Apologies for the delayed reply. In F# 1.1.12 the concrete type for BigInt lives at Microsoft.FSharp.Math.Types.BigInt. If you open Microsoft.FSharp.Math.Types you should get a lot further, or at least make a type alias
1
using bigint = Microsoft.FSharp.Math.Types.BigInt
In F# 1.1.13 the concrete type definition will actually be moving to Microsoft.FSharp.Math as part of a general library cleanup and rationalization. So you went looking in the right place, it's just not there yet :-) But you can always find out the concrete canonical type name using the documentation at [link:research.microsoft.com] etc.
Don
Thank you Don!
The following works now. Is there a more efficient way to
interface to FSharps' BigInts?
--------------------------------------------------------------
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
using System; using Bigint = Microsoft.FSharp.Math.Types.BigInt; using Bignat = Microsoft.FSharp.Primitives.BigNat.BigNat; namespace SharpFool { class Program { static Bigint makeBigint(int n) { Bignat bn = new Bignat(1, new object[] { Math.Abs(n) }); Bigint bi = new Bigint(Math.Sign(n), bn); return bi; } static Bigint Factorial(int n) { if (n < 0) { throw new System.ArgumentException( ": n >= 0 required, but was " + n); } Bigint nFact = makeBigint(1); for (int i = 2; i <= n; i++) { nFact *= makeBigint(i); } return nFact; } static void Main(string[] args) { Bigint f = Factorial(32); Bigint g = Factorial(16); Console.WriteLine(f); Console.WriteLine(f / g); Console.ReadLine(); } } }
--------------------------------------------------------------
I still have a problem. What is the right way to
convert longs to BigInts? I tried
1 2 3 4 5 6
static Bigint makeBigint(long n) { Bignat bn = new Bignat(1, new object[] { Math.Abs(n) }); Bigint bi = new Bigint(Math.Sign(n), bn); return bi; }
However, executing
1 2 3
Bigint x = makeBigint(14L); Bigint y = makeBigint(long.MaxValue - 22L); x = x + y;
gives me an InvalidCastException.
Thanks again.
This is an update which reflects the changes and enhancements of F# 1.1.13 in relation to my question.
Here the test case as it works now:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
using System; using BigInt = Microsoft.FSharp.Math.BigInt; using BigMath = Microsoft.FSharp.Math.BigIntModule; namespace SharpFool { public class UsingBigIntWithCsharp { static BigInt Factorial(int n) { if (n < 0) { throw new System.ArgumentException( "n >= 0 required, but was " + n ); } BigInt nFact = BigMath.one; for (int i = 2; i <= n; i++) { nFact *= BigMath.of_int(i); } return nFact; } static void Main(string[] args) { BigInt f = Factorial(132), g = Factorial(71); Console.WriteLine(f / g); Console.WriteLine( BigMath.factorial(BigMath.of_int(132)) / BigMath.factorial(BigMath.of_int(71)) ); Console.ReadLine(); } } }
Nice! Thanks for taking the time to post an update.
Well, there is a keen competition, and I read today the following announcement for the Microsoft pre-release software "Orcas" - January 2007 CTP.
"A new numeric type that provides support for very large numbers.
This is the first type that supports arbitrary range and will extend
to accommodate any large number as needed. This type lives in the
new System.Numeric namespace where all new numeric and arithmetic
features are going to reside. It supports all the basic arithmetic
operations including things like Pow, DivRem and GreatestCommonDivisor.
It implements the following interfaces: IFormattable, IComparable,
IComparable<BigInteger> and IEquatable<BigInteger>.
It is serliazable and immutable. It has implicit casts from all
basic integral types and explicit casts to/from all numeric type."
So BigInteger is here now soon and this thread is obsolete now.
Cheers SharpFool
Just as an update to save time for others, I went looking for the BigInteger class and found out that it was cut from .Net 3.5 but looks to be slated for .Net 4.0.
