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<html><head><title>VM Spec </title></head><body BGCOLOR=#eeeeff text=#000000 LINK=#0000ff VLINK=#000077 ALINK=#ff0000> <a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc87.html">Prev</a> | <a href="Instructions2.doc89.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><hr><br> <a name="idiv"></a><h2>idiv</h2><a name="idiv.Operation"></a><b>Operation</b><br><a name="68497"></a>Divide <code>int</code><p><Table Border="3"><tr><td><a name="68496"></a> <i>idiv</i><td><a name="87568"></a> </Table><Table><tr><td></Table><p><a name="idiv.Forms"></a><b>Forms</b><br><a name="68498"></a><i>idiv</i> = 108 (0x6c)<p><a name="idiv.Stack"></a><b>Stack</b><br><a name="68499"></a>..., <i>value1</i><em>, </em><i>value2</i> <img src="chars/arrwdbrt.gif"> ..., <i>result</i><p><a name="idiv.Description"></a><b>Description</b><br><a name="68500"></a>Both <i>value1</i> and <i>value2</i> must be of type <code>int</code>. The values are popped from the operand stack. The <code>int</code> <i>result</i> is the value of the Java expression <i>value1</i> / <i>value2</i>. The <i>result</i> is pushed onto the operand stack.<p><a name="68501"></a>An <code>int</code> division rounds towards 0; that is, the quotient produced for <code>int</code> values in <i>n</i>/<i>d</i> is an <code>int</code> value <i>q</i> whose magnitude is as large as possible while satisfying <img src="Instructions2.doc.anc6.gif">. Moreover, <i>q </i>is positive when <img src="Instructions2.doc.anc7.gif"> and <i>n</i> and <i>d</i> have the same sign, but <i>q</i> is negative when <img src="Instructions2.doc.anc8.gif"> and <i>n</i> and <i>d </i>have opposite signs. <p><a name="68511"></a>There is one special case that does not satisfy this rule: if the dividend is the negative integer of largest possible magnitude for the <code>int</code> type, and the divisor is -<i>1</i>, then overflow occurs, and the result is equal to the dividend. Despite the overflow, no exception is thrown in this case. <p><a name="idiv.Runtime"></a><b>Runtime Exception</b><br><a name="68513"></a>If the value of the divisor in an <code>int</code> division is 0, <i>idiv</i> throws an <code>ArithmeticException</code>.<p><hr><!-- This inserts footnotes--><p><a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc87.html">Prev</a> | <a href="Instructions2.doc89.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><p><font size=-1>Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)<br><i><a href="Copyright.doc.html">Copyright © 1996 Sun Microsystems, Inc.</a>All rights reserved</i><br>Please send any comments or corrections to <a href="mailto:doug.kramer@sun.com">doug.kramer@sun.com</a></font></body></html>⌨️ 快捷键说明
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