Table of Contents



Logarithmic and Exponential Functions

These functions calculate exponentials and logarithms.

e()

Returns Euler's number.

Argument Type Description
none No arguments.

Returns: number.

Example: 

e();
log(e());       // 1

exp(x)

Returns Euler's number raised to `x`.

Argument Type Description
`x` number Exponent.

Returns: number.

Example: 

exp(1);         // e

exp10(x)

Returns 10 raised to `x`.

Argument Type Description
`x` number Exponent.

Returns: number.

Example: 

exp10(3);       // 1000

exp2(x)

Returns 2 raised to `x`.

Argument Type Description
`x` number Exponent.

Returns: number.

Example: 

exp2(8);        // 256

expm1(x)

Returns `exp(x) - 1`.

Argument Type Description
`x` number Exponent.

Returns: number.

This form is useful for small values where `exp(x) - 1` would lose precision.

Example: 

expm1(0);       // 0

log(x)

Returns the natural logarithm of `x`.

Argument Type Description
`x` number Input value. Must be greater than zero.

Returns: number.

Example: 

log(e());       // 1

log10(x)

Returns the base-10 logarithm of `x`.

Argument Type Description
`x` number Input value. Must be greater than zero.

Returns: number.

Example: 

log10(1000);    // 3

log1p(x)

Returns `log(1 + x)`.

Argument Type Description
`x` number Input value. Must be greater than `-1`.

Returns: number.

This form is useful for small values of `x`.

Example: 

log1p(0);       // 0

log2(x)

Returns the base-2 logarithm of `x`.

Argument Type Description
`x` number Input value. Must be greater than zero.

Returns: number.

Example: 

log2(256);      // 8

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