- 类别：
数值函数 （三角函数）
ATANH¶
计算其实参的反双曲正切值。
语法¶
ATANH( <input_expr> )
实参¶
input_exprThe value or expression to operate on. Must be a value between -1.0 and +1.0 (inclusive). The data type must be FLOAT.
返回¶
This function returns a value of type FLOAT.
示例¶
SELECT ATANH(0.9051482536);
+---------------------+
| ATANH(0.9051482536) |
|---------------------|
| 1.5 |
+---------------------+