc32/crc32.ha b/hash/crc32/crc32.ha
@@ -0,0 +1,278 @@
+use endian;
+use hash;
+use io;
+use strings;
+
+// IEEE polynomial for CRC-32. Used in ethernet, SATA, MPEG-2, gzip, bsip2,
+// cksum, PNG, etc. It is by far the most common polynomial used.
+export const IEEE: u32 = 0xedb88320;
+
+// Castagnoli polynomial for CRC-32. Used in iSCSI, SCTP, SSE4.2, btrfs, ext4,
+// and others. It's known to have better error detection than IEEE.
+export const CASTAGNOLI: u32 = 0x82f63b78;
+
+// Koopman polnomial for CRC-32. It has good performance for small datasets, but
+// poor performance for large ones. Like the Castagnoli polynomial, it has
+// better error detection than the IEEE polynomial.
+export const KOOPMAN: u32 = 0xeb31d82e;
+
+// Table of memoized values for each byte with the IEEE polynomial.
+export const IEEE_TABLE: [256]u32 = [
+ 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
+];
+
+// Table of memoized values for each byte with the Castagnoli polynomial.
+export const CASTAGNOLI_TABLE: [256]u32 = [
+ 0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, 0xC79A971F, 0x35F1141C,
+ 0x26A1E7E8, 0xD4CA64EB, 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B,
+ 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24, 0x105EC76F, 0xE235446C,
+ 0xF165B798, 0x030E349B, 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384,
+ 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, 0x5D1D08BF, 0xAF768BBC,
+ 0xBC267848, 0x4E4DFB4B, 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A,
+ 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35, 0xAA64D611, 0x580F5512,
+ 0x4B5FA6E6, 0xB93425E5, 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA,
+ 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, 0xF779DEAE, 0x05125DAD,
+ 0x1642AE59, 0xE4292D5A, 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A,
+ 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595, 0x417B1DBC, 0xB3109EBF,
+ 0xA0406D4B, 0x522BEE48, 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957,
+ 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, 0x0C38D26C, 0xFE53516F,
+ 0xED03A29B, 0x1F682198, 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927,
+ 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38, 0xDBFC821C, 0x2997011F,
+ 0x3AC7F2EB, 0xC8AC71E8, 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7,
+ 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, 0xA65C047D, 0x5437877E,
+ 0x4767748A, 0xB50CF789, 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859,
+ 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46, 0x7198540D, 0x83F3D70E,
+ 0x90A324FA, 0x62C8A7F9, 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6,
+ 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, 0x3CDB9BDD, 0xCEB018DE,
+ 0xDDE0EB2A, 0x2F8B6829, 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C,
+ 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93, 0x082F63B7, 0xFA44E0B4,
+ 0xE9141340, 0x1B7F9043, 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C,
+ 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, 0x55326B08, 0xA759E80B,
+ 0xB4091BFF, 0x466298FC, 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C,
+ 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033, 0xA24BB5A6, 0x502036A5,
+ 0x4370C551, 0xB11B4652, 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D,
+ 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, 0xEF087A76, 0x1D63F975,
+ 0x0E330A81, 0xFC588982, 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D,
+ 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622, 0x38CC2A06, 0xCAA7A905,
+ 0xD9F75AF1, 0x2B9CD9F2, 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED,
+ 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, 0x0417B1DB, 0xF67C32D8,
+ 0xE52CC12C, 0x1747422F, 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF,
+ 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0, 0xD3D3E1AB, 0x21B862A8,
+ 0x32E8915C, 0xC083125F, 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540,
+ 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, 0x9E902E7B, 0x6CFBAD78,
+ 0x7FAB5E8C, 0x8DC0DD8F, 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE,
+ 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1, 0x69E9F0D5, 0x9B8273D6,
+ 0x88D28022, 0x7AB90321, 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E,
+ 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, 0x34F4F86A, 0xC69F7B69,
+ 0xD5CF889D, 0x27A40B9E, 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E,
+ 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351
+];
+
+// Table of memoized values for each byte with the Koopman polynomial.
