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< html > < head > < meta http-equiv = "X-UA-Compatible" content = "IE=edge" / > < link rel = "shortcut icon" href = "../icons/favicon.ico" / > < link rel = "stylesheet" type = "text/css" href = "../styles/branding.css" / > < link rel = "stylesheet" type = "text/css" href = "../styles/branding-en-US.css" / > < script type = "text/javascript" src = "../scripts/branding.js" > < / script > < meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" / > < title > mpf_t Class< / title > < meta name = "Language" content = "en-us" / > < meta name = "System.Keywords" content = "mpf_t class" / > < meta name = "System.Keywords" content = "Math.Gmp.Native.mpf_t class" / > < meta name = "System.Keywords" content = "mpf_t class, about mpf_t class" / > < meta name = "Microsoft.Help.F1" content = "Math.Gmp.Native.mpf_t" / > < meta name = "Microsoft.Help.Id" content = "T:Math.Gmp.Native.mpf_t" / > < meta name = "Description" content = "Represents a multiple precision floating-point number." / > < meta name = "Microsoft.Help.ContentType" content = "Reference" / > < meta name = "BrandingAware" content = "true" / > < meta name = "container" content = "Math.Gmp.Native" / > < meta name = "file" content = "37c88d6c-8d02-2330-ad77-f20fb73d1677" / > < meta name = "guid" content = "37c88d6c-8d02-2330-ad77-f20fb73d1677" / > < link rel = "stylesheet" type = "text/css" href = "../styles/branding-Website.css" / > < script type = "text/javascript" src = "../scripts/jquery-1.11.0.min.js" > < / script > < script type = "text/javascript" src = "../scripts/branding-Website.js" > < / script > < script type = "text/javascript" src = "../scripts/clipboard.min.js" > < / script > < / head > < body onload = "OnLoad('cs')" > < input type = "hidden" id = "userDataCache" class = "userDataStyle" / > < div class = "pageHeader" id = "PageHeader" > GMP Native Interface for .NET< form id = "SearchForm" method = "get" action = "#" onsubmit = "javascript:TransferToSearchPage(); return false;" > < input id = "SearchTextBox" type = "text" maxlength = "200" / > < button id = "SearchButton" type = "submit" > < / button > < / form > < / div > < div class = "pageBody" > < div class = "leftNav" id = "leftNav" > < div id = "tocNav" > < div class = "toclevel0" data-toclevel = "0" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "846f5c8a-6cba-433e-9f18-cde2ff5695cd.htm" title = "GMP Native Interface for .NET" tocid = "roottoc" > GMP Native Interface for .NET< / a > < / div > < div class = "toclevel0" data-toclevel = "0" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" title = "Math.Gmp.Native" tocid = "d9c51b9f-0c54-770b-28ea-6eebd8fef368" > Math.Gmp.Native< / a > < / div > < div class = "toclevel1 current" data-toclevel = "1" data-childrenloaded = "true" > < a class = "tocExpanded" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "37c88d6c-8d02-2330-ad77-f20fb73d1677.htm" title = "mpf_t Class" tocid = "37c88d6c-8d02-2330-ad77-f20fb73d1677" > mpf_t Class< / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a data-tochassubtree = "false" href = "0e0a10d5-52ab-1821-6fe1-97514e009418.htm" title = "mpf_t Constructor " tocid = "0e0a10d5-52ab-1821-6fe1-97514e009418" > mpf_t Constructor < / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "44d8440b-0daa-0393-510e-a0ace6d299f7.htm" title = "mpf_t Properties" tocid = "44d8440b-0daa-0393-510e-a0ace6d299f7" > mpf_t Properties< / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "2583789b-09c3-0f9a-fbf9-4d362bd9129a.htm" title = "mpf_t Methods" tocid = "2583789b-09c3-0f9a-fbf9-4d362bd9129a" > mpf_t Methods< / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "3ca44c9f-677e-d5fa-5414-399843506633.htm" title = "mpf_t Type Conversions" tocid = "3ca44c9f-677e-d5fa-5414-399843506633" > mpf_t Type Conversions< / a > < / div > < / div > < div id = "tocResizableEW" onmousedown = "OnMouseDown(event);" > < / div > < div id = "TocResize" class = "tocResize" > < img id = "ResizeImageIncrease" src = "../icons/TocOpen.gif" onclick =
Represents a multiple precision floating-point number.
