</pre></div></div></div><scripttype="text/javascript">AddLanguageTabSet("ID0EDCA");</script><h4class="subHeading">Parameters</h4><dl><dt><spanclass="parameter">sum</span></dt><dd>Type:<ahref="635f1879-5f85-881e-cca8-3222baf5045a.htm">Math.Gmp.Native<spanid="LST397C7D7_1"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST397C7D7_1?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpq_t</a><br/>The result rational.</dd><dt><spanclass="parameter">addend1</span></dt><dd>Type:<ahref="635f1879-5f85-881e-cca8-3222baf5045a.htm">Math.Gmp.Native<spanid="LST397C7D7_2"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST397C7D7_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpq_t</a><br/>The first operand rational.</dd><dt><spanclass="parameter">addend2</span></dt><dd>Type:<ahref="635f1879-5f85-881e-cca8-3222baf5045a.htm">Math.Gmp.Native<spanid="LST397C7D7_3"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST397C7D7_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpq_t</a><br/>The second operand rational.</dd></dl></div><divclass="collapsibleAreaRegion"><spanclass="collapsibleRegionTitle"onclick="SectionExpandCollapse('ID2RB')"onkeypress="SectionExpandCollapse_CheckKey('ID2RB', event)"tabindex="0"><imgid="ID2RBToggle"class="collapseToggle"src="../icons/SectionExpanded.png"/>Examples</span></div><divid="ID2RBSection"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"></pre></div><divid="ID0EDAABA_code_Div2"class="codeSnippetContainerCode"style="display: none"><prexml:space="preserve"></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('ID3RB')"onkeypress="SectionExpandCollapse_CheckKey('ID3RB', event)"tabindex="0"><imgid="ID3RBToggle"class="collapseToggle"src="../icons/SectionExpanded.png"/>See Also</span></div><divid="ID3RBSection"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="e7d65cf6-2ee4-c983-62b5-4ad66f1d8599.htm">gmp_lib<spanid="LST397C7D7_4"></span><scripttype="text/javascript">AddLanguageSpecificTextSet("LST397C7D7_4?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>mpq_sub(mpq_t, mpq_t, mpq_t)</a></div><divclass="seeAlsoStyle"><ahref="584834ae-b1f7-d965-2586-f88d5c9b4f67.htm">gmp_lib<spanid="LST397C7D7_5"></span><scripttype="text/javascript">AddLang