+export const KOOPMAN_TABLE: [256]u32 = [
+ 0x00000000, 0x9695C4CA, 0xFB4839C9, 0x6DDDFD03, 0x20F3C3CF, 0xB6660705,
+ 0xDBBBFA06, 0x4D2E3ECC, 0x41E7879E, 0xD7724354, 0xBAAFBE57, 0x2C3A7A9D,
+ 0x61144451, 0xF781809B, 0x9A5C7D98, 0x0CC9B952, 0x83CF0F3C, 0x155ACBF6,
+ 0x788736F5, 0xEE12F23F, 0xA33CCCF3, 0x35A90839, 0x5874F53A, 0xCEE131F0,
+ 0xC22888A2, 0x54BD4C68, 0x3960B16B, 0xAFF575A1, 0xE2DB4B6D, 0x744E8FA7,
+ 0x199372A4, 0x8F06B66E, 0xD1FDAE25, 0x47686AEF, 0x2AB597EC, 0xBC205326,
+ 0xF10E6DEA, 0x679BA920, 0x0A465423, 0x9CD390E9, 0x901A29BB, 0x068FED71,
+ 0x6B521072, 0xFDC7D4B8, 0xB0E9EA74, 0x267C2EBE, 0x4BA1D3BD, 0xDD341777,
+ 0x5232A119, 0xC4A765D3, 0xA97A98D0, 0x3FEF5C1A, 0x72C162D6, 0xE454A61C,
+ 0x89895B1F, 0x1F1C9FD5, 0x13D52687, 0x8540E24D, 0xE89D1F4E, 0x7E08DB84,
+ 0x3326E548, 0xA5B32182, 0xC86EDC81, 0x5EFB184B, 0x7598EC17, 0xE30D28DD,
+ 0x8ED0D5DE, 0x18451114, 0x556B2FD8, 0xC3FEEB12, 0xAE231611, 0x38B6D2DB,
+ 0x347F6B89, 0xA2EAAF43, 0xCF375240, 0x59A2968A, 0x148CA846, 0x82196C8C,
+ 0xEFC4918F, 0x79515545, 0xF657E32B, 0x60C227E1, 0x0D1FDAE2, 0x9B8A1E28,
+ 0xD6A420E4, 0x4031E42E, 0x2DEC192D, 0xBB79DDE7, 0xB7B064B5, 0x2125A07F,
+ 0x4CF85D7C, 0xDA6D99B6, 0x9743A77A, 0x01D663B0, 0x6C0B9EB3, 0xFA9E5A79,
+ 0xA4654232, 0x32F086F8, 0x5F2D7BFB, 0xC9B8BF31, 0x849681FD, 0x12034537,
+ 0x7FDEB834, 0xE94B7CFE, 0xE582C5AC, 0x73170166, 0x1ECAFC65, 0x885F38AF,
+ 0xC5710663, 0x53E4C2A9, 0x3E393FAA, 0xA8ACFB60, 0x27AA4D0E, 0xB13F89C4,
+ 0xDCE274C7, 0x4A77B00D, 0x07598EC1, 0x91CC4A0B, 0xFC11B708, 0x6A8473C2,
+ 0x664DCA90, 0xF0D80E5A, 0x9D05F359, 0x0B903793, 0x46BE095F, 0xD02BCD95,
+ 0xBDF63096, 0x2B63F45C, 0xEB31D82E, 0x7DA41CE4, 0x1079E1E7, 0x86EC252D,
+ 0xCBC21BE1, 0x5D57DF2B, 0x308A2228, 0xA61FE6E2, 0xAAD65FB0, 0x3C439B7A,
+ 0x519E6679, 0xC70BA2B3, 0x8A259C7F, 0x1CB058B5, 0x716DA5B6, 0xE7F8617C,
+ 0x68FED712, 0xFE6B13D8, 0x93B6EEDB, 0x05232A11, 0x480D14DD, 0xDE98D017,
+ 0xB3452D14, 0x25D0E9DE, 0x2919508C, 0xBF8C9446, 0xD2516945, 0x44C4AD8F,
+ 0x09EA9343, 0x9F7F5789, 0xF2A2AA8A, 0x64376E40, 0x3ACC760B, 0xAC59B2C1,
