Logarithmic and Exponential Functions

These functions calculate exponentials and logarithms.

Returns Euler's number.

Returns: number.

Example:

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

Returns Euler's number raised to `x`.

Returns: number.

Example:

exp(1);         // e

Returns 10 raised to `x`.

Returns: number.

Example:

exp10(3);       // 1000

Returns 2 raised to `x`.

Returns: number.

Example:

exp2(8);        // 256

Returns `exp(x) - 1`.

Returns: number.

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

Example:

expm1(0);       // 0

Returns the natural logarithm of `x`.

Returns: number.

Example:

log(e());       // 1

Returns the base-10 logarithm of `x`.

Returns: number.

Example:

log10(1000);    // 3

Returns `log(1 + x)`.

Returns: number.

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

Example:

log1p(0);       // 0

Returns the base-2 logarithm of `x`.

Returns: number.

Example:

log2(256);      // 8

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