Try this. VonGodric Senior Member Posts: 658 Threads: 71 Joined: Sep 2003 10-15-2004, 03:42 PM Here's a challenge for you. To write a program in pure qb(no libs, or call absolute) what would be capable of calculating together big numbers. like: 734634786534345345723423443243265345+321476234234234234223423432434534587612873682716 The whole program should be in one function. Function's prototype should look like this: Code:```declare function answer\$(Number1\$, Number2\$, operation\$) 'Operation\$ should take either "+", "-",  "*" or "/" as input. 'Number1\$, Number2\$ takes numbers what will be calculated 'Answer obviously returns the answer.```to make it easier, no floating point numbers so only integer type. You can send your works to my pm. Rating criterium is. Speed, cleannes of the code, size, comments. Understandability. And you have one week starting tomorrow. So deadline is 26th October 2004. url]http://fbide.sourceforge.net/[/url] oracle Posting Freak Posts: 3,343 Threads: 83 Joined: Mar 2003 10-16-2004, 05:27 AM Neo wrote a library called BIGINT that could calculate integer operations on numbers up to 32,767 characters long. It included +, -, /, *, MOD, ^ and maybe a couple of other ones as well. I modified it to work with decimals for a library I was working on, StatLib, but I never finished it (and it was a bit buggy also). size=9]Oracle QBNZ | GeSHi - Generic Syntax Highlighter for PHP | PHPClasses[/size] VonGodric Senior Member Posts: 658 Threads: 71 Joined: Sep 2003 10-16-2004, 02:31 PM That's cool man. You can send it :wink: url]http://fbide.sourceforge.net/[/url] Z!re Posting Freak Posts: 3,522 Threads: 189 Joined: Dec 2003 10-16-2004, 04:06 PM Unfinished, but I'm too lazy to work on it at the moment. You can assign, and get values back. All the needed routines are there, you just have to put them togheter It an handle up to 128bit numbers. The bottlenecks are Assign64, and Assign128 I might finish it... Looking at the code has made me interessted again Posting the code here anyways [syntax="QBASIC"]'Desc. : 64 and 128bit library for QB4.5/PDS7.1 'Author: Z!re ' ' Opensource, use as you like. ' ' ' UNFINISHED!, But I'm releasing it anyway. ' DEFINT A-Z DECLARE FUNCTION StrPow2\$ (pow AS INTEGER) DECLARE FUNCTION SumPow2\$ (BITString AS STRING) DECLARE FUNCTION BITAdd\$ (bits1 AS STRING, bits2 AS STRING) DECLARE FUNCTION Assign64\$ (number AS STRING) DECLARE FUNCTION Assign128\$ (number AS STRING) DECLARE FUNCTION Value64\$ (number AS STRING) DECLARE FUNCTION Value128\$ (number AS STRING) CLS '64bit : 0 to 18446744073709551615 '128bit: 0 to 340282366920938463463374607431768211455 n64\$ = Assign64("17351465489494849819") 'fat number! =) n128\$ = Assign128("339475349875498572463754397457365471635") 'massive, huge, extreme number! PRINT LEN(n64\$); LEN(n128\$) PRINT