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manuel-rubio/crc16.erl

Last active August 11, 2023 13:37
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crc16.erl
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crc16.erl
-module(crc16).
-export([calculate/1]).
calculate(Data) ->
calculate(Data, 0).
calculate([H | T], CRC) when H >= 0 andalso H =< 255 ->
calculate(T, (CRC bsl 8) bxor crc16tab(((CRC bsr 8) bxor H) band 16#00FF));
calculate([], CRC) ->
CRC.
crc16tab(0) -> 16#0000;
crc16tab(1) -> 16#1021;
crc16tab(2) -> 16#2042;
crc16tab(3) -> 16#3063;
crc16tab(4) -> 16#4084;
crc16tab(5) -> 16#50a5;
crc16tab(6) -> 16#60c6;
crc16tab(7) -> 16#70e7;
crc16tab(8) -> 16#8108;
crc16tab(9) -> 16#9129;
crc16tab(10) -> 16#a14a;
crc16tab(11) -> 16#b16b;
crc16tab(12) -> 16#c18c;
crc16tab(13) -> 16#d1ad;
crc16tab(14) -> 16#e1ce;
crc16tab(15) -> 16#f1ef;
crc16tab(16) -> 16#1231;
crc16tab(17) -> 16#0210;
crc16tab(18) -> 16#3273;
crc16tab(19) -> 16#2252;
crc16tab(20) -> 16#52b5;
crc16tab(21) -> 16#4294;
crc16tab(22) -> 16#72f7;
crc16tab(23) -> 16#62d6;
crc16tab(24) -> 16#9339;
crc16tab(25) -> 16#8318;
crc16tab(26) -> 16#b37b;
crc16tab(27) -> 16#a35a;
crc16tab(28) -> 16#d3bd;
crc16tab(29) -> 16#c39c;
crc16tab(30) -> 16#f3ff;
crc16tab(31) -> 16#e3de;
crc16tab(32) -> 16#2462;
crc16tab(33) -> 16#3443;
crc16tab(34) -> 16#0420;
crc16tab(35) -> 16#1401;
crc16tab(36) -> 16#64e6;
crc16tab(37) -> 16#74c7;
crc16tab(38) -> 16#44a4;
crc16tab(39) -> 16#5485;
crc16tab(40) -> 16#a56a;
crc16tab(41) -> 16#b54b;
crc16tab(42) -> 16#8528;
crc16tab(43) -> 16#9509;
crc16tab(44) -> 16#e5ee;
crc16tab(45) -> 16#f5cf;
crc16tab(46) -> 16#c5ac;
crc16tab(47) -> 16#d58d;
crc16tab(48) -> 16#3653;
crc16tab(49) -> 16#2672;
crc16tab(50) -> 16#1611;
crc16tab(51) -> 16#0630;
crc16tab(52) -> 16#76d7;
crc16tab(53) -> 16#66f6;
crc16tab(54) -> 16#5695;
crc16tab(55) -> 16#46b4;
crc16tab(56) -> 16#b75b;
crc16tab(57) -> 16#a77a;
crc16tab(58) -> 16#9719;
crc16tab(59) -> 16#8738;
crc16tab(60) -> 16#f7df;
crc16tab(61) -> 16#e7fe;
crc16tab(62) -> 16#d79d;
crc16tab(63) -> 16#c7bc;
crc16tab(64) -> 16#48c4;
crc16tab(65) -> 16#58e5;
crc16tab(66) -> 16#6886;
crc16tab(67) -> 16#78a7;
crc16tab(68) -> 16#0840;
crc16tab(69) -> 16#1861;
crc16tab(70) -> 16#2802;
crc16tab(71) -> 16#3823;
crc16tab(72) -> 16#c9cc;
crc16tab(73) -> 16#d9ed;
crc16tab(74) -> 16#e98e;
crc16tab(75) -> 16#f9af;
crc16tab(76) -> 16#8948;
crc16tab(77) -> 16#9969;
