Python | Decimal compare_signal() method

Last Updated : 19 Sep, 2021

Decimal#compare_signal() : compare_signal() is a Decimal class method which compares th two Decimal values, except for the NaN values.

Syntax: Decimal.compare_signal()
Parameter: Decimal values
Return:
1 - if a > b
-1 - if a < b
0 - if a = b

Code #1 : Example for compare_signal() method

Python3

# Python Program explaining 
# compare_signal() method

# loading decimal library
from decimal import *


# Initializing a decimal value
a = Decimal('0.142857')

b = Decimal(-1)


# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)


# Using Decimal.compare_signal() method
print ("\n\nDecimal a with compare_signal() method : ", a.compare_signal(a))

print ("Decimal a with compare_signal() method : ", a.compare_signal(b))

print ("Decimal b with compare_signal() method : ", b.compare_signal(a))

Output :

Decimal value a :  0.142857
Decimal value b :  -1


Decimal a with compare_signal() method :  0
Decimal a with compare_signal() method :  1
Decimal b with compare_signal() method :  -1

Code #2 : Example for compare_signal() method

Python3

# Python Program explaining 
# compare_signal() method

# loading decimal library
from decimal import *


# Initializing a decimal value
a = Decimal('-3.14')

b = Decimal('321e + 5')

# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)


# Using Decimal.compare_signal() method
print ("\n\nDecimal a with compare_signal() method : ", a.compare_signal(a))

print ("Decimal a with compare_signal() method : ", a.compare_signal(b))

print ("Decimal b with compare_signal() method : ", b.compare_signal(a))

Output :

Decimal value a :  -3.14
Decimal value b :  3.21E+7


Decimal a with compare_signal() method :  0
Decimal a with compare_signal() method :  -1
Decimal b with compare_signal() method :  1