Topic tags
- f# × 3707
- websharper × 2884
- core × 418
- bolero × 329
- compiler × 291
- enhancement × 215
- functional × 201
- bug × 176
- ui next × 140
- ui × 132
- c# × 122
- classes × 97
- web × 97
- .net × 84
- book × 84
- async × 77
- ui.next × 67
- templates × 58
- website × 51
- trywebsharper × 50
- question × 46
- html × 45
- server × 45
- owin × 44
- javascript × 43
- parallel × 43
- parsing × 41
- testing × 41
- typescript × 39
- template × 38
- sitelet × 31
- asynchronous × 30
- feature request × 28
- monad × 28
- ocaml × 28
- warp × 28
- tutorial × 27
- haskell × 26
- dotnet-ws × 23
- linq × 22
- sitelets × 22
- workflows × 22
- rpc × 21
- getting started × 20
- wpf × 20
- fpish × 19
- introduction × 19
- silverlight × 19
- monodevelop × 17
- piglets × 17
- suave × 17
- docs × 16
- collections × 15
- jquery × 15
- proposal × 15
- aspnetcore × 14
- pipeline × 14
- reactive × 14
- 4.6.0.361 × 13
- documentation × 13
- kendoui × 13
- formlets × 12
- 4.1.0.171 × 11
- monads × 11
- released: v0.1 × 11
- websocket × 11
- 4.4.0.280 × 10
- 4.4.1.288 × 10
- opinion × 10
- tryfsharponwasm × 10
- 4.0.190.100-rc × 9
- deployment × 9
- fixed × 9
- in × 9
- json × 9
- plugin × 9
- scheme × 9
- solid × 9
- 4.3.0.274 × 8
- 4.5.4.317 × 8
- basics × 8
- concurrent × 8
- highcharts × 8
- how-to × 8
- mvu × 8
- python × 8
- released: v0.11 × 8
- wontfix × 8
- 4.1.1.175 × 7
- 4.5.1.304 × 7
- complexity × 7
- remoting × 7
- visual studio × 7
- 4.1.2.178 × 6
- 4.5.4.151 × 6
- authentication × 6
- datefns × 6
- lisp × 6
- real-world × 6
- released in 4.0.192.103-rc × 6
- resources × 6
- scala × 6
- websharper ui.next × 6
- workshop × 6
- xaml × 6
- 4.0.193.110 × 5
- 4.2.11.258 × 5
- 4.2.3.236 × 5
- aspnetmvc × 5
- azure × 5
- bootstrap × 5
- conference × 5
- css × 5
- dsl × 5
- formlet × 5
- java × 5
- list × 5
- metaprogramming × 5
- ml × 5
- q&a × 5
- released in Zafir.4.0.188.91-beta10 × 5
- released: v0.4 × 5
- released: v0.8 × 5
- spa × 5
- sql × 5
- visualstudio × 5
- websharper.forms × 5
- zafir × 5
- 4.0.192.106 × 4
- 4.0.195.127 × 4
- 4.1.0.38 × 4
- 4.2.1.86 × 4
- 4.2.13.263 × 4
- 4.2.6.118 × 4
- 4.5.5.155 × 4
- 4.6.4.404 × 4
- discussion × 4
- example × 4
- extension × 4
- extensions × 4
- fsi × 4
- fsx × 4
- help wanted × 4
- highlightjs × 4
- html5 × 4
- jqueryui × 4
- lift × 4
- performance × 4
- qna × 4
- react × 4
- reflection × 4
- released: v0.10 × 4
- released: v0.5 × 4
- remote × 4
- rest × 4
- teaching × 4
- todomvc × 4
- 4.0.196.147 × 3
- 4.1.0.34 × 3
- 4.1.6.207 × 3
- 4.2.1.223-beta × 3
- 4.2.14.264 × 3
- 4.2.4.114 × 3
- 4.2.4.247 × 3
- 4.2.5.115 × 3
- 4.2.6.253 × 3
- 4.2.9.256 × 3
- 4.5.0.140 × 3
- 4.5.0.290 × 3
- 4.5.18.348 × 3
- 4.5.2.309 × 3
- 4.5.8.327 × 3
- 4.6.2.386 × 3
- ajax × 3
- alt.net × 3
- aml × 3
- asp.net mvc × 3
- build × 3
- canvas × 3
- cloudsharper × 3
- compilation × 3
- d3 × 3
- data × 3
- database × 3
- erlang × 3
- events × 3
- file upload × 3
- forums × 3
- how to × 3
- http × 3
- inline × 3
- issue × 3
- kendo × 3
- macro × 3
- materialui × 3
- mono × 3
- msbuild × 3
- mvc × 3
- pattern × 3
- piglet × 3
- released in Zafir.4.0.187.90-beta10 × 3
- released: v0.12 × 3
- released: v0.9 × 3
- svg × 3
- type provider × 3