n64\$ PRINT n128\$ PRINT BITAdd("111", "1") 'Add bit values togheter PRINT Value64(n64\$) 'get a readable value back PRINT Value128(n128\$) 'get a readable value back PRINT SumPow2("11111111") REM \$DYNAMIC '340 282 366 920 938 463 463 374 607 431 768 211 455 FUNCTION Assign128\$ (number AS STRING) DIM number1 AS STRING number1 = number totlen = LEN(number1) IF totlen > 39 THEN EXIT FUNCTION '<Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹Ã¹\ IF totlen = 39 THEN ' | ref\$ = "340282366920938463463374607431768211455" ' | FOR a = 1 TO 39 ' | m = VAL(MID\$(number1\$, a, 1)) ' \Boundary i = VAL(MID\$(ref\$, a, 1)) ' /checks IF m < i THEN EXIT FOR ' | IF m > i THEN EXIT FUNCTION ' | NEXT ' | END IF '<__________________________/ number2\$ = "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" bitloc = 129 DO number3\$ = "000000000000000000000000000000000000000" bitloc = bitloc - 1 g = VAL(RIGHT\$(number1\$, 1)) IF g MOD 2 THEN MID\$(number2\$, bitloc, 1) = "1" MID\$(number1\$, totlen, 1) = LTRIM\$(RTRIM\$(STR\$(g - 1))) END IF FOR a = 1 TO totlen m! = VAL(MID\$(number1\$, a, 1)) / 2 mul = totlen - a IF INT(m!) < m! THEN mul = mul - 1 m! = m! * 10 END IF m\$ = LTRIM\$(RTRIM\$(STR\$(m!))) FOR b = 1 TO mul m\$ = m\$ + "0" NEXT lm = LEN(m\$) g = 39 - lm FOR b = 1 TO lm g = g + 1 m = VAL(MID\$(number3\$, g, 1)) i = VAL(MID\$(m\$, b, 1)) MID\$(number3\$, g, 1) = LTRIM\$(RTRIM\$(STR\$(m + i))) NEXT NEXT FOR b = 1 TO 39 IF MID\$(number3\$, b, 1) <> "0" THEN EXIT FOR NEXT number1\$ = RIGHT\$(number3\$, 39 - (b - 1)) totlen = LEN(number1\$) LOOP UNTIL bitloc = 1 OR number1\$ = "" OR number1\$ = "0" FOR a = 1 TO 128 STEP 4 b\$ = MID\$(number2\$, a, 4) IF b\$ = "0000" THEN fs\$ = fs\$ + "0" IF b\$ = "0001" THEN fs\$ = fs\$ + "1" IF b\$ = "0010" THEN fs\$ = fs\$ + "2" IF b\$ = "0011" THEN fs\$ = fs\$ + "3" IF b\$ = "0100" THEN fs\$ = fs\$ + "4" IF b\$ = "0101" THEN fs\$ = fs\$ + "5" IF b\$ = "0110" THEN fs\$ = fs\$ + "6" IF b\$ = "0111" THEN fs\$ = fs\$ + "7" IF b\$ = "1000" THEN fs\$ = fs\$ + "8" IF b\$ = "1001" THEN fs\$ = fs\$ + "9" IF b\$ = "1010" THEN fs\$ = fs\$ + "A" IF b\$ = "1011" THEN fs\$ = fs\$ + "B" IF b\$ = "1100" THEN fs\$ = fs\$ + "C" IF b\$ = "1101" THEN fs\$ = fs\$ + "D" IF b\$ = "1110" THEN fs\$ = fs\$ + "E" IF b\$ = "1111" THEN fs\$ = fs\$ + "F" NEXT FOR a = 1 TO 32 STEP 2 rs\$ = rs\$ + CHR\$(VAL("&H" + MID\$(fs\$, a, 2))) NEXT Assign128\$ = CHR\$(135) + CHR\$(128) + rs\$ END FUNCTION '18 446 744 073 709 551 615 FUNCTION Assign64\$ (number AS STRING) DIM number1 AS STRING number1 = number totlen = LEN(number1) IF totlen > 20 THEN EXIT FUNCTION '<Ã¹Ã¹Ã¹\ IF totlen = 20 THEN ' | ref\$ = "18446744073709551615" ' | FOR a = 1 TO 20 ' | m = VAL(MID\$(number1\$, a, 1)) ' \Boundary i = VAL(MID\$(ref\$, a, 1)) ' /checks IF m < i THEN EXIT FOR ' | IF m > i THEN EXIT FUNCTION ' | NEXT ' | END IF '<__________________/ number2\$ = "0000000000000000000000000000000000000000000000000000000000000000" bitloc = 65 DO number3\$ = "00000000000000000000" bitloc = bitloc - 1 g = VAL(RIGHT\$(number1\$, 1)) IF g MOD 2 THEN MID\$(number2\$, bitloc, 1) = "1" MID\$(number1\$, totlen, 1) = LTRIM\$(RTRIM\$(STR\$(g - 1))) END IF FOR a = 1 TO totlen m! = VAL(MID\$(number1\$, a, 1)) / 2 mul = totlen - a IF INT(m!) < m! THEN mul = mul - 1 m! = m! * 10 END IF m\$ = LTRIM\$(RTRIM\$(STR\$(m!))) FOR b = 1 TO mul m\$ = m\$ + "0" NEXT lm = LEN(m\$) g = 20 - lm FOR b = 1 TO lm g = g + 1 m = VAL(MID\$(number3\$, g, 1)) i = VAL(MID\$(m\$, b, 1)) MID\$(number3\$, g, 1) = LTRIM\$(RTRIM\$(STR\$(m + i))) NEXT NEXT FOR b = 1 TO 20 IF MID\$(number3\$, b, 1) <> "0" THEN EXIT FOR NEXT number1\$ = RIGHT\$(number3\$, 20 - (b - 1)) totlen = LEN(number1\$) LOOP UNTIL bitloc = 1 OR number1\$ = "" OR number1\$ = "0" FOR a = 1 TO 64 STEP 4 b\$ = MID\$(number2\$, a, 4) IF b\$ = "0000" THEN fs\$ = fs\$ + "0" IF b\$ = "0001" THEN fs\$ = fs\$ + "1" IF b\$ = "0010" THEN fs\$ = fs\$ + "2" IF b\$ = "0011" THEN fs\$ = fs\$ + "3" IF b\$ = "0100" THEN fs\$ = fs\$ + "4" IF b\$ = "0101" THEN fs\$ = fs\$ + "5" IF b\$ = "0110" THEN fs\$ = fs\$ + "6" IF b\$ = "0111" THEN fs\$ = fs\$ + "7" IF b\$ = "1000" THEN fs\$ = fs\$ + "8" IF b\$ = "1001" THEN fs\$ = fs\$ + "9" IF b\$ = "1010" THEN fs\$ = fs\$ + "A" IF b\$ = "1011" THEN fs\$ = fs\$ + "B" IF b\$ = "1100" THEN fs\$ = fs\$ + "C" IF b\$ = "1101" THEN fs\$ = fs\$ + "D" IF b\$ = "1110" THEN fs\$ = fs\$ + "E" IF b\$ = "1111" THEN fs\$ = fs\$ + "F" NEXT FOR a = 1 TO 16 STEP 2 rs\$ = rs\$ + CHR\$(VAL("&H" + MID\$(fs\$, a, 2))) NEXT Assign64\$ = CHR\$(135) + CHR\$(64) + rs\$ END FUNCTION FUNCTION BITAdd\$ (bits1 AS STRING, bits2 AS STRING) bit\$ = STRING\$(128 - LEN(bits2), 48) + bits2 answer\$ = STRING\$(128 - LEN(bits1), 48) + bits1 FOR a = 128 TO 1 STEP -1 m\$ = MID\$(answer\$, a, 1) i\$ = MID\$(bit\$, a, 1) m = VAL(i\$) + VAL(m\$) IF m THEN IF m = 2 THEN carry\$ = "1" MID\$(answer\$, a, 1) = "0" ELSE carry\$ = "0" MID\$(answer\$, a, 1) = "1" END IF DO IF carry\$ = "1" THEN FOR b = a - 1 TO 1 STEP -1 m\$ = MID\$(answer\$, b, 1) m = VAL(carry\$) + VAL(m\$) IF m THEN IF m = 2 THEN carry\$ = "1" MID\$(answer\$, b, 1) = "0" ELSE carry\$ = "0" MID\$(answer\$, b, 1) = "1" END IF END IF IF carry\$ = "0" THEN EXIT FOR NEXT END IF LOOP UNTIL carry\$ = "0" END IF NEXT FOR a = 1 TO 128 IF MID\$(answer\$, a, 1) <> "0" THEN EXIT FOR NEXT IF answer\$ = STRING\$(128, 48) THEN a = 128 BITAdd\$ = RIGHT\$(answer\$, 129 - a) END FUNCTION FUNCTION StrPow2\$ (pow AS INTEGER) IF pow < 16 THEN IF pow = 0 THEN StrPow2\$ = "1": EXIT FUNCTION IF pow = 1 THEN StrPow2\$ = "2": EXIT FUNCTION IF pow = 2 THEN StrPow2\$ = "4": EXIT FUNCTION IF pow = 3 THEN StrPow2\$ = "8": EXIT FUNCTION