numpy.finfo()函数–Python
原文:https://www.geeksforgeeks.org/numpy-finfo-function-python/
numpy.finfo() 功能显示浮点类型的机器限制。
语法:num py . finfo(dttype)
参数: 数据类型:【浮点、数据类型或实例】获取信息的浮点数据类型的种类。 返回:浮点类型的机器参数。
代码#1 :
# Python program explaining
# numpy.finfo() function
# importing numpy as geek
import numpy as geek
gfg = geek.finfo(geek.float32)
print (gfg)
输出:
Machine parameters for float32
---------------------------------------------------------------
precision = 6 resolution = 1.0000000e-06
machep = -23 eps = 1.1920929e-07
negep = -24 epsneg = 5.9604645e-08
minexp = -126 tiny = 1.1754944e-38
maxexp = 128 max = 3.4028235e+38
nexp = 8 min = -max
---------------------------------------------------------------
代码#2 :
# Python program explaining
# numpy.finfo() function
# importing numpy as geek
import numpy as geek
gfg = geek.finfo(geek.float64)
print (gfg)
输出:
Machine parameters for float64
---------------------------------------------------------------
precision = 15 resolution = 1.0000000000000001e-15
machep = -52 eps = 2.2204460492503131e-16
negep = -53 epsneg = 1.1102230246251565e-16
minexp = -1022 tiny = 2.2250738585072014e-308
maxexp = 1024 max = 1.7976931348623157e+308
nexp = 11 min = -max
---------------------------------------------------------------