+ 0xC1844FC2, 0x57118B08, 0x1A3FB5C4, 0x8CAA710E, 0xE1778C0D, 0x77E248C7,
+ 0x7B2BF195, 0xEDBE355F, 0x8063C85C, 0x16F60C96, 0x5BD8325A, 0xCD4DF690,
+ 0xA0900B93, 0x3605CF59, 0xB9037937, 0x2F96BDFD, 0x424B40FE, 0xD4DE8434,
+ 0x99F0BAF8, 0x0F657E32, 0x62B88331, 0xF42D47FB, 0xF8E4FEA9, 0x6E713A63,
+ 0x03ACC760, 0x953903AA, 0xD8173D66, 0x4E82F9AC, 0x235F04AF, 0xB5CAC065,
+ 0x9EA93439, 0x083CF0F3, 0x65E10DF0, 0xF374C93A, 0xBE5AF7F6, 0x28CF333C,
+ 0x4512CE3F, 0xD3870AF5, 0xDF4EB3A7, 0x49DB776D, 0x24068A6E, 0xB2934EA4,
+ 0xFFBD7068, 0x6928B4A2, 0x04F549A1, 0x92608D6B, 0x1D663B05, 0x8BF3FFCF,
+ 0xE62E02CC, 0x70BBC606, 0x3D95F8CA, 0xAB003C00, 0xC6DDC103, 0x504805C9,
+ 0x5C81BC9B, 0xCA147851, 0xA7C98552, 0x315C4198, 0x7C727F54, 0xEAE7BB9E,
+ 0x873A469D, 0x11AF8257, 0x4F549A1C, 0xD9C15ED6, 0xB41CA3D5, 0x2289671F,
+ 0x6FA759D3, 0xF9329D19, 0x94EF601A, 0x027AA4D0, 0x0EB31D82, 0x9826D948,
+ 0xF5FB244B, 0x636EE081, 0x2E40DE4D, 0xB8D51A87, 0xD508E784, 0x439D234E,
+ 0xCC9B9520, 0x5A0E51EA, 0x37D3ACE9, 0xA1466823, 0xEC6856EF, 0x7AFD9225,
+ 0x17206F26, 0x81B5ABEC, 0x8D7C12BE, 0x1BE9D674, 0x76342B77, 0xE0A1EFBD,
+ 0xAD8FD171, 0x3B1A15BB, 0x56C7E8B8, 0xC0522C72
+];
+
+// Populate a user-provided buffer with the memoized values for a custom
+// polynomial.
+//
+// The user-provided polynomial must be in the reversed form.
+export fn memoize(polynomial: u32, buf: *[256]u32) void = {
+ for (let i = 0z; i < 256; i += 1) {
+ let value = i: u32;
+ for (let z = 0z; z < 8; z += 1) {
+ value = if (value & 0x1 == 1) {
+ (value >> 1) ^ polynomial;
+ } else {
+ value >> 1;
+ };
+ };
+ buf[i] = value;
+ };
+};
+
+type state = struct {
+ hash: hash::hash,
+ table: *[256]u32,
+ cval: u32,
+};
+
+// Creates a [[hash::hash]] which computes the CRC-32 algorithm.
+//
+// It takes a table of memoized values for a given polynomail (for example,
+// [[IEEE_TABLE]], [[CASTAGNOLI_TABLE]], or [[KOOPMAN_TABLE]]); a table for a
+// custom polynomial, populated by [[memoize]] function, may also be used.
