Trait rust_decimal::MathematicalOps[−][src]

pub trait MathematicalOps {

Show methods    fn exp(&self) -> Decimal;

    fn checked_exp(&self) -> Option<Decimal>;

    fn exp_with_tolerance(&self, tolerance: Decimal) -> Decimal;

    fn checked_exp_with_tolerance(&self, tolerance: Decimal) -> Option<Decimal>;

    fn powi(&self, exp: i64) -> Decimal;

    fn checked_powi(&self, exp: i64) -> Option<Decimal>;

    fn powu(&self, exp: u64) -> Decimal;

    fn checked_powu(&self, exp: u64) -> Option<Decimal>;

    fn powf(&self, exp: f64) -> Decimal;

    fn checked_powf(&self, exp: f64) -> Option<Decimal>;

    fn powd(&self, exp: Decimal) -> Decimal;

    fn checked_powd(&self, exp: Decimal) -> Option<Decimal>;

    fn sqrt(&self) -> Option<Decimal>;

    fn ln(&self) -> Decimal;

    fn erf(&self) -> Decimal;

    fn norm_cdf(&self) -> Decimal;

    fn norm_pdf(&self) -> Decimal;

    fn checked_norm_pdf(&self) -> Option<Decimal>;

}
Expand description

Trait exposing various mathematical operations that can be applied using a Decimal. This is only present when the maths feature has been enabled.

Required methods

The estimated exponential function, ex. Stops calculating when it is within tolerance of roughly 0.0000002.

The estimated exponential function, ex. Stops calculating when it is within tolerance of roughly 0.0000002. Returns None on overflow.

The estimated exponential function, ex using the tolerance provided as a hint as to when to stop calculating. A larger tolerance will cause the number to stop calculating sooner at the potential cost of a slightly less accurate result.

The estimated exponential function, ex using the tolerance provided as a hint as to when to stop calculating. A larger tolerance will cause the number to stop calculating sooner at the potential cost of a slightly less accurate result. Returns None on overflow.

Raise self to the given integer exponent: xy

Raise self to the given integer exponent xy returning None on overflow.

Raise self to the given unsigned integer exponent: xy

Raise self to the given unsigned integer exponent xy returning None on overflow.

Raise self to the given floating point exponent: xy

Raise self to the given floating point exponent xy returning None on overflow.

Raise self to the given Decimal exponent: xy. If exp is not whole then the approximation ey*ln(x) is used.

Raise self to the given Decimal exponent xy returning None on overflow. If exp is not whole then the approximation ey*ln(x) is used.

The square root of a Decimal. Uses a standard Babylonian method.

The natural logarithm for a Decimal. Uses a fast estimation algorithm This is more accurate on larger numbers and less on numbers less than 1.

Abramowitz Approximation of Error Function from wikipedia

The Cumulative distribution function for a Normal distribution

The Probability density function for a Normal distribution.

The Probability density function for a Normal distribution returning None on overflow.

Implementors