Python Math: Print the floating point from mantissa, exponent pair

Last update on April 02 2025 12:29:18 (UTC/GMT +8 hours)

58. Mantissa and Exponent Printer

Write a Python program to print the floating point of the mantissa, exponent pair.

Sample Solution:

Python Code:

import math

print('{:^7}  {:^8}  {:^17}'.format('Mantissa', 'Exponent', 'Floating point value'))
print('{:-^8}  {:-^8}  {:-^20}'.format('', '', ''))

for m, e in [ (0.7, -3),
              (0.3,  0),
              (0.5,  3),
              ]:
    x = math.ldexp(m, e)
    print('{:7.2f}  {:7d}  {:7.2f}'.format(m, e, x))
	

Sample Output:

Mantissa  Exponent  Floating point value                                                                      
--------  --------  --------------------                                                                      
   0.70       -3     0.09                                                                                     
   0.30        0     0.30                                                                                     
   0.50        3     4.00
   

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to use math.frexp() to decompose a floating-point number into its mantissa and exponent, and print them.
• Write a Python function that takes a float, retrieves its mantissa and exponent, and returns a formatted string displaying both values.
• Write a Python script to iterate over a list of floating-point numbers, print each number’s mantissa and exponent, and then convert them back to the original number.
• Write a Python program to display the mantissa and exponent of several floating-point values in a tabulated format using math.frexp().

Python Code Editor:

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