expm1

Menghitung eksponensial nilai yang diberikan dikurangi satu. Mendukung Spark Connect.

Untuk fungsi Databricks SQL yang sesuai, lihat expm1 fungsi.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.expm1(col=<col>)

Parameter-parameternya

Pengaturan	Tipe	Description
col	pyspark.sql.Column or column name	kolom untuk menghitung eksponensial.

Pengembalian Barang

pyspark.sql.Column: kurang eksponensial satu.

Examples

from pyspark.databricks.sql import functions as dbf
df = spark.sql("SELECT id AS value FROM RANGE(5)")
df.select("*", dbf.expm1(df.value)).show()

+-----+------------------+
|value|      EXPM1(value)|
+-----+------------------+
|    0|               0.0|
|    1| 1.718281828459...|
|    2|  6.38905609893...|
|    3|19.085536923187...|
|    4|53.598150033144...|
+-----+------------------+

from pyspark.databricks.sql import functions as dbf
spark.sql(
    "SELECT * FROM VALUES (FLOAT('NAN')), (NULL) AS TAB(value)"
).select("*", dbf.expm1("value")).show()

+-----+------------+
|value|EXPM1(value)|
+-----+------------+
|  NaN|         NaN|
| NULL|        NULL|
+-----+------------+