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Text of the page (random words):
e this template message ubasic ubasic 32 bit english version original author s yuji kida initial release before 2005 operating system dos microsoft windows type basic license freeware public domain without source code ubasic is a freeware public domain software without source code basic interpreter written by yuji kida at rikkyo university in japan specialized for mathematical computing contents 1 features 2 sample program 3 accuracy 4 main traits 5 see also 6 references 7 external links features edit ubasic is a ready to run language that does not need to be set up with another advanced language which is a common problem with multi digit math languages it runs in dos or in a dos box under dos shell microsoft windows etc it is specialized for number theory primality testing factoring and large integers up to 2600 digits being an implementation of basic makes it easy to read programs without having to do extensive study as basic is a language that has a structure and syntax close to ordinary algebra the help files have articles and lessons for beginners ubasic has a built in on line editor with several aids for debugging it can show cross references to calling lines lines containing a variable and lists of variables arrays it can renumber lines change variable names and append additional programs it can trace single step and time by milliseconds to help determine the fastest way to do highly repetitive sections it can redefine function keys either to provide an easy one keypress function or to prevent a standard function from being accidentally used when it shouldn t it can shell to dos or execute a dos command it can convert between single byte character set and double byte character set but to have much use for this the host computer would likely need an aware operating system documents may be added to or modified in ubhelp hlp primality testing with aprt cle to 884 digits it is best to run this under ubasic version 8 8f or later 500 digits said to take 5 hours on a pp 200 150 digits takes about 16 minutes on a 486 100 about 2¼ minutes on a k6 233 250 digits takes about 13½ minutes on a k6 233 recent machines can be up to 10 times faster aprt cle is often the algorithm of choice for testing primality of integers within its range factoring with programs such as ecmx is quite fast it can find factors with the number of digits in the low 20s fairly easily mid 20s somewhat less easily and upper 20s with lower chance of success it has found a 30 digit factor finding factors with the elliptic curve method is always chancy for larger factors the greater the number of curves that are tested the greater the chances of success but the number needed on average one can sometimes get lucky or unlucky increases rapidly with the size of factors it is always best to use the fastest machine available ecmx uses the accepted standards for limits of when to stop working with one curve and switch to the next it has preliminary primality testing finding small factors and powers being interpreted allows modifying programs and then restarting using goto in the middle of a run even multi day without losing accumulated data stopping is not recommended unless a program has been saving the data safely somewhere or if users forgot to write any way to save data when quitting perhaps they did not expect to find any and were trying to prove it when doing anything that might lose valuable data or if you need to do something else for a time then you can freeze the current program to a file and later melt it as long as the lower memory configuration is the same ubasic has line numbers it does not use indentation to control structure it has subroutines and user functions with passed parameters and local variables parameters can be passed by value or by name user functions and subroutines may be passed as parameters it has limited labels it has various options for conditional functions users can indent as much as needed or not at all and can have as much structure as wanted or spaghetti code it is a mistake to consider ubasic as not modern as might be inferred by a reader of articles that confuse indentation with structure and don t favor line numbers having line numbers allows easy jumping to an intermediate point in a routine which can sometimes save duplicating lines ubasic version 8 has the high precision real and complex arithmetic up to 2600 digits of prior versions and adds exact rational arithmetic and arithmetic of single variable polynomials with complex rational or modulo p coefficients as well as string handling and limited list handling abilities in also has context sensitive on line documentation read ubhelp doc for information the file that this uses is ascii and can be printed for a paper document as of 2005 the help file had many errors a ten year project to rewrite correct was nearly ready for publication probably by late summer 2005 the new help file has a new extension hlp and