crc16tab(78) -> 16#a90a;
crc16tab(79) -> 16#b92b;
crc16tab(80) -> 16#5af5;
crc16tab(81) -> 16#4ad4;
crc16tab(82) -> 16#7ab7;
crc16tab(83) -> 16#6a96;
crc16tab(84) -> 16#1a71;
crc16tab(85) -> 16#0a50;
crc16tab(86) -> 16#3a33;
crc16tab(87) -> 16#2a12;
crc16tab(88) -> 16#dbfd;
crc16tab(89) -> 16#cbdc;
crc16tab(90) -> 16#fbbf;
crc16tab(91) -> 16#eb9e;
crc16tab(92) -> 16#9b79;
crc16tab(93) -> 16#8b58;
crc16tab(94) -> 16#bb3b;
crc16tab(95) -> 16#ab1a;
crc16tab(96) -> 16#6ca6;
crc16tab(97) -> 16#7c87;
crc16tab(98) -> 16#4ce4;
crc16tab(99) -> 16#5cc5;
crc16tab(100) -> 16#2c22;
crc16tab(101) -> 16#3c03;
crc16tab(102) -> 16#0c60;
crc16tab(103) -> 16#1c41;
crc16tab(104) -> 16#edae;
crc16tab(105) -> 16#fd8f;
crc16tab(106) -> 16#cdec;
crc16tab(107) -> 16#ddcd;
crc16tab(108) -> 16#ad2a;
crc16tab(109) -> 16#bd0b;
crc16tab(110) -> 16#8d68;
crc16tab(111) -> 16#9d49;
crc16tab(112) -> 16#7e97;
crc16tab(113) -> 16#6eb6;
crc16tab(114) -> 16#5ed5;
crc16tab(115) -> 16#4ef4;
crc16tab(116) -> 16#3e13;
crc16tab(117) -> 16#2e32;
crc16tab(118) -> 16#1e51;
crc16tab(119) -> 16#0e70;
crc16tab(120) -> 16#ff9f;
crc16tab(121) -> 16#efbe;
crc16tab(122) -> 16#dfdd;
crc16tab(123) -> 16#cffc;
crc16tab(124) -> 16#bf1b;
crc16tab(125) -> 16#af3a;
crc16tab(126) -> 16#9f59;
crc16tab(127) -> 16#8f78;
crc16tab(128) -> 16#9188;
crc16tab(129) -> 16#81a9;
crc16tab(130) -> 16#b1ca;
crc16tab(131) -> 16#a1eb;
crc16tab(132) -> 16#d10c;
crc16tab(133) -> 16#c12d;
crc16tab(134) -> 16#f14e;
crc16tab(135) -> 16#e16f;
crc16tab(136) -> 16#1080;
crc16tab(137) -> 16#00a1;
crc16tab(138) -> 16#30c2;
crc16tab(139) -> 16#20e3;
crc16tab(140) -> 16#5004;
crc16tab(141) -> 16#4025;
crc16tab(142) -> 16#7046;
crc16tab(143) -> 16#6067;
crc16tab(144) -> 16#83b9;
crc16tab(145) -> 16#9398;
crc16tab(146) -> 16#a3fb;
crc16tab(147) -> 16#b3da;
crc16tab(148) -> 16#c33d;
crc16tab(149) -> 16#d31c;
crc16tab(150) -> 16#e37f;
crc16tab(151) -> 16#f35e;
crc16tab(152) -> 16#02b1;
crc16tab(153) -> 16#1290;
crc16tab(154) -> 16#22f3;
crc16tab(155) -> 16#32d2;
crc16tab(156) -> 16#4235;
crc16tab(157) -> 16#5214;
crc16tab(158) -> 16#6277;
crc16tab(159) -> 16#7256;
crc16tab(160) -> 16#b5ea;
crc16tab(161) -> 16#a5cb;
crc16tab(162) -> 16#95a8;
crc16tab(163) -> 16#8589;
crc16tab(164) -> 16#f56e;
crc16tab(165) -> 16#e54f;
crc16tab(166) -> 16#d52c;
crc16tab(167) -> 16#c50d;
crc16tab(168) -> 16#34e2;
crc16tab(169) -> 16#24c3;
crc16tab(170) -> 16#14a0;
crc16tab(171) -> 16#0481;