< / div > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID0RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID0RB', event)" tabindex = "0" > < img id = "ID0RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Inheritance Hierarchy< / span > < / div > < div id = "ID0RBSection" class = "collapsibleSection" > < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > System< span id = "LST9BA7085B_0" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_0?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > Object< / a > < br / > < a href = "8f3c572b-8133-bccc-b838-9d22e3467898.htm" > Math.Gmp.Native< span id = "LST9BA7085B_1" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_1?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mp_base< / a > < br / > < span class = "selflink" > Math.Gmp.Native< span id = "LST9BA7085B_2" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_2?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mpf_t< / span > < br / > < / div > < p > < / p >
< strong > Namespace:< / strong >
< a href = "d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" > Math.Gmp.Native< / a > < br / >
< strong > Assembly:< / strong >
Math.Gmp.Native (in Math.Gmp.Native.dll) Version: 1.0.0.0 (1.0.0.0)< div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID2RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID2RB', event)" tabindex = "0" > < img id = "ID2RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Syntax< / span > < / div > < div id = "ID2RBSection" class = "collapsibleSection" > < div class = "codeSnippetContainer" > < div class = "codeSnippetContainerTabs" > < div id = "ID1EDCA_tab1" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID1EDCA','cs','1','4');return false;" > C#< / a > < / div > < div id = "ID1EDCA_tab2" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID1EDCA','vb','2','4');return false;" > VB< / a > < / div > < div id = "ID1EDCA_tab3" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID1EDCA','cpp','3','4');return false;" > C++< / a > < / div > < div id = "ID1EDCA_tab4" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID1EDCA','fs','4','4');return false;" > F#< / a > < / div > < / div > < div class = "codeSnippetContainerCodeContainer" > < div class = "codeSnippetToolBar" > < div class = "codeSnippetToolBarText" > < a id = "ID1EDCA_copyCode" href = "#" class = "copyCodeSnippet" onclick = "javascript:CopyToClipboard('ID1EDCA');return false;" title = "Copy" > Copy< / a > < / div > < / div > < div id = "ID1EDCA_code_Div1" class = "codeSnippetContainerCode" style = "display: block" > < pre xml:space = "preserve" > < span class = "keyword" > public< / span > < span class = "keyword" > class< / span > < span class = "identifier" > mpf_t< / span > : < span class = "identifier" > mp_base< / span > < / pre > < / div > < div id = "ID1EDCA_code_Div2" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > Public< / span > < span class = "keyword" > Class< / span > < span class = "identifier" > mpf_t< / span >
< span class = "keyword" > Inherits< / span > < span class = "identifier" > mp_base< / span > < / pre > < / div > < div id = "ID1EDCA_code_Div3" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > public< / span > < span class = "keyword" > ref class< / span > < span class = "identifier" > mpf_t< / span > : < span class = "keyword" > public< / span > < span class = "identifier" > mp_base< / span > < / pre > < / div > < div id = "ID1EDCA_code_Div4" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > type< / span > < span class = "identifier" > mpf_t< / span > =
< span class = "keyword" > class< / span >
< span class = "keyword" > inherit< / span > < span class = "identifier" > mp_base< / span >
< span class = "keyword" > end< / span > < / pre > < / div > < / div > < / div > < script type = "text/javascript" > AddLanguageTabSet ( "ID1EDCA" ) ; < / script > < / div > < p > The < span class = "selflink" > mpf_t< / span > type exposes the following members.< / p > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID3RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID3RB', event)" tabindex = "0" > < img id = "ID3RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Constructors< / span > < / div > < div id = "ID3RBSection" class = "collapsibleSection" > < table class = "members" id = "constructorList" > < tr > < th class = "iconColumn" >
< / th > < th > Name< / th > < th > Description< / th > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "0e0a10d5-52ab-1821-6fe1-97514e009418.htm" > mpf_t< / a > < / td > < td > < div class = "summary" >
Creates a new multiple precision floating-point number.
