当前位置: 首页>>代码示例 >>用法及示例精选 >>正文


Python numpy.finfo()用法及代码示例


numpy.finfo()函数显示浮点类型的机器限制。

用法: numpy.finfo(dtype)

参数:
dtype:[float,dtype或instance]要获取有关其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
---------------------------------------------------------------

相关用法


注:本文由纯净天空筛选整理自sanjoy_62大神的英文原创作品 numpy.finfo() function – Python。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。