2017-12-03 23:32:51 +01:00
< 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 > gmp_lib.reallocate Method < / title > < meta name = "Language" content = "en-us" / > < meta name = "System.Keywords" content = "reallocate method" / > < meta name = "System.Keywords" content = "gmp_lib.reallocate method" / > < meta name = "Microsoft.Help.F1" content = "Math.Gmp.Native.gmp_lib.reallocate" / > < meta name = "Microsoft.Help.Id" content = "M:Math.Gmp.Native.gmp_lib.reallocate(Math.Gmp.Native.void_ptr,Math.Gmp.Native.size_t,Math.Gmp.Native.size_t)" / > < meta name = "Description" content = "Resize a previously allocated block of bytes to be bytes." / > < meta name = "Microsoft.Help.ContentType" content = "Reference" / > < meta name = "BrandingAware" content = "true" / > < meta name = "container" content = "Math.Gmp.Native" / > < meta name = "file" content = "067f64f9-7014-8c6a-3c02-153c1460a1dd" / > < meta name = "guid" content = "067f64f9-7014-8c6a-3c02-153c1460a1dd" / > < 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 = "toclevel0" data-toclevel = "0" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm" title = "gmp_lib Class" tocid = "3af6b34c-3242-2b75-e7c7-ab79af8a4b0f" > gmp_lib Class< / a > < / div > < div class = "toclevel1" data-toclevel = "1" data-childrenloaded = "true" > < a class = "tocExpanded" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "0fa7cbf3-e8f4-6b14-d829-8aa663e77c74.htm" title = "gmp_lib Methods" tocid = "0fa7cbf3-e8f4-6b14-d829-8aa663e77c74" > gmp_lib Methods< / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a data-tochassubtree = "false" href = "c9cb6a67-59b8-5c03-f31d-f252441c53f6.htm" title = "_mpz_realloc Method " tocid = "c9cb6a67-59b8-5c03-f31d-f252441c53f6" > _mpz_realloc Method < / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a data-tochassubtree = "false" href = "2c68671c-cd5c-e2ec-52a2-65b0ca31c3d1.htm" title = "allocate Method " tocid = "2c68671c-cd5c-e2ec-52a2-65b0ca31c3d1" > allocate Method < / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a class = "tocCollapsed" onclick = "javascript: Toggle(this);" href = "#!" / > < a data-tochassubtree = "true" href = "92160da3-b1af-e005-cb05-e3fb4dd524d8.htm" title = "free Method " tocid = "92160da3-b1af-e005-cb05-e3fb4dd524d8" > free Method < / a > < / div > < div class = "toclevel2" data-toclevel = "2" > < a data-tochassubtree = "false" href = "fe6e46c3-8464-a080-b5fc-718589320cd5.htm" title = "gmp_asprintf Method " tocid = "fe6e46c3-8464-a080-b5fc-718589320cd5" > gmp_asprintf Method
2017-11-04 16:02:37 +01:00
Resize a previously allocated block < span class = "parameter" > ptr< / span > of < span class = "parameter" > old_size< / span > bytes to be < span class = "parameter" > new_size< / span > bytes.
< / div > < p > < / p >
< strong > Namespace:< / strong >
< a href = "d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" > Math.Gmp.Native< / a > < br / >
< strong > Assembly:< / strong >
< div class = "collapsibleAreaRegion" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID1RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID1RB', event)" tabindex = "0" > < img id = "ID1RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > Syntax< / span > < / div > < div id = "ID1RBSection" class = "collapsibleSection" > < div class = "codeSnippetContainer" > < div class = "codeSnippetContainerTabs" > < div id = "ID0EDCA_tab1" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID0EDCA','cs','1','4');return false;" > C#< / a > < / div > < div id = "ID0EDCA_tab2" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID0EDCA','vb','2','4');return false;" > VB< / a > < / div > < div id = "ID0EDCA_tab3" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID0EDCA','cpp','3','4');return false;" > C++< / a > < / div > < div id = "ID0EDCA_tab4" class = "codeSnippetContainerTab" > < a href = "#" onclick = "javascript:ChangeTab('ID0EDCA','fs','4','4');return false;" > F#< / a > < / div > < / div > < div class = "codeSnippetContainerCodeContainer" > < div class = "codeSnippetToolBar" > < div class = "codeSnippetToolBarText" > < a id = "ID0EDCA_copyCode" href = "#" class = "copyCodeSnippet" onclick = "javascript:CopyToClipboard('ID0EDCA');return false;" title = "Copy" > Copy< / a > < / div > < / div > < div id = "ID0EDCA_code_Div1" class = "codeSnippetContainerCode" style = "display: block" > < pre xml:space = "preserve" > < span class = "keyword" > public< / span > < span class = "keyword" > static< / span > < span class = "identifier" > void_ptr< / span > < span class = "identifier" > reallocate< / span > (
< span class = "identifier" > void_ptr< / span > < span class = "parameter" > ptr< / span > ,
< span class = "identifier" > size_t< / span > < span class = "parameter" > old_size< / span > ,
< span class = "identifier" > size_t< / span > < span class = "parameter" > new_size< / span >
)< / pre > < / div > < div id = "ID0EDCA_code_Div2" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > Public< / span > < span class = "keyword" > Shared< / span > < span class = "keyword" > Function< / span > < span class = "identifier" > reallocate< / span > (
< span class = "parameter" > ptr< / span > < span class = "keyword" > As< / span > < span class = "identifier" > void_ptr< / span > ,
< span class = "parameter" > old_size< / span > < span class = "keyword" > As< / span > < span class = "identifier" > size_t< / span > ,
< span class = "parameter" > new_size< / span > < span class = "keyword" > As< / span > < span class = "identifier" > size_t< / span >