< / div > < / td > < / tr > < / table > < a href = "#PageHeader" > Top< / a > < / div > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID4RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID4RB', event)" tabindex = "0" > < img id = "ID4RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Properties< / span > < / div > < div id = "ID4RBSection" class = "collapsibleSection" > < table class = "members" id = "propertyList" > < tr > < th class = "iconColumn" >
< / th > < th > Name< / th > < th > Description< / th > < / tr > < tr data = "public;inherited;notNetfw;" > < td > < img src = "../icons/pubproperty.gif" alt = "Public property" title = "Public property" / > < / td > < td > < a href = "db55f1a9-cd4c-b7e9-c831-4391c0497ef7.htm" > _mp_d< / a > < / td > < td > < div class = "summary" >
A pointer to an array of limbs which is the magnitude.
< / div > (Inherited from < a href = "8f3c572b-8133-bccc-b838-9d22e3467898.htm" > mp_base< / a > .)< / td > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubproperty.gif" alt = "Public property" title = "Public property" / > < / td > < td > < a href = "f63ee104-afaa-e0b8-ff39-f60b9a934ea3.htm" > _mp_exp< / a > < / td > < td > < div class = "summary" >
The exponent, in limbs, determining the location of the implied radix point.
< / div > < / td > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubproperty.gif" alt = "Public property" title = "Public property" / > < / td > < td > < a href = "772c3bd8-b9ec-225d-3d98-e17ae89d4294.htm" > _mp_prec< / a > < / td > < td > < div class = "summary" >
The precision of the mantissa, in limbs.
< / div > < / td > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubproperty.gif" alt = "Public property" title = "Public property" / > < / td > < td > < a href = "9aa3bb30-32b3-b465-af05-9b048bb610f1.htm" > _mp_size< / a > < / td > < td > < div class = "summary" >
The number of limbs currently in use, or the negative of that when representing a negative value.
< / div > (Overrides < a href = "178d8d44-2485-2972-fe2f-eb9848059e6f.htm" > mp_base< span id = "LST9BA7085B_3" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_3?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > _mp_size< / a > .)< / td > < / tr > < / table > < a href = "#PageHeader" > Top< / a > < / div > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID5RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID5RB', event)" tabindex = "0" > < img id = "ID5RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Methods< / span > < / div > < div id = "ID5RBSection" class = "collapsibleSection" > < table class = "members" id = "methodList" > < tr > < th class = "iconColumn" >
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< / th > < th > Name< / th > < th > Description< / th > < / tr > < tr data = "public;inherited;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "http://msdn2.microsoft.com/en-us/library/bsc2ak47" target = "_blank" > Equals< / a > < / td > < td > < div class = "summary" > Determines whether the specified < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > is equal to the current < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .< / div > (Inherited from < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .)< / td > < / tr > < tr data = "protected;inherited;notNetfw;" > < td > < img src = "../icons/protmethod.gif" alt = "Protected method" title = "Protected method" / > < / td > < td > < a href = "http://msdn2.microsoft.com/en-us/library/4k87zsw7" target = "_blank" > Finalize< / a > < / td > < td > < div class = "summary" > Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.< / div > (Inherited from < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .)< / td > < / tr > < tr data = "public;inherited;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "http://msdn2.microsoft.com/en-us/library/zdee4b3y" target = "_blank" > GetHashCode< / a > < / td > < td > < div class = "summary" > Serves as a hash function for a particular type. < / div > (Inherited from < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .)< / td > < / tr > < tr data = "public;inherited;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "http://msdn2.microsoft.com/en-us/library/dfwy45w9" target = "_blank" > GetType< / a > < / td > < td > < div class = "summary" > Gets the type of the current instance.< / div > (Inherited from < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .)< / td > < / tr > < tr data = "protected;inherited;notNetfw;" > < td > < img src = "../icons/protmethod.gif" alt = "Protected method" title = "Protected method" / > < / td > < td > < a href = "http://msdn2.microsoft.com/en-us/library/57ctke0a" target = "_blank" > MemberwiseClone< / a > < / td > < td > < div class = "summary" > Creates a shallow copy of the current < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .< / div > (Inherited from < a href = "http://msdn2.microsoft.com/en-us/library/e5kfa45b" target = "_blank" > Object< / a > .)< / td > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "b77413f7-f862-7996-838a-f510fc3f69ed.htm" > ToIntPtr< / a > < / td > < td > < div class = "summary" >
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Gets the unmanaged memory pointer of the multiple precision floating-point number.