+export fn crc32(table: *[256]u32) *hash::hash = alloc(state {
+ hash = hash::hash {
+ stream = io::stream {
+ writer = &write,
+ closer = &close,
+ ...
+ },
+ sum = &sum,
+ reset = &reset,
+ sz = 4,
+ },
+ table = table,
+ cval = ~0u32,
+}): *hash::hash;
+
+fn close(s: *io::stream) void = free(s);
+
+fn write(s: *io::stream, buf: const []u8) (size | io::error) = {
+ let s = s: *state;
+ for (let i = 0z; i < len(buf); i += 1) {
+ let rightbits = s.cval & 0xFF;
+ s.cval = s.table[rightbits ^ buf[i]] ^ (s.cval >> 8);
+ };
+ return len(buf);
+};
+
+fn reset(h: *hash::hash) void = {
+ let h = h: *state;
+ h.cval = ~0u32;
+};
+
+fn sum(h: *hash::hash) []u8 = {
+ let h = h: *state;
+ let buf: [4]u8 = [0...];
+ endian::host.putu32(buf, ~h.cval);
+ return alloc(buf);
+};
+
+export fn sum32(h: *hash::hash) u32 = {
+ assert(h.reset == &reset);
+ let h = h: *state;
+ return ~h.cval;
+};
+
+@test fn crc32() void = {
+ const vectors: [](str, u32, u32, u32) = [
+ ("", 0, 0, 0),
+ ("Give a man a fire, they be warm for a day", 4026734998, 2112273292, 1263149916),
+ ("Set a man on fire, they be warm for the rest of their life", 3931092334, 4172943610, 3071632577),
+ ("By trying we can easily learn to endure adversity. Another man's, I mean.", 3101256971, 2228454711, 3853172117),
+ ("Civilization is the limitless multiplication of unnecessary necessities.", 3294636496, 2539066349, 896967959),
+ ("Black lives matter", 2370964079, 2068416418, 4151357773),
+ ("UNIX is simple and coherent", 3254252081, 1650777601, 340189632),
+ ("GNU's not UNIX", 224734747, 200511816, 332335539)
+ ];
+
+ let crc_ieee = crc32(&IEEE_TABLE);
+ defer hash::close(crc_ieee);
+
+ let crc_castagnoli = crc32(&CASTAGNOLI_TABLE);
+ defer hash::close(crc_castagnoli);
+
+ let crc_koopman = crc32(&KOOPMAN_TABLE);
+ defer hash::close(crc_koopman);
+
+ for (let i = 0z; i < len(vectors); i += 1) {
+ let vec = vectors[i];
+
+ hash::reset(crc_ieee);
+ hash::write(crc_ieee, strings::toutf8(vec.0));
+ let s = hash::sum(crc_ieee);
+ defer free(s);
+ assert(endian::host.getu32(s) == vec.1);
+ assert(sum32(crc_ieee) == vec.1);
+
+ hash::reset(crc_castagnoli);
+ hash::write(crc_castagnoli, strings::toutf8(vec.0));
+ let s = hash::sum(crc_castagnoli);
+ defer free(s);
+ assert(endian::host.getu32(s) == vec.2);
+ assert(sum32(crc_castagnoli) == vec.2);
+
+ hash::reset(crc_koopman);
+ hash::write(crc_koopman, strings::toutf8(vec.0));
+ let s = hash::sum(crc_koopman);
+ defer free(s);
+ assert(endian::host.getu32(s) == vec.3);
+ assert(sum32(crc_koopman) == vec.3);
+ };
+};
