条件变量sign函数
时间: 2023-09-02 21:11:19 浏览: 54
sign函数是一个数值计算函数,用于返回一个数字的符号。如果数字是正数,则返回1;如果数字是负数,则返回-1;如果数字是0,则返回0。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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