< / div > < / td > < / tr > < tr data = "public;declared;notNetfw;" > < td > < img src = "../icons/pubmethod.gif" alt = "Public method" title = "Public method" / > < / td > < td > < a href = "77eccd6b-888f-b3a8-0800-ead4af162af0.htm" > ToString< / a > < / td > < td > < div class = "summary" >
Return the string representation of the float.
< / div > (Overrides < a href = "http://msdn2.microsoft.com/en-us/library/7bxwbwt2" target = "_blank" > Object< span id = "LST9BA7085B_4" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_4?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > ToString< span id = "LST9BA7085B_5" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_5?cs=()|vb=|cpp=()|nu=()|fs=()" ) ; < / script > < / a > .)< / td > < / tr > < / table > < a href = "#PageHeader" > Top< / a > < / div > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID6RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID6RB', event)" tabindex = "0" > < img id = "ID6RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Operators< / span > < / div > < div id = "ID6RBSection" class = "collapsibleSection" > < table class = "members" id = "operatorList" > < tr > < th class = "iconColumn" >
< / th > < th > Name< / th > < th > Description< / th > < / tr > < tr data = "public;static;declared;notNetfw;" > < td > < img src = "../icons/puboperator.gif" alt = "Public operator" title = "Public operator" / > < img src = "../icons/static.gif" alt = "Static member" title = "Static member" / > < / td > < td > < a href = "058e477a-0126-b073-ee83-77ed89a58351.htm" > < span id = "LST9BA7085B_6" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_6?cs=Implicit|vb=Widening|cpp=Implicit|nu=Implicit|fs=Implicit" ) ; < / script > (String to mpf_t)< / a > < / td > < td > < div class = "summary" >
Converts a < a href = "http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target = "_blank" > String< / a > value to an < span class = "selflink" > mpf_t< / span > value.
< / div > < / td > < / tr > < / table > < a href = "#PageHeader" > Top< / a > < / div > < div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID7RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID7RB', event)" tabindex = "0" > < img id = "ID7RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Remarks< / span > < / div > < div id = "ID7RBSection" class = "collapsibleSection" > < p >
The floating point functions accept and return exponents in the C type < a href = "e6a17880-791f-37d4-4942-cf26ce7d4cbf.htm" > mp_exp_t< / a > .
Currently this is usually a long, but on some systems it’ s an int for efficiency.
< / p > < p >
In .NET, this is a 32-bit integer.
< / p > < / div > < div class = "collapsibleAreaRegion" id = "seeAlsoSection" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID8RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID8RB', event)" tabindex = "0" > < img id = "ID8RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > See Also< / span > < / div > < div id = "ID8RBSection" class = "collapsibleSection" > < h4 class = "subHeading" > Reference< / h4 > < div class = "seeAlsoStyle" > < a href = "d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" > Math.Gmp.Native Namespace< / a > < / div > < div class = "seeAlsoStyle" > < a href = "e6a17880-791f-37d4-4942-cf26ce7d4cbf.htm" > Math.Gmp.Native< span id = "LST9BA7085B_7" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_7?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mp_exp_t< / a > < / div > < div class = "seeAlsoStyle" > < a href = "bf1f694d-f9b2-6413-12e5-ebae603d5b49.htm" > Math.Gmp.Native< span id = "LST9BA7085B_8" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_8?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mp_limb_t< / a > < / div > < div class = "seeAlsoStyle" > < a href = "635f1879-5f85-881e-cca8-3222baf5045a.htm" > Math.Gmp.Native< span id = "LST9BA7085B_9" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_9?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mpq_t< / a > < / div > < div class = "seeAlsoStyle" > < a href = "8beda7fb-bbc4-b56f-fd1f-1459377ecb3b.htm" > Math.Gmp.Native< span id = "LST9BA7085B_10" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST9BA7085B_10?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > mpz_t< / a > < / div > < / div > < / div > < / div > < div id = "pageFooter" class = "pageFooter" > < / div > < / body > < / html >