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COSH

描述

返回 x 的双曲余弦。

语法

COSH(<x>)

参数

参数说明
<x>需要被计算双曲余弦的值

返回值

参数 x 的双曲余弦值

特殊情况

  • xNaN,返回 NaN
  • x 为正无穷,返回 Infinity
  • x 为负无穷,返回 Infinity
  • xNULL,返回 NULL

示例

select cosh(0);
+-------------------------+
| cosh(cast(0 as DOUBLE)) |
+-------------------------+
| 1.0 |
+-------------------------+
select cosh(1);
+-------------------------+
| cosh(cast(1 as DOUBLE)) |
+-------------------------+
| 1.543080634815244 |
+-------------------------+
select cosh(-1);
+--------------------------+
| cosh(cast(-1 as DOUBLE)) |
+--------------------------+
| 1.543080634815244 |
+--------------------------+
select cosh(cast('nan' as double));
+-----------------------------+
| cosh(cast('nan' AS DOUBLE)) |
+-----------------------------+
| NaN |
+-----------------------------+
select cosh(cast('inf' as double));
+-----------------------------+
| cosh(cast('inf' AS DOUBLE)) |
+-----------------------------+
| Infinity |
+-----------------------------+
select cosh(cast('-inf' as double));
+------------------------------+
| cosh(cast('-inf' AS DOUBLE)) |
+------------------------------+
| Infinity |
+------------------------------+