bigdecimal - v1.0.0

bigdecimal

Types

BigDecimal

opaque </> 
pub opaque type BigDecimal

Functions

absolute_value

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pub fn absolute_value(of value: BigDecimal) -> BigDecimal

add

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pub fn add(augend: BigDecimal, addend: BigDecimal) -> BigDecimal

clamp

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pub fn clamp(
  value: BigDecimal,
  min min: BigDecimal,
  max max: BigDecimal,
) -> BigDecimal

N.B. if the input has equal value to either of the extremes but different precision, the larger precision will be returned

compare

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pub fn compare(this: BigDecimal, with that: BigDecimal) -> Order

N.B. If scale is different, trailing zeros are ignored.

divide

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pub fn divide(
  dividend: BigDecimal,
  by divisor: BigDecimal,
  rounding rounding: RoundingMode,
) -> BigDecimal

Divide the dividend by the divisor. The result has a preferred scale of scale(dividend) - scale(divisor), but might have scale up to precision(dividend) + ceil(10 * precision(divisor) / 3).

from_float

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pub fn from_float(value: Float) -> BigDecimal

from_string

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pub fn from_string(value: String) -> Result(BigDecimal, Nil)

multiply

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pub fn multiply(
  multiplicand: BigDecimal,