) < span class = "keyword" > As< / span > < span class = "identifier" > void_ptr< / span > < / pre > < / div > < div id = "ID0EDCA_code_Div3" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > public< / span > :
< span class = "keyword" > static< / span > < span class = "identifier" > void_ptr< / span > < span class = "identifier" > reallocate< / span > (
< span class = "identifier" > void_ptr< / span > < span class = "parameter" > ptr< / span > ,
< span class = "identifier" > size_t< / span > < span class = "parameter" > old_size< / span > ,
< span class = "identifier" > size_t< / span > < span class = "parameter" > new_size< / span >
)< / pre > < / div > < div id = "ID0EDCA_code_Div4" class = "codeSnippetContainerCode" style = "display: none" > < pre xml:space = "preserve" > < span class = "keyword" > static< / span > < span class = "keyword" > member< / span > < span class = "identifier" > reallocate< / span > :
< span class = "parameter" > ptr< / span > : < span class = "identifier" > void_ptr< / span > *
< span class = "parameter" > old_size< / span > : < span class = "identifier" > size_t< / span > *
< span class = "parameter" > new_size< / span > : < span class = "identifier" > size_t< / span > < span class = "keyword" > -> < / span > < span class = "identifier" > void_ptr< / span >
< / pre > < / div > < / div > < / div > < script type = "text/javascript" > AddLanguageTabSet ( "ID0EDCA" ) ; < / script > < h4 class = "subHeading" > Parameters< / h4 > < dl > < dt > < span class = "parameter" > ptr< / span > < / dt > < dd > Type: < a href = "e200d734-044d-4cc7-acc7-2333d7cf3c9a.htm" > Math.Gmp.Native< span id = "LST5C17244B_1" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST5C17244B_1?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > void_ptr< / a > < br / > Pointer to previously allocated block.< / dd > < dt > < span class = "parameter" > old_size< / span > < / dt > < dd > Type: < a href = "d9761bfb-1882-59d2-e89b-c6460141f9a6.htm" > Math.Gmp.Native< span id = "LST5C17244B_2" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST5C17244B_2?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > size_t< / a > < br / > Number of bytes of previously allocated block.< / dd > < dt > < span class = "parameter" > new_size< / span > < / dt > < dd > Type: < a href = "d9761bfb-1882-59d2-e89b-c6460141f9a6.htm" > Math.Gmp.Native< span id = "LST5C17244B_3" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST5C17244B_3?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > size_t< / a > < br / > New number of bytes of previously allocated block.< / dd > < / dl > < h4 class = "subHeading" > Return Value< / h4 > Type: < a href = "e200d734-044d-4cc7-acc7-2333d7cf3c9a.htm" > void_ptr< / a > < br / > A previously allocated block ptr of < span class = "parameter" > old_size< / span > bytes to be < span class = "parameter" > new_size< / span > bytes.< / div > < 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" / > Remarks< / span > < / div > < div id = "ID2RBSection" class = "collapsibleSection" > < p >
The block may be moved if necessary or if desired, and in that case the smaller of < span class = "parameter" > old_size< / span > and
< span class = "parameter" > new_size< / span > bytes must be copied to the new location.
The return value is a pointer to the resized block, that being the new location if moved or just < span class = "parameter" > ptr< / span > if not.
< / p > < p > < span class = "parameter" > ptr< / span > is never NULL, it’
< span class = "parameter" > new_size< / span > may be bigger or smaller than < span class = "parameter" > old_size< / span > .
< / p > < p >
The reallocate function parameter < span class = "parameter" > old_size< / span > is passed for convenience, but of course it can be ignored
if not needed by an implementation. The default functions using malloc and friends for instance don’
< / p > < / div > < div class = "collapsibleAreaRegion" id = "seeAlsoSection" > < span class = "collapsibleRegionTitle" onclick = "SectionExpandCollapse('ID3RB')" onkeypress = "SectionExpandCollapse_CheckKey('ID3RB', event)" tabindex = "0" > < img id = "ID3RBToggle" class = "collapseToggle" src = "../icons/SectionExpanded.png" / > See Also< / span > < / div > < div id = "ID3RBSection" class = "collapsibleSection" > < h4 class = "subHeading" > Reference< / h4 > < div class = "seeAlsoStyle" > < a href = "3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm" > gmp_lib Class< / a > < / div > < div class = "seeAlsoStyle" > < a href = "d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" > Math.Gmp.Native Namespace< / a > < / div > < div class = "seeAlsoStyle" > < a href = "2c68671c-cd5c-e2ec-52a2-65b0ca31c3d1.htm" > gmp_lib< span id = "LST5C17244B_4" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST5C17244B_4?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > allocate(size_t)< / a > < / div > < div class = "seeAlsoStyle" > < a href = "19ccd2e3-05f1-d4f4-79b7-28b4f26e5768.htm" > gmp_lib< span id = "LST5C17244B_5" > < / span > < script type = "text/javascript" > AddLanguageSpecificTextSet ( "LST5C17244B_5?cs=.|vb=.|cpp=::|nu=.|fs=." ) ; < / script > free(void_ptr, size_t)< / a > < / div > < div class = "seeAlsoStyle" > < a href = "3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm" > < a href = "https://gmplib.org/manual/Custom-Allocation.html#Custom-Allocation" > GNU MP - Custom Allocation< / a > < / a > < / div > < / div > < / div > < / div > < div id = "pageFooter" class = "pageFooter" > < / div > < / body > < / html >