- view × 3
- websharper4 × 3
- 4.1.1.64 × 2
- 4.1.5.203 × 2
- 4.1.7.232 × 2
- 4.2.10.257 × 2
- 4.2.3.111 × 2
- 4.2.5.249 × 2
- 4.3.0.127 × 2
- 4.3.1.275 × 2
- 4.5.10.166 × 2
- 4.5.10.332 × 2
- 4.5.15.342 × 2
- 4.5.19.349 × 2
- 4.5.3.146 × 2
- 4.5.9.301 × 2
- android × 2
- api × 2
- asp.net × 2
- beginner × 2
- blog × 2
- chart × 2
- client × 2
- client server app × 2
- clojure × 2
- computation expressions × 2
- constructor × 2
- corporate × 2
- courses × 2
- cufp × 2
- debugging × 2
- direct × 2
- discriminated union × 2
- dom × 2
- elm × 2
- endpoint × 2
- endpoints × 2
- enterprise × 2
- entity framework × 2
- event × 2
- f# interactive × 2
- fable × 2
- flowlet × 2
- formdata × 2
- forms × 2
- fsc × 2
- fsharp × 2
- google × 2
- google maps × 2
- hosting × 2
- https × 2
- iis 8.0 × 2
- install × 2
- interactive × 2
- interface × 2
- iphone × 2
- iteratee × 2
- jobs × 2
- jquery mobile × 2
- keynote × 2
- lens × 2
- lenses × 2
- linux × 2
- listmodel × 2
- mac × 2
- maps × 2
- numeric × 2
- oauth × 2
- obfuscation × 2
- offline × 2
- oop × 2
- osx × 2
- packaging × 2
- pattern matching × 2
- pipelines × 2
- post × 2
- quotation × 2
- reference × 2
- released in Zafir.4.0.185.88-beta10 × 2
- released: v0.13 × 2
- released: v0.6 × 2
- remarkable × 2
- rx × 2
- script × 2
- security × 2
- self host × 2
- seq × 2
- sockets × 2
- stm × 2
- sweetalert × 2
- tcp × 2
- trie × 2
- tutorials × 2
- type × 2
- url × 2
- var × 2
- websharper.charting × 2
- websockets × 2
- wig × 2
- xna × 2
- zh × 2
- .net framework × 1
- .net interop × 1
- 2012 × 1
- 4.0.194.126 × 1
- 4.1.3.184 × 1
- 4.1.4.189 × 1
- 4.2.0.214-beta × 1
- 4.2.12.259 × 1
- 4.2.2.231-beta × 1
- 4.2.8.255 × 1
- 4.4.1.137 × 1
- 4.5.1.141 × 1
- 4.5.11.334 × 1
- 4.5.12.177 × 1
- 4.5.13.318 × 1
- 4.5.13.338 × 1
- 4.5.16.344 × 1
- 4.5.2.145 × 1
- 4.5.3.144 × 1
- 4.5.3.310 × 1
- 4.5.5.319 × 1
- 4.5.6.156 × 1
- 4.5.6.320 × 1
- 4.5.7.322 × 1
- 4.5.8.161 × 1
- 4.5.9.164 × 1
- 4.6.1.127 × 1
- 4.6.1.381 × 1
- 4.6.3.388 × 1
- 4.6.5.406 × 1
- 4.6.6.407 × 1
- Canvas Sample Example × 1
- DynamicStyle Animated Style × 1
- ES8 × 1
- Fixed in 4.0.190.100-rc × 1
- Metro-Ui-Css × 1
- Metro4 × 1
- Released in Zafir.UI.Next.4.0.169.79-beta10 × 1
- SvgDynamicAttribute × 1
- Swiper × 1
- WebComponent × 1
- WebSharper.TypeScript × 1
- abstract class × 1
- accumulator × 1
- active pattern × 1
- actor × 1
- addin × 1
- agents × 1
- aggregation × 1
- agile × 1
- alter session × 1
- animation × 1
- anonymous object × 1
- apache × 1
- appcelerator × 1
- architecture × 1
- array × 1
- arrays × 1
- asp.net 4.5 × 1
- asp.net core × 1
- asp.net integration × 1
- asp.net mvc 4 × 1
- asp.net web api × 1
- aspnet × 1
- ast × 1
- attributes × 1
- authorization × 1
- b-tree × 1
- back button × 1
- badimageformatexception × 1
- bash script × 1
- batching × 1
- binding-vars × 1
- bistro × 1
- body × 1
- bundle × 1
- camtasia studio × 1
- cas protocol × 1
- charts × 1
- clarity × 1
- class × 1
- cli × 1
- clipboard × 1
- clojurescript × 1
- closures × 1
- cloud × 1
- cms × 1
- code-review × 1
- coding diacritics × 1
- color highlighting × 1
- color zones × 1
- combinator × 1
- combinators × 1
- compile × 1
- compile code on server × 1
- config × 1
