expm1() returns e raised to the power x ( input number ) -1 .
Here are some examples with different type of numbers.
Using negative number
print(math.expm1(5)) # 147.4131591025766
print(math.expm1(0)) # 0.0
print(math.expm1(-34.11)) # -0.9999999999999984
print(math.expm1(-34.99)) # -0.9999999999999993
print(math.expm1(-34)) # -0.9999999999999983
Using formula and e
The math formula for expm1() function is e ** x -1
e : is a numerical constant of value equal to 2.71828
print(math.e ** -34.11 -1 ) # -0.9999999999999984
This is the base of natural logarithm and known as Euler's number.
floor() & ceil() modf() exp()
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