IF pow = 4 THEN StrPow2\$ = "16": EXIT FUNCTION IF pow = 5 THEN StrPow2\$ = "32": EXIT FUNCTION IF pow = 6 THEN StrPow2\$ = "64": EXIT FUNCTION IF pow = 7 THEN StrPow2\$ = "128": EXIT FUNCTION IF pow = 8 THEN StrPow2\$ = "256": EXIT FUNCTION IF pow = 9 THEN StrPow2\$ = "512": EXIT FUNCTION IF pow = 10 THEN StrPow2\$ = "1024": EXIT FUNCTION IF pow = 11 THEN StrPow2\$ = "2048": EXIT FUNCTION IF pow = 12 THEN StrPow2\$ = "4096": EXIT FUNCTION IF pow = 13 THEN StrPow2\$ = "8192": EXIT FUNCTION IF pow = 14 THEN StrPow2\$ = "16384": EXIT FUNCTION IF pow = 15 THEN StrPow2\$ = "32768": EXIT FUNCTION ELSEIF pow < 32 THEN IF pow = 16 THEN StrPow2\$ = "65536": EXIT FUNCTION IF pow = 17 THEN StrPow2\$ = "131072": EXIT FUNCTION IF pow = 18 THEN StrPow2\$ = "262144": EXIT FUNCTION IF pow = 19 THEN StrPow2\$ = "524288": EXIT FUNCTION IF pow = 20 THEN StrPow2\$ = "1048576": EXIT FUNCTION IF pow = 21 THEN StrPow2\$ = "2097152": EXIT FUNCTION IF pow = 22 THEN StrPow2\$ = "4194304": EXIT FUNCTION IF pow = 23 THEN StrPow2\$ = "8388608": EXIT FUNCTION IF pow = 24 THEN StrPow2\$ = "16777216": EXIT FUNCTION IF pow = 25 THEN StrPow2\$ = "33554432": EXIT FUNCTION IF pow = 26 THEN StrPow2\$ = "67108864": EXIT FUNCTION IF pow = 27 THEN StrPow2\$ = "134217728": EXIT FUNCTION IF pow = 28 THEN StrPow2\$ = "268435456": EXIT FUNCTION IF pow = 29 THEN StrPow2\$ = "536870912": EXIT FUNCTION IF pow = 30 THEN StrPow2\$ = "1073741824": EXIT FUNCTION IF pow = 31 THEN StrPow2\$ = "2147483648": EXIT FUNCTION ELSEIF pow < 48 THEN IF pow = 32 THEN StrPow2\$ = "4294967296": EXIT FUNCTION IF pow = 33 THEN StrPow2\$ = "8589934592": EXIT FUNCTION IF pow = 34 THEN StrPow2\$ = "17179869184": EXIT FUNCTION IF pow = 35 THEN StrPow2\$ = "34359738368": EXIT FUNCTION IF pow = 36 THEN StrPow2\$ = "68719476736": EXIT FUNCTION IF pow = 37 THEN StrPow2\$ = "137438953472": EXIT FUNCTION IF pow = 38 THEN StrPow2\$ = "274877906944": EXIT FUNCTION IF pow = 39 THEN StrPow2\$ = "549755813888": EXIT FUNCTION IF pow = 40 THEN StrPow2\$ = "1099511627776": EXIT FUNCTION IF pow = 41 THEN StrPow2\$ = "2199023255552": EXIT FUNCTION IF pow = 42 THEN StrPow2\$ = "4398046511104": EXIT FUNCTION IF pow = 43 THEN StrPow2\$ = "8796093022208": EXIT FUNCTION IF pow = 44 THEN StrPow2\$ = "17592186044416": EXIT FUNCTION IF pow = 45 THEN StrPow2\$ = "35184372088832": EXIT FUNCTION IF pow = 46 THEN StrPow2\$ = "70368744177664": EXIT FUNCTION IF pow = 47 THEN StrPow2\$ = "140737488355328": EXIT FUNCTION ELSEIF pow < 64 THEN IF pow = 48 THEN StrPow2\$ = "281474976710656": EXIT FUNCTION IF pow = 49 THEN StrPow2\$ = "562949953421312": EXIT FUNCTION IF pow = 50 THEN StrPow2\$ = "1125899906842624": EXIT FUNCTION IF pow = 51 THEN StrPow2\$ = "2251799813685248": EXIT FUNCTION IF pow = 52 THEN StrPow2\$ = "4503599627370496": EXIT FUNCTION IF pow = 53 THEN StrPow2\$ = "9007199254740992": EXIT FUNCTION IF pow = 54 THEN StrPow2\$ = "18014398509481984": EXIT FUNCTION IF pow = 55 THEN StrPow2\$ = "36028797018963968": EXIT FUNCTION IF pow = 56 THEN StrPow2\$ = "72057594037927936": EXIT FUNCTION IF pow = 57 THEN StrPow2\$ = "144115188075855872": EXIT FUNCTION IF pow = 58 THEN StrPow2\$ = "288230376151711744": EXIT FUNCTION IF pow = 59 THEN StrPow2\$ = "576460752303423488": EXIT FUNCTION IF pow = 60 THEN StrPow2\$ = "1152921504606846976": EXIT FUNCTION IF pow = 61 THEN StrPow2\$ = "2305843009213693952": EXIT FUNCTION IF pow = 62 THEN StrPow2\$ = "4611686018427387904": EXIT FUNCTION IF pow = 63 THEN StrPow2\$ = "9223372036854775808": EXIT FUNCTION ELSEIF pow < 80 THEN IF pow = 64 THEN StrPow2\$ = "18446744073709551616": EXIT FUNCTION IF pow = 65 THEN StrPow2\$ = "36893488147419103232": EXIT FUNCTION IF pow = 66 THEN StrPow2\$ = "73786976294838206464": EXIT FUNCTION IF pow = 67 THEN StrPow2\$ = "147573952589676412928": EXIT FUNCTION IF pow = 68 THEN StrPow2\$ = "295147905179352825856": EXIT FUNCTION IF pow = 69 THEN StrPow2\$ = "590295810358705651712": EXIT FUNCTION IF pow = 70 THEN StrPow2\$ = "1180591620717411303424": EXIT FUNCTION IF pow = 71 THEN StrPow2\$ = "2361183241434822606848": EXIT FUNCTION IF pow = 72 THEN StrPow2\$ = "4722366482869645213696": EXIT FUNCTION IF pow = 73 THEN StrPow2\$ = "9444732965739290427392": EXIT FUNCTION IF pow = 74 THEN StrPow2\$ = "18889465931478580854784": EXIT FUNCTION IF pow = 75 THEN StrPow2\$ = "37778931862957161709568": EXIT FUNCTION IF pow = 76 THEN StrPow2\$ = "75557863725914323419136": EXIT FUNCTION IF pow = 77 THEN StrPow2\$ = "151115727451828646838272": EXIT FUNCTION IF pow = 78 THEN StrPow2\$ = "302231454903657293676544": EXIT FUNCTION IF pow = 79 THEN StrPow2\$ = "604462909807314587353088": EXIT FUNCTION ELSEIF pow < 96 THEN IF pow = 80 THEN StrPow2\$ = "1208925819614629174706176": EXIT FUNCTION IF pow = 81 THEN StrPow2\$ = "2417851639229258349412352": EXIT FUNCTION IF pow = 82 THEN StrPow2\$ = "4835703278458516698824704": EXIT FUNCTION IF pow = 83 THEN StrPow2\$ = "9671406556917033397649408": EXIT FUNCTION IF pow = 84 THEN StrPow2\$ = "19342813113834066795298816": EXIT FUNCTION IF pow = 85 THEN StrPow2\$ = "38685626227668133590597632": EXIT FUNCTION IF pow = 86 THEN StrPow2\$ = "77371252455336267181195264": EXIT FUNCTION IF pow = 87 THEN StrPow2\$ = "154742504910672534362390528": EXIT FUNCTION IF pow = 88 THEN StrPow2\$ = "309485009821345068724781056": EXIT FUNCTION IF pow = 89 THEN StrPow2\$ = "618970019642690137449562112": EXIT FUNCTION IF pow = 90 THEN StrPow2\$ = "1237940039285380274899124224": EXIT FUNCTION IF pow = 91 THEN StrPow2\$ = "2475880078570760549798248448": EXIT FUNCTION IF pow = 92 THEN StrPow2\$ = "4951760157141521099596496896": EXIT FUNCTION IF pow = 93 THEN StrPow2\$ = "9903520314283042199192993792": EXIT FUNCTION IF pow = 94 THEN StrPow2\$ = "19807040628566084398385987584": EXIT FUNCTION IF pow = 95 THEN StrPow2\$ = "39614081257132168796771975168": EXIT FUNCTION ELSEIF pow < 112 THEN IF pow = 96 THEN StrPow2\$ = "79228162514264337593543950336": EXIT FUNCTION IF pow = 97 THEN StrPow2\$ = "158456325028528675187087900672": EXIT FUNCTION IF pow = 98 THEN StrPow2\$ = "316912650057057350374175801344": EXIT FUNCTION IF pow = 99 THEN StrPow2\$ = "633825300114114700748351602688": EXIT FUNCTION IF pow = 100 THEN StrPow2\$ = "1267650600228229401496703205376": EXIT FUNCTION IF pow = 101 THEN StrPow2\$ = "2535301200456458802993406410752": EXIT FUNCTION IF pow = 102 THEN StrPow2\$ = "5070602400912917605986812821504": EXIT FUNCTION IF pow = 103 THEN StrPow2\$ = "10141204801825835211973625643008": EXIT FUNCTION IF pow = 104 THEN StrPow2\$ = "20282409603651670423947251286016": EXIT FUNCTION IF pow = 105 THEN StrPow2\$ = "40564819207303340847894502572032": EXIT FUNCTION IF pow = 106 THEN StrPow2\$ = "81129638414606681695789005144064": EXIT FUNCTION IF pow = 107 THEN StrPow2\$ = "162259276829213363391578010288128": EXIT FUNCTION IF pow = 108 THEN StrPow2\$ = "324518553658426726783156020576256": EXIT FUNCTION IF pow = 109 THEN StrPow2\$ = "649037107316853453566312041152512": EXIT FUNCTION IF pow = 110 THEN StrPow2\$ = "1298074214633706907132624082305024": EXIT FUNCTION IF pow = 111 THEN StrPow2\$ = "2596148429267413814265248164610048": EXIT FUNCTION ELSEIF pow < 128 THEN IF pow = 112 THEN StrPow2\$ = "5192296858534827628530496329220096": EXIT FUNCTION IF pow = 113 THEN StrPow2\$ = "10384593717069655257060992658440192": EXIT FUNCTION IF pow = 114 THEN StrPow2\$ = "20769187434139310514121985316880384": EXIT FUNCTION IF pow = 115 THEN StrPow2\$ = "41538374868278621028243970633760768": EXIT FUNCTION IF pow = 116 THEN StrPow2\$ = "83076749736557242056487941267521536": EXIT FUNCTION IF pow = 117 THEN StrPow2\$ = "166153499473114484112975882535043072": EXIT FUNCTION IF pow = 118 THEN StrPow2\$ = "332306998946228968225951765070086144": EXIT FUNCTION IF pow = 119 THEN StrPow2\$ = "664613997892457936451903530140172288": EXIT FUNCTION IF pow = 120 THEN StrPow2\$ = "1329227995784915872903807060280344576": EXIT FUNCTION IF pow = 121 THEN StrPow2\$ = "2658455991569831745807614120560689152": EXIT FUNCTION IF pow = 122 THEN StrPow2\$ = "5316911983139663491615228241121378304": EXIT FUNCTION IF pow = 123 THEN StrPow2\$ = "10633823966279326983230456482242756608": EXIT FUNCTION IF pow = 124 THEN StrPow2\$ = "21267647932558653966460912964485513216": EXIT FUNCTION IF pow = 125 THEN StrPow2\$ = "42535295865117307932921825928971026432": EXIT FUNCTION IF pow = 126 THEN StrPow2\$ = "85070591730234615865843651857942052864": EXIT FUNCTION IF pow = 127 THEN StrPow2\$ = "170141183460469231731687303715884105728": EXIT