Decimal#ln() : ln() is a Decimal class method which returns the natural (base e) logarithm of the Decimal value.
Syntax: Decimal.ln()
Parameter: Decimal values
Return: the natural (base e) logarithm of the Decimal value.
Code #1 : Example for ln() method
# Python Program explaining # ln() method # loading decimal library from decimal import * # Initializing a decimal value a = Decimal('.9932') b = Decimal('0.142857') # printing Decimal values print ("Decimal value a : ", a) print ("Decimal value b : ", b) # Using Decimal.ln() method print ("\n\nDecimal a with ln() method : ", a.ln()) print ("Decimal b with ln() method : ", b.ln()) |
Output :
Decimal value a : 0.9932 Decimal value b : 0.142857 Decimal a with ln() method : -0.006823225348125508334064182053 Decimal b with ln() method : -1.945911149055813305438686327
Code #2 : Example for ln() method
# Python Program explaining # ln() 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.ln() method print ("\n\nDecimal a with ln() method : ", a.ln()) print ("Decimal b with ln() method : ", b.ln()) |
Output :
Decimal value a : 3.14 Decimal value b : 3.21E+7 Decimal a with ln() method : 1.144222799920161998805694448 Decimal b with ln() method : 17.28436658810024428478960133