- confirm × 1
- content × 1
- context × 1
- context.usersession × 1
- continuation-passing style × 1
- coords × 1
- cordova × 1
- cors × 1
- coursera × 1
- cross-domain × 1
- csla × 1
- current_schema × 1
- custom content × 1
- data grid × 1
- datetime × 1
- debug × 1
- declarative × 1
- delete × 1
- devexpress × 1
- dhtmlx × 1
- dictionary × 1
- directattribute × 1
- disqus × 1
- distance × 1
- do binding × 1
- doc elt ui.next upgrade × 1
- docker × 1
- dojo × 1
- dol × 1
- domain × 1
- dotnet core × 1
- du × 1
- duf-101 × 1
- dynamic × 1
- eastern language × 1
- eclipse × 1
- edsl × 1
- em algorithm × 1
- emacs × 1
- emotion × 1
- enums × 1
- error × 1
- etw × 1
- euclidean × 1
- eventhandlerlist × 1
- examples × 1
- ext js × 1
- extension methods × 1
- extjs × 1
- extra × 1
- facet pattern × 1
- failed to translate × 1
- fake × 1
- fantomas × 1
- fear × 1
- float × 1
- form × 1
- form-data × 1
- forum × 1
- fp × 1
- frank × 1
- fsdoc × 1
- fsharp.core × 1
- fsharp.powerpack × 1
- fsharpx × 1
- fsunit × 1
- function × 1
- functional style × 1
- game × 1
- games × 1
- gc × 1
- generic × 1
- geometry × 1
- getlastwin32error × 1
- getting-started × 1
- good first issue × 1
- google visualization timeline × 1
- google.maps × 1
- grid × 1
- group × 1
- guide × 1
- hash × 1
- headers × 1
- hello world example × 1
- heroku × 1
- highchart × 1
- history × 1
- html-templating × 1
- http405 × 1
- httpcontext × 1
- hubfs × 1
- i18n × 1
- ide × 1
- ie 8 × 1
- if-doc × 1
- iis × 1
- image × 1
- images × 1
- inheritance × 1
- initialize × 1
- input × 1
- install "visual studio" × 1
- installer × 1
- int64 × 1
- interfaces × 1
- internet explorer × 1
- interop × 1
- interpreter × 1
- invalid × 1
- io × 1
- iobservable × 1
- ios × 1
- iot × 1
- ipad × 1
- isomorphic × 1
- javascript optimization × 1
- javascript semanticui resources × 1
- jquery-plugin × 1
- jquery-ui × 1
- jquery-ui-datepicker × 1
- jquerymobile × 1
- js × 1
- kendo datasource × 1
- kendochart × 1
- kendoui compiler × 1
- knockout × 1
- l10n × 1
- leaflet × 1
- learning × 1
- library × 1
- libs × 1
- license × 1
- licensing × 1
- lineserieszonescfg × 1
- local setting × 1
- localization × 1
- logging × 1
- loop × 1
- macros × 1
- mailboxprocessor × 1
- mapping × 1
- markerclusterer × 1
- markup × 1
- marshal × 1
- math × 1
- mathjax × 1
- message × 1
- message passing × 1
- message-passing × 1
- meta × 1
- metro style × 1
- metro-ui × 1
- micro orm × 1
- minimum-requirements × 1
- mix × 1
- mobile installation × 1
- mod_mono × 1
- modal × 1
- module × 1
- mouseevent × 1
- mouseposition × 1
- multidimensional × 1
- multiline × 1
- multithreading × 1
- mysql × 1
- mysqlclient × 1
- nancy × 1
- native × 1
- nested × 1
- nested loops × 1
- netstandard × 1
- node × 1
- nunit × 1
- object relation mapper × 1
- object-oriented × 1
- om × 1
- onboarding × 1
- onclick × 1
- optimization × 1
- option × 1
- orm × 1
- os x × 1
- output-path × 1
- override × 1
- paper × 1
- parameter × 1
- persistence × 1
- persistent data structure × 1
- phonegap × 1
- plotly × 1
- pola × 1
- powerpack × 1
- prefix tree × 1
- principle of least authority × 1
- privacy × 1
- private × 1
- profile × 1
- programming × 1
- project × 1
