math.expm1() function
The math.expm1()
function returns e**x - 1
, the base-e exponential of x
minus 1.
It is more accurate than math.exp(x:x) - 1
when x
is near zero.
Output data type: Float
import "math"
math.expm1(x: 1.22)
// Returns 2.3871877336213343
Parameters
x
The value used in the operation.
Data type: Float
Special cases
math.expm1(+Inf) // Returns +Inf
math.expm1(-Inf) // Returns -1
math.expm1(NaN) // Returns NaN
Very large values overflow to -1 or +Inf.
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