Python numpy.nextafter()用法及代碼示例

numpy.nextafter(arr1，arr2，out = None，where = True，cast ='same_kind'，order ='K'，dtype = None)：此數學函數可幫助用戶將arr1之後的下一個浮點值返回給arr2，在元素方麵。

參數：
arr1 : [array_like]Input array, values to find next value of.
arr2 : [array_like]Input array, values in which direction to look for.
out : [ndarray, optional]Output array with same dimensions as Input array, placed with result.
**kwargs: Allows you to pass keyword variable length of argument to a function. It is used when we want to handle named argument in a function.
where : [array_like, optional]True value means to calculate the universal functions(ufunc) at that position, False value means to leave the value in the output alone.

返回： next floating-point value of arr1 in the direcrion of arr2.

碼：

# Python program illustrating  
# nextafter() method  
import numpy as np  
  
arr1 = 3
arr2 = 4
  
print ("arr1:", arr1) 
print ("arr2:", arr2) 
  
print ("\nCheck sign of arr1:", np.nextafter(arr1, arr2))

輸出：

arr1: 3
arr2: 4

Check sign of arr1: 3.0000000000000004