crc16tab(172) -> 16#7466;
crc16tab(173) -> 16#6447;
crc16tab(174) -> 16#5424;
crc16tab(175) -> 16#4405;
crc16tab(176) -> 16#a7db;
crc16tab(177) -> 16#b7fa;
crc16tab(178) -> 16#8799;
crc16tab(179) -> 16#97b8;
crc16tab(180) -> 16#e75f;
crc16tab(181) -> 16#f77e;
crc16tab(182) -> 16#c71d;
crc16tab(183) -> 16#d73c;
crc16tab(184) -> 16#26d3;
crc16tab(185) -> 16#36f2;
crc16tab(186) -> 16#0691;
crc16tab(187) -> 16#16b0;
crc16tab(188) -> 16#6657;
crc16tab(189) -> 16#7676;
crc16tab(190) -> 16#4615;
crc16tab(191) -> 16#5634;
crc16tab(192) -> 16#d94c;
crc16tab(193) -> 16#c96d;
crc16tab(194) -> 16#f90e;
crc16tab(195) -> 16#e92f;
crc16tab(196) -> 16#99c8;
crc16tab(197) -> 16#89e9;
crc16tab(198) -> 16#b98a;
crc16tab(199) -> 16#a9ab;
crc16tab(200) -> 16#5844;
crc16tab(201) -> 16#4865;
crc16tab(202) -> 16#7806;
crc16tab(203) -> 16#6827;
crc16tab(204) -> 16#18c0;
crc16tab(205) -> 16#08e1;
crc16tab(206) -> 16#3882;
crc16tab(207) -> 16#28a3;
crc16tab(208) -> 16#cb7d;
crc16tab(209) -> 16#db5c;
crc16tab(210) -> 16#eb3f;
crc16tab(211) -> 16#fb1e;
crc16tab(212) -> 16#8bf9;
crc16tab(213) -> 16#9bd8;
crc16tab(214) -> 16#abbb;
crc16tab(215) -> 16#bb9a;
crc16tab(216) -> 16#4a75;
crc16tab(217) -> 16#5a54;
crc16tab(218) -> 16#6a37;
crc16tab(219) -> 16#7a16;
crc16tab(220) -> 16#0af1;
crc16tab(221) -> 16#1ad0;
crc16tab(222) -> 16#2ab3;
crc16tab(223) -> 16#3a92;
crc16tab(224) -> 16#fd2e;
crc16tab(225) -> 16#ed0f;
crc16tab(226) -> 16#dd6c;
crc16tab(227) -> 16#cd4d;
crc16tab(228) -> 16#bdaa;
crc16tab(229) -> 16#ad8b;
crc16tab(230) -> 16#9de8;
crc16tab(231) -> 16#8dc9;
crc16tab(232) -> 16#7c26;
crc16tab(233) -> 16#6c07;
crc16tab(234) -> 16#5c64;
crc16tab(235) -> 16#4c45;
crc16tab(236) -> 16#3ca2;
crc16tab(237) -> 16#2c83;
crc16tab(238) -> 16#1ce0;
crc16tab(239) -> 16#0cc1;
crc16tab(240) -> 16#ef1f;
crc16tab(241) -> 16#ff3e;
crc16tab(242) -> 16#cf5d;
crc16tab(243) -> 16#df7c;
crc16tab(244) -> 16#af9b;
crc16tab(245) -> 16#bfba;
crc16tab(246) -> 16#8fd9;
crc16tab(247) -> 16#9ff8;
crc16tab(248) -> 16#6e17;
crc16tab(249) -> 16#7e36;
crc16tab(250) -> 16#4e55;
crc16tab(251) -> 16#5e74;
crc16tab(252) -> 16#2e93;
crc16tab(253) -> 16#3eb2;
crc16tab(254) -> 16#0ed1;
crc16tab(255) -> 16#1ef0.
-ifdef(TEST).
-include_lib("eunit/include/eunit.hrl").
calculate_test() ->
?assertEqual(261402099958626, calculate("hello")),
?assertEqual(1018436016523, calculate("hola")),
ok.
-endif.
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