FUNCTION END IF END FUNCTION FUNCTION SumPow2\$ (BITString AS STRING) l = LEN(BITString) IF l > 128 THEN EXIT FUNCTION 'OVERFLOW! FOR a = 1 TO l f\$ = MID\$(BITString, a, 1) IF f\$ <> "0" AND f\$ <> "1" THEN EXIT FUNCTION 'INVALID NEXT rs\$ = STRING\$(128 - LEN(BITString), 48) + BITString os\$ = "000000000000000000000000000000000000000" carry1\$ = "000000000000000000000000000000000000000" FOR a = 127 TO 0 STEP -1 g\$ = MID\$(rs\$, 128 - a, 1) IF g\$ = "1" THEN ns\$ = StrPow2(a) l = LEN(ns\$) l20 = 39 - l ns\$ = STRING\$(l20, 48) + ns\$ FOR b = 39 TO 1 STEP -1 m = VAL(MID\$(ns\$, b, 1)) i = VAL(MID\$(os\$, b, 1)) g\$ = LTRIM\$(RTRIM\$(STR\$(m + i))) IF LEN(g\$) > 1 THEN IF b = 1 THEN EXIT FUNCTION 'OVERFLOW!!!!! MID\$(carry1\$, b - 1, 1) = LEFT\$(g\$, 1) g\$ = RIGHT\$(g\$, 1) END IF MID\$(os\$, b, 1) = g\$ NEXT DO IF carry1\$ <> "000000000000000000000000000000000000000" THEN carry2\$ = "000000000000000000000000000000000000000" FOR b = 39 TO 1 STEP -1 m = VAL(MID\$(carry1\$, b, 1)) i = VAL(MID\$(os\$, b, 1)) g\$ = LTRIM\$(RTRIM\$(STR\$(m + i))) IF LEN(g\$) > 1 THEN IF b = 1 THEN EXIT FUNCTION 'OVERFLOW!!!!! MID\$(carry2\$, b - 1, 1) = LEFT\$(g\$, 1) g\$ = RIGHT\$(g\$, 1) END IF MID\$(os\$, b, 1) = g\$ NEXT carry1\$ = carry2\$ END IF LOOP UNTIL carry1\$ = "000000000000000000000000000000000000000" END IF NEXT FOR a = 1 TO 39 IF MID\$(os\$, a, 1) <> "0" THEN EXIT FOR NEXT IF os\$ = "000000000000000000000000000000000000000" THEN a = 39 SumPow2\$ = RIGHT\$(os\$, 40 - a) END FUNCTION FUNCTION Value128\$ (number AS STRING) IF LEN(number) <> 18 THEN EXIT FUNCTION IF LEFT\$(number, 2) <> CHR\$(135) + CHR\$(128) THEN EXIT FUNCTION number1\$ = RIGHT\$(number, 16) FOR a = 1 TO 16 m\$ = HEX\$(ASC(MID\$(number1\$, a, 1))) m\$ = STRING\$(2 - LEN(m\$), 48) + m\$ fs\$ = fs\$ + m\$ NEXT FOR a = 1 TO 32 g\$ = MID\$(fs\$, a, 1) IF g\$ = "0" THEN rs\$ = rs\$ + "0000" IF g\$ = "1" THEN rs\$ = rs\$ + "0001" IF g\$ = "2" THEN rs\$ = rs\$ + "0010" IF g\$ = "3" THEN rs\$ = rs\$ + "0011" IF g\$ = "4" THEN rs\$ = rs\$ + "0100" IF g\$ = "5" THEN rs\$ = rs\$ + "0101" IF g\$ = "6" THEN rs\$ = rs\$ + "0110" IF g\$ = "7" THEN rs\$ = rs\$ + "0111" IF g\$ = "8" THEN rs\$ = rs\$ + "1000" IF g\$ = "9" THEN rs\$ = rs\$ + "1001" IF g\$ = "A" THEN rs\$ = rs\$ + "1010" IF g\$ = "B" THEN rs\$ = rs\$ + "1011" IF g\$ = "C" THEN rs\$ = rs\$ + "1100" IF g\$ = "D" THEN rs\$ = rs\$ + "1101" IF g\$ = "E" THEN rs\$ = rs\$ + "1110" IF g\$ = "F" THEN rs\$ = rs\$ + "1111" NEXT Value128\$ = SumPow2(rs\$) END FUNCTION FUNCTION Value64\$ (number AS STRING) IF LEN(number) <> 10 THEN EXIT FUNCTION IF LEFT\$(number, 2) <> CHR\$(135) + CHR\$(64) THEN EXIT FUNCTION number1\$ = RIGHT\$(number, 8) FOR a = 1 TO 8 m\$ = HEX\$(ASC(MID\$(number1\$, a, 1))) m\$ = STRING\$(2 - LEN(m\$), 48) + m\$ fs\$ = fs\$ + m\$ NEXT FOR a = 1 