diff --git a/scripts/gen-stdlib b/scripts/gen-stdlib
@@ -416,6 +416,12 @@ hash_adler32() {
gen_ssa hash::adler32 endian hash io strings
}
+hash_crc32() {
+ gen_srcs hash::crc32 \
+ crc32.ha
+ gen_ssa hash::crc32 endian hash io strings
+}
+
hash_fnv() {
gen_srcs hash::fnv \
fnv.ha
@@ -698,6 +704,7 @@ hare_parse
hare_unparse
hash
hash_adler32
+hash_crc32
hash_fnv
io
linux
diff --git a/stdlib.mk b/stdlib.mk
@@ -159,6 +159,9 @@ hare_stdlib_deps+=$(stdlib_hash)
stdlib_hash_adler32=$(HARECACHE)/hash/adler32/hash_adler32.o
hare_stdlib_deps+=$(stdlib_hash_adler32)
+stdlib_hash_crc32=$(HARECACHE)/hash/crc32/hash_crc32.o
+hare_stdlib_deps+=$(stdlib_hash_crc32)
+
stdlib_hash_fnv=$(HARECACHE)/hash/fnv/hash_fnv.o
hare_stdlib_deps+=$(stdlib_hash_fnv)
@@ -579,6 +582,16 @@ $(HARECACHE)/hash/adler32/hash_adler32.ssa: $(stdlib_hash_adler32_srcs) $(stdlib
@HARECACHE=$(HARECACHE) $(HAREC) $(HAREFLAGS) -o $@ -Nhash::adler32 \
-t$(HARECACHE)/hash/adler32/hash_adler32.td $(stdlib_hash_adler32_srcs)
+# hash::crc32
+stdlib_hash_crc32_srcs= \
+ $(STDLIB)/hash/crc32/crc32.ha
+
+$(HARECACHE)/hash/crc32/hash_crc32.ssa: $(stdlib_hash_crc32_srcs) $(stdlib_rt) $(stdlib_endian) $(stdlib_hash) $(stdlib_io) $(stdlib_strings)
+ @printf 'HAREC \t$@\n'
+ @mkdir -p $(HARECACHE)/hash/crc32
+ @HARECACHE=$(HARECACHE) $(HAREC) $(HAREFLAGS) -o $@ -Nhash::crc32 \
+ -t$(HARECACHE)/hash/crc32/hash_crc32.td $(stdlib_hash_crc32_srcs)
+
# hash::fnv
stdlib_hash_fnv_srcs= \
$(STDLIB)/hash/fnv/fnv.ha
@@ -1039,6 +1052,9 @@ hare_testlib_deps+=$(testlib_hash)
testlib_hash_adler32=$(TESTCACHE)/hash/adler32/hash_adler32.o
hare_testlib_deps+=$(testlib_hash_adler32)
+testlib_hash_crc32=$(TESTCACHE)/hash/crc32/hash_crc32.o
+hare_testlib_deps+=$(testlib_hash_crc32)
+
testlib_hash_fnv=$(TESTCACHE)/hash/fnv/hash_fnv.o
hare_testlib_deps+=$(testlib_hash_fnv)
@@ -1472,6 +1488,16 @@ $(TESTCACHE)/hash/adler32/hash_adler32.ssa: $(testlib_hash_adler32_srcs) $(testl
@HARECACHE=$(TESTCACHE) $(HAREC) $(TESTHAREFLAGS) -o $@ -Nhash::adler32 \
-t$(TESTCACHE)/hash/adler32/hash_adler32.td $(testlib_hash_adler32_srcs)
+# hash::crc32
+testlib_hash_crc32_srcs= \
+ $(STDLIB)/hash/crc32/crc32.ha
+
+$(TESTCACHE)/hash/crc32/hash_crc32.ssa: $(testlib_hash_crc32_srcs) $(testlib_rt) $(testlib_endian) $(testlib_hash) $(testlib_io) $(testlib_strings)
+ @printf 'HAREC \t$@\n'
+ @mkdir -p $(TESTCACHE)/hash/crc32
+ @HARECACHE=$(TESTCACHE) $(HAREC) $(TESTHAREFLAGS) -o $@ -Nhash::crc32 \
+ -t$(TESTCACHE)/hash/crc32/hash_crc32.td $(testlib_hash_crc32_srcs)
+
# hash::fnv
testlib_hash_fnv_srcs= \
$(STDLIB)/hash/fnv/fnv.ha