eventually package name u3d748f a list of updates is available but many changes remain unreported version 8 8 has different precision than 8 74 there are still some commands that have no documentation school keyscan modmul there is a new command from version 8 8c polyconv that converts polynomials between modulus 0 and modulus prime there are no formatting specifications warning never test out any of these when while anything important is or might be running or suspended somewhere else as lockups may be expected particularly for keyscan see freeze roll melt for similar warning ubasic has several types of arrays logical operators bit operators 4 standard loop structures and combined operators it can call machine language routines for increased speed ecmx does this but you must know assembly language to even understand the instructions just being able to write tsr s in debug is not enough string values can be computed if it represents a math formula strings can usually be executed if it represents a ubasic command variables holding strings may usually be substituted for the strings strings can be alphabetized using min or max ubasic can be used to process almost any kind of data for example wav files it can process text files to convert tabs to spaces or spaces to tabs some programs can not generate tabs and some actually choke on them variable types include 1 integer 2 rational 3 real 4 complex number 5 string 6 packet mixed from any types including other packets 7 polynomial 8 mod polynomial coefficients integers modulo a prime an early 2005 internet search turned up versions 8 74 32 8 74 16 8 71 4000 16 9 0ze 9 0zc 9 0e 8 8f 32 8 8f 16 8 8f c 8 7e 32 8 7e 16 8 30 32 8 30 16 7 25 32 7 25 16 8 8a 32 8 8a 16 8 8a c 8 8c 32 8 8c 16 8 8c c 8 8e 32 8 8e 16 8 8e c 12 versions out of 52 known numbers many of these are not directly identified the 16 and 32 refer to the number of bits in the multiplication engine 4000 refers to special versions that can go up to over 4000 digits some users may need one of these such as to generate the first 792 bernoulli numbers to double index 1584 the latest version can only get 540 1080 the c is for cga machines the versions in italics are not recommended most users would only need 8 8f if you are already using a version later than 8 74 and especially if you are using a version later than 8 7e then you are strongly advised to switch to the latest version 8 8f some programs fancy display for example written for 8 74 may not work in 8 8f without considerable rewriting the latest versions do not strip carriage returns line feeds from ascii files and programs such as ubh even the one in 8 8f need added lines to strip them any program written for one version should not be used in another version without checking certain programs such as nfs will only run on experimental version 9 the ppmpx36e version of the multi polynomial quadratic sieve needs 8 8f and windows some versions of ubasic came with a defective ubconst7 dat file you should check yours against the one supplied in 8 8f if it is not identical then you should switch ubasic is available for 1 ibm pc at and compatibles 2 nec pc 9801 3 nec pc h98 4 fujitsu fm r 5 toshiba j 3100 6 ax 7 dos v for obtaining the latest version of ubasic see external links sections many internet math pages have the language packages on their own sites ubasic was written by prof yuji kida department of mathematics rikkyo university nishi ikebukuro 3 tokyo 171 japan e mail kida rkmath rikkyo ac jp sample program edit the following is a short simple program for the partition count function although it doesn t have many of the fancier structures it is a real program not invented for this article on a modern fast athlon it should calculate the partition counts from p 0 to p 1000 in about ½ second contrast that to over ½ century the first time through to save the result to a file uncomment line 40 remove leading apostrophe 10 console console 1 24 0 locate 1 0 20 print chr 2 n p n partition count 30 word 19 point 8 h 11 for n up to 1200 40 print print partn5 txt output redirect 50 n 0 input n 60 clr time 70 mu pi sqrt 24 n 1 6 80 clr s 90 for k 1 to h 100 110 to 160 is selberg formula 110 clr c 120 for l 0 to 2 k 1 130 if 3 l 2 l 2 k n k 140 c 1 l cos pi 6 l 1 6 k 150 next 160 to get a k n multiply c by sqrt k 3 170 u exp mu k 180 r mu k u rademacher s convergence term 190 s mu k u r c 200 next 210 s round abs s 2 mu 24 n 1 220 print cutspc str n 230 locate 38 alen s print s 240 if n 1000 inc n goto 70 250 tt time1000 print print print tt 1000 260 1 7 faster if n k l changed to n k l accuracy edit when working with continued fractions the number of terms is limited by the available accuracy and by the size of each term an approximate formula is 2 decimal fraction digit accuracy for each term times the base ten logarithm of the term the only way to do such work safely is to do it twice in parallel with the initial input to one dithered in the final several digits at least 1 word then when the two