TO 16 g\$ = MID\$(fs\$, a, 1) IF g\$ = "0" THEN rs\$ = rs\$ + "0000" IF g\$ = "1" THEN rs\$ = rs\$ + "0001" IF g\$ = "2" THEN rs\$ = rs\$ + "0010" IF g\$ = "3" THEN rs\$ = rs\$ + "0011" IF g\$ = "4" THEN rs\$ = rs\$ + "0100" IF g\$ = "5" THEN rs\$ = rs\$ + "0101" IF g\$ = "6" THEN rs\$ = rs\$ + "0110" IF g\$ = "7" THEN rs\$ = rs\$ + "0111" IF g\$ = "8" THEN rs\$ = rs\$ + "1000" IF g\$ = "9" THEN rs\$ = rs\$ + "1001" IF g\$ = "A" THEN rs\$ = rs\$ + "1010" IF g\$ = "B" THEN rs\$ = rs\$ + "1011" IF g\$ = "C" THEN rs\$ = rs\$ + "1100" IF g\$ = "D" THEN rs\$ = rs\$ + "1101" IF g\$ = "E" THEN rs\$ = rs\$ + "1110" IF g\$ = "F" THEN rs\$ = rs\$ + "1111" NEXT Value64\$ = SumPow2(rs\$) END FUNCTION[/syntax] Nexinarus Senior Member Posts: 294 Threads: 9 Joined: Oct 2002 10-17-2004, 02:01 AM Heres mine. It can calculate + and *, the only limit is the numbers must be positive integers, and probably have 32kb's of digits in length max. Im pretty sure it all works. [syntax="QBASIC"]'BigMath v0.1 by Nexinarus 'Date created: 17th October 2004 'Can handle addition and multiplication of positive integers 'of around 32000 digits in length I guess 'To add 2+2: print answer("2", "2", +") DECLARE FUNCTION answer\$ (n1 AS STRING, n2 AS STRING, op AS STRING) DEFINT A-Z DIM a AS STRING, b AS STRING CLS a = "734634786534345345723423443243265345" b = "321476234234234234223423432434534587612873682716" PRINT "a + b = " PRINT answer(a, b, "+") PRINT "a * b = " PRINT answer(a, b, "*") FUNCTION answer\$ (n1 AS STRING, n2 AS STRING, op AS STRING) DIM ans AS STRING, n3 AS STRING l1 = LEN(n1) l2 = LEN(n2) maxl = l1 IF l2 > maxl THEN maxl = l2 IF op\$ = "+" THEN s1 = l1 s2 = l2 FOR i = 0 TO maxl IF s1 > 0 THEN d1 = VAL(MID\$(n1, s1, 1)) ELSE d1 = 0 END IF IF s2 > 0 THEN d2 = VAL(MID\$(n2, s2, 1)) ELSE d2 = 0 END IF IF (s1 > 0) OR (s2 > 0) OR (tens > 0) THEN add = d1 + d2 + tens tens = 0 IF add > 9 THEN tens = add \ 10 add = add MOD 10 END IF ans = LTRIM\$(STR\$(add)) + ans END IF s1 = s1 - 1 s2 = s2 - 1 NEXT ELSEIF op = "*" THEN ans = "0" n3 = "0" s1 = l1 FOR i = 0 TO l1 - 1 IF s1 > 0 THEN d1 = VAL(MID\$(n1, s1, 1)) ELSE d1 = 0 END IF s2 = l2 n3 = "" j = 0 DO IF s2 > 0 THEN d2 = VAL(MID\$(n2, s2, 1)) ELSE d2 = 0 END IF mul = d1 * d2 + tens tens = 0 IF mul > 9 THEN tens = mul \ 10 mul = mul MOD 10 END IF n3 = LTRIM\$(STR\$(mul)) + n3 s2 = s2 - 1 j = j + 1 LOOP UNTIL (j >= l2) AND (tens = 0) n3 = n3 + STRING\$(i, "0") ans = answer(ans, n3, "+") s1 = s1 - 1 NEXT ELSE PRINT "error: unknown operator!" END END IF answer = ans END FUNCTION[/syntax] Neo Posting Freak Posts: 1,845 Threads: 44 Joined: Aug 2002 10-25-2004, 12:58 AM Click here to go to Pete's QB Site's Library Downloads, which also includes BIGINT. (Please don't mind the rating, some one rated all program in the downloads a 1). « Next Oldest | Next Newest »