在python中将类型从BigFloat转换为Float

我正在使用python中的BigFloat库计算exp。但是我必须计算一个大浮点数矩阵的逆。我使用函数

numpy.linalg.inv

，但我得到以下错误：

找不到与指定签名和强制转换匹配的循环 ufunc投资公司

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所以我想说我需要将BigFloat转换成其他类型。我该怎么做呢？

考虑一个大浮点值的二维列表（带exp）：

结果:

A single element in bigfloat: 
    2.71828182845904523536028747135266249775724709369995957496696762772407663035354759457138217852516642742746639193200305992181741359662904357290033429526059563073813232862794349076323382988075319525101901157383418793070215408914993488416750924476146066808226480016847741185374234544243710753907774499206950

Numpived matrix of bigfloat: 
[[ 2.71828183  1.64872127  1.39561243  1.28402542]
 [ 1.64872127  1.39561243  1.28402542  1.22140276]
 [ 1.39561243  1.28402542  1.22140276  1.18136041]
 [ 1.28402542  1.22140276  1.18136041  1.15356499]]

Inverse of numpivized bigfloat matrix: 
[[    3.82106765   -30.68951855    61.37113204   -34.60880961]
 [  -30.68951855   385.05574805  -890.19682475   538.10687764]
 [   61.37113204  -890.19682475  2211.11911647 -1390.16166038]
 [  -34.60880961   538.10687764 -1390.16166038   893.29628089]]

应用逐点

float（）

操作。大浮点覆盖

A single element in bigfloat: 
    2.71828182845904523536028747135266249775724709369995957496696762772407663035354759457138217852516642742746639193200305992181741359662904357290033429526059563073813232862794349076323382988075319525101901157383418793070215408914993488416750924476146066808226480016847741185374234544243710753907774499206950

Numpived matrix of bigfloat: 
[[ 2.71828183  1.64872127  1.39561243  1.28402542]
 [ 1.64872127  1.39561243  1.28402542  1.22140276]
 [ 1.39561243  1.28402542  1.22140276  1.18136041]
 [ 1.28402542  1.22140276  1.18136041  1.15356499]]

Inverse of numpivized bigfloat matrix: 
[[    3.82106765   -30.68951855    61.37113204   -34.60880961]
 [  -30.68951855   385.05574805  -890.19682475   538.10687764]
 [   61.37113204  -890.19682475  2211.11911647 -1390.16166038]
 [  -34.60880961   538.10687764 -1390.16166038   893.29628089]]