How to Find Mantissa and Exponent using frexp() Function in Python

Python math Library, Python Reference

math.frexp() function exists in Standard math Library of Python Programming Language. This function returns mantissa and exponent as a pair (m, e) of a given value x, where mantissa m is a floating point number and e exponent is an integer value.
 

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Syntax of frexp() Function in Python

The syntax of frexp() function in Python is:
math.frexp( x )

 

Parameters of frexp() in Python

x Any valid Python number (positive or negative). This parameter is required.
Note: if the x parameter is not a number, frexp() function will return a TypeError.

 

Python frexp() Function Compatibility

Python 2.x – Yes
Python 3.x – Yes

 

Return Value of frexp() Function in Python

frexp() returns mantissa and exponent as a pair (m, e) value of a given number x. Mantissa (m) is floating point number and exponent (e) is an integer.

 

Python frexp() Function Example

# import math library
import math

print(math.frexp(25))
print(math.frexp(20.3))
print(math.frexp(-20))
print(math.frexp(-13.6))

 
The output of Python frexp() Function:
(0.78125, 5)
(0.634375, 5)
(-0.625, 5)
(-0.85, 4)
 
Note that in output all the numbers whether they are negative or positive are converted into a pair value (m, e), where m, mantissa, is floating point number and e, exponent, is an integer.