Normally, a variable should be initialized once only or at least be cleared, using <ahref="3a2a17ed-a64c-8716-7f65-18c661a5279f.htm">mpf_clear(mpf_t)</a>,
between initializations. The precision of <spanclass="parameter">x</span> is undefined unless a default precision has
already been established by a call to <ahref="9e93d02e-f5c7-1a6f-68fe-a33d793a93e2.htm">mpf_set_default_prec(mp_bitcnt_t)</a>.
</p></div><divclass="collapsibleAreaRegion"><spanclass="collapsibleRegionTitle"onclick="SectionExpandCollapse('ID3RB')"onkeypress="SectionExpandCollapse_CheckKey('ID3RB', event)"tabindex="0"><imgid="ID3RBToggle"class="collapseToggle"src="../icons/SectionExpanded.png"/>Examples</span></div><divid="ID3RBSection"class="collapsibleSection"><divclass="codeSnippetContainer"><divclass="codeSnippetContainerTabs"><divid="ID0EDAABA_tab1"class="codeSnippetContainerTab"><ahref="#"onclick="javascript:ChangeTab('ID0EDAABA','cs','1','4');return false;">C#</a></div><divid="ID0EDAABA_tab2"class="codeSnippetContainerTab"><ahref="#"onclick="javascript:ChangeTab('ID0EDAABA','vb','2','4');return false;">VB</a></div><divid="ID0EDAABA_tab3"class="codeSnippetContainerTabPhantom"><ahref="#"onclick="javascript:ChangeTab('ID0EDAABA','cpp','3','4');return false;">C++</a></div><divid="ID0EDAABA_tab4"class="codeSnippetContainerTabPhantom"><ahref="#"onclick="javascript:ChangeTab('ID0EDAABA','fs','4','4');return false;">F#</a></div></div><divclass="codeSnippetContainerCodeContainer"><divclass="codeSnippetToolBar"><divclass="codeSnippetToolBarText"><aid="ID0EDAABA_copyCode"href="#"class="copyCodeSnippet"onclick="javascript:CopyToClipboard('ID0EDAABA');return false;"title="Copy">Copy</a></div></div><divid="ID0EDAABA_code_Div1"class="codeSnippetContainerCode"style="display: block"><prexml:space="preserve"><spanclass="highlight-comment">// Set default precision to 64 bits.</span>
<spanclass="highlight-comment">// Release unmanaged memory allocated for x.</span>
gmp_lib.mpf_clear(x);</pre></div><divid="ID0EDAABA_code_Div2"class="codeSnippetContainerCode"style="display: none"><prexml:space="preserve"><spanclass="highlight-comment">' Set default precision to 64 bits.</span>
<spanclass="highlight-comment">' Release unmanaged memory allocated for x.</span>
gmp_lib.mpf_clear(x)</pre></div><divid="ID0EDAABA_code_Div3"class="codeSnippetContainerCode"style="display: none"><p>No code example is currently available or this language may not be supported.</p></div><divid="ID0EDAABA_code_Div4"class="codeSnippetContainerCode"style="display: none"><p>No code example is currently available or this language may not be supported.</p></div></div></div><scripttype="text/javascript">AddLanguageTabSet("ID0EDAABA");</script></div><divclass="collapsibleAreaRegion"id="seeAlsoSection"><spanclass="collapsibleRegionTitle"onclick="SectionExpandCollapse('ID4RB')"onkeypress="SectionExpandCollapse_CheckKey('ID4RB', event)"tabindex="0"><imgid="ID4RBToggle"class="collapseToggle"src="../icons/SectionExpanded.png"/>See Also</span></div><divid="ID4RBSection"class="collapsibleSection"><h4class="subHeading">Reference</h4><divclass="seeAlsoStyle"><ahref="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm">gmp_lib Class</a></div><divclass="seeAlsoStyle"><ahref="d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm">Math.Gmp.Native Namespace</a></div><divclass="seeAlsoStyle"><ahref="9e93d02e-f5c7-1a6f-68fe-a33d793a93e2.htm">gmp_lib<spanid="LST8CFCCA5C_2"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_set_default_prec(mp_bitcnt_t)</a></div><divclass="seeAlsoStyle"><ahref="1ca4ec7e-b5d1-3b51-8341-5a345990e62d.htm">gmp_lib<spanid="LST8CFCCA5C_3"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_get_default_prec<spanid="LST8CFCCA5C_4"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_4?cs=()|vb=|cpp=()|nu=()|fs=()");</script></a></div><divclass="seeAlsoStyle"><ahref="98083eac-9993-41b2-4943-678785fce712.htm">gmp_lib<spanid="LST8CFCCA5C_5"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_5?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_init2(mpf_t, mp_bitcnt_t)</a></div><divclass="seeAlsoStyle"><ahref="018278a0-148f-c898-5bd0-42aae4ae0069.htm">gmp_lib<spanid="LST8CFCCA5C_6"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_6?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_inits(<spanid="LST8CFCCA5C_7"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_7?cpp=array<");</script>mpf_t<spanid="LST8CFCCA5C_8"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_8?cpp=>|cs=[]|vb=()|nu=[]|fs=[]");</script>)</a></div><divclass="seeAlsoStyle"><ahref="3a2a17ed-a64c-8716-7f65-18c661a5279f.htm">gmp_lib<spanid="LST8CFCCA5C_9"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_9?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_clear(mpf_t)</a></div><divclass="seeAlsoStyle"><ahref="bfb87570-3b2e-079a-1528-3746424bbdef.htm">gmp_lib<spanid="LST8CFCCA5C_10"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_10?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_clears(<spanid="LST8CFCCA5C_11"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_11?cpp=array<");</script>mpf_t<spanid="LST8CFCCA5C_12"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_12?cpp=>|cs=[]|vb=()|nu=[]|fs=[]");</script>)</a></div><divclass="seeAlsoStyle"><ahref="96c4a09e-3f83-00ab-30d0-78a82764b0ce.htm">gmp_lib<spanid="LST8CFCCA5C_13"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_13?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_get_prec(mpf_t)</a></div><divclass="seeAlsoStyle"><ahref="438e6843-fc7b-4e6f-9ac0-d97a2773b032.htm">gmp_lib<spanid="LST8CFCCA5C_14"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_14?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpf_set_prec(mpf_t, mp_bitcnt_t)</a></div><divclass="seeAlsoStyle"><ahref="b456f637-83f4-9d4f-18c5-052d77fbf981.htm">gmp_lib<spanid="LST8CFCCA5C_15"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST8CFCCA5C_15?cs=.|vb=.|cpp=::|nu=.|fs=.");</scr
