Struct Consts 

pub struct Consts { /* private fields */ }

Constants cache contains arbitrary-precision mathematical constants.

Implementations

impl Consts

In an ideal situation, the Consts structure is initialized with Consts::new only once, and then used where needed.

pub fn new() -> Result<Consts, Error>

Initializes the constants cache.

Errors

• MemoryAllocation: failed to allocate memory for mantissa.

pub fn pi(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Returns the value of the pi number with precision p using rounding mode rm. Precision is rounded upwards to the word size.

pub fn e(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Returns the value of the Euler number with precision p using rounding mode rm. Precision is rounded upwards to the word size.

pub fn ln_2(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Returns the value of the natural logarithm of 2 with precision p using rounding mode rm. Precision is rounded upwards to the word size.

pub fn ln_10(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Returns the value of the natural logarithm of 10 with precision p using rounding mode rm. Precision is rounded upwards to the word size.

pub fn cache_info(&self) -> ConstCacheInfo

How many bits of each series / extra constant are currently retained.

pub fn sqrt2(&mut self, p: usize, rm: RoundingMode) -> ExactNum

√2 with precision p using rounding mode rm. Higher requests extend the cache; lower requests reuse it.

pub fn phi(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Golden ratio φ = (1+√5)/2 with precision p using rounding mode rm. Higher requests extend the cache; lower requests reuse it.

pub fn euler_gamma(&mut self, p: usize, rm: RoundingMode) -> ExactNum

Euler–Mascheroni constant γ with precision p using rounding mode rm.

Trait Implementations

impl Debug for Consts

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.