calculations do not give identical terms stop at the previous term ubasic can calculate the partition function to over p 1330521 in 8 74 up to p 1361911 and the 4000 digit versions should get many more main traits edit strong emphasis on number theory has ready made application programs such as primality test factoring bernoulli numbers zeta function etc versions from 8 74 have graphics can work with numbers up to 2600 digits bignums but with functions and complex numbers the digit limit is less has on line context sensitive help see also edit basic list of basic dialects by platform lenstra elliptic curve factorization complex numbers prime number jørgen pedersen gram logarithmic integral function prime gaps integrated development environment references edit notes essential features consists of the following the near repdigit primes a n b ab n and ubasic caldwell chris k journal of recreational mathematics vol 22 2 101 109 1990 ubasic a public domain basic for mathematics neumann walter d notices of the american mathematical society may june 1989 volume 36 number 5 p 557 559 ubasic update neumann walter d notices of the american mathematical society march 1991 volume 38 number 3 p 196 197 2 and 3 are somewhat old and mr neumann says public domain when he should say freeware without source code external links edit in french ubasic 9 0w homepage in japanese ubasic86 catalogue by ykida vector in japanese ubasic homepage 3 3 2014 english ubasic homepage 18 2 2009 ubasic simtelnet last update 25 06 1998 non defective version 8 74 professor yuji kida last updated apr 4 2014 at 09 58 ubasic 7 october 2000 the final version 8 8f in english link retrieved on 17 september 2017 ubasic manual pdf with copy enabled last correction on 22 july 2006 in japanese last waybackmachine archived page on 22 july 2011 link retrieved on 17 september 2017 v t e dialects of the basic programming language list classic atari atari basic atari st basic basic programming atari 2600 microsoft altair basic applesoft basic atari microsoft basic color basic commodore basic disk extended color basic extended color basic gw basic ibm basic mbasic microsoft basic ms basic for macintosh msx basic trs 80 basics level i level ii iii thomson basic 1 0 texas instruments ti basic ti 99 4a ti basic calculators ti extended basic aka xbasic ti basic 83 hewlett packard hp time shared basic rocky mountain basic locomotive software locomotive basic mallard basic optimized systems software basic a basic xe basic xl microcomputers atom basic integer basic jr basic north star basic sinclair basic s basic southampton basic system scelbal vilnius basic minicomputers basic 11 business basic b32 data general data general extended basic wang basic time sharing computers basic plus vsi basic for openvms dartmouth basic super basic call 360 basic other alphabasic basicode bal casio basic cbasic chinese basic family basic macbasic pbasic sds basic stos basic tiny basic turbo basic xl ubasic zbasic etbasic zh extenders basic 8 graphics basic simons basic super expander super expander 64 ys megabasic procedure oriented proprietary amigabasic amos basic asic basicx bbc basic beta basic futurebasic gfa basic grass liberty basic lse mapbasic mobile basic owbasic powerbasic purebasic qbasic quickbasic superbasic smilebasic thinbasic tiger basic true basic turbo basic wordbasic free and open source basic 256 basic4gl darkbasic euphoria indic basic open programming language sdlbasic smallbasic qb64 wxbasic xbasic xblite yabasic with object extensions proprietary autoit chipmunk basic glbasic lotusscript morfik powerbasic providex run basic vba vbscript vb 5 for microsoft excel 5 0 vsto vsta embedded visual basic winwrap basic free and open source blitzmax freebasic microsoft small basic mono basic openoffice basic scriptbasic roslyn rad designers proprietary ca realizer visual basic classic ns basic phoenix object basic rapidq visual basic net xojo free and open source basic for qt b4x basic4android basic4ppc gambas hbasic winfbe visual fb editor retrieved from https en wikipedia org w index php title ubasic oldid 1049311000 categories basic interpreters programming languages created in the 1980s japanese inventions public domain software basic programming language family hidden categories articles needing cleanup from august 2012 all pages needing cleanup cleanup tagged articles with a reason field from august 2012 wikipedia pages needing cleanup from august 2012 articles lacking in text citations from october 2020 all articles lacking in text citations articles with multiple maintenance issues articles with french language sources fr articles with japanese language sources ja articles with example basic code navigation menu personal tools not logged in talk contributions create account log in namespaces article talk english views read edit view history more search navigation main page contents current events random article about wikipedia contact us donate 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