- project euler × 1
- projekt_feladat × 1
- protected × 1
- provider × 1
- proxy × 1
- ptvs × 1
- public × 1
- pure f# × 1
- purescript × 1
- quant × 1
- query sitelet × 1
- quotations × 1
- range × 1
- raphael × 1
- razor × 1
- rc × 1
- reactjs × 1
- real-time × 1
- ref × 1
- region × 1
- released in 4.0.190.100-rc × 1
- released: v0.2 × 1
- released: v0.3 × 1
- released: v0.7 × 1
- reporting × 1
- responsive design × 1
- rest api × 1
- rest sitelet × 1
- restful × 1
- round table × 1
- router × 1
- routing × 1
- rpc reverseproxy × 1
- runtime × 1
- sales × 1
- sample × 1
- sampleapp × 1
- scriptcs × 1
- scripting × 1
- search × 1
- self hosted × 1
- semanticui × 1
- sequence × 1
- serialisation × 1
- service × 1
- session-state × 1
- sharepoint × 1
- signals × 1
- sitelet website × 1
- sitelet.protect × 1
- sitlets × 1
- slickgrid × 1
- source code × 1
- sqlentityconnection × 1
- ssl × 1
- standards × 1
- static content × 1
- stickynotes × 1
- streamreader × 1
- stress × 1
- strong name × 1
- structures × 1
- submitbutton × 1
- subscribe × 1
- svg example html5 websharper.ui.next × 1
- system.datetime × 1
- system.reflection.targetinvocationexception × 1
- table storage × 1
- targets × 1
- tdd × 1
- template ClientServer × 1
- templates ui.next × 1
- templating × 1
- text parsing × 1
- three.js × 1
- time travel × 1
- tls × 1
- tooltip × 1
- tracing × 1
- tsunamiide × 1
- turkish × 1
- twitter-bootstrap × 1
- type erasure × 1
- type inference × 1
- type providers × 1
- type-providers × 1
- typeprovider × 1
- ui next forms × 1
- ui-next × 1
- ui.next jqueryui × 1
- ui.next charting × 1
- ui.next formlets × 1
- ui.next forms × 1
- ui.next suave visualstudio × 1
- ui.next templating × 1
- unicode × 1
- unittest client × 1
- up for grabs × 1
- upload × 1
- usersession × 1
- validation × 1
- vb × 1
- vb.net × 1
- vector × 1
- view.map × 1
- visal studio × 1
- visual f# × 1
- visual studio 11 × 1
- visual studio 2012 × 1
- visual studio code × 1
- visual studio shell × 1
- visualstudio-websharper × 1
- vs2017 compiler zafir × 1
- vsix × 1
- web api × 1
- web-scraping × 1
- webapi × 1
- webcomponents × 1
- webforms × 1
- webgl × 1
- webrtc × 1
- webshaper × 1
- websharper async × 1
- websharper codemirror × 1
- websharper f# google × 1
- websharper forms × 1
- websharper reactive × 1
- websharper rpc × 1
- websharper sitelets routing × 1
- websharper warp × 1
- websharper-interface-generator × 1
- websharper.chartsjs × 1
- websharper.com × 1
- websharper.exe × 1
- websharper.owin × 1
- websharper.ui.next × 1
- websharper.ui.next jquery × 1
- websockets iis × 1
- webspeech × 1
- why-websharper × 1
- windows 7 × 1
- windows 8 × 1
- windows-phone × 1
- winrt × 1
- www.grabbitmedia.com × 1
- xamarin × 1
- xml × 1
- yeoman × 1
- yield × 1
- zafir beta × 1
- zafir websharper4 × 1
- zarovizsga × 1
Copyright (c) 2011-2012 IntelliFactory. All rights reserved. Home | Products | Consulting | Trainings | Blogs | Jobs | Contact Us | Terms of Use | Privacy Policy | Cookie Policy |
Built with WebSharper |
Microsoft.FSharp.Math provides the type BigInt which is not provided by C#.
How can I benefit from this library from C#? What is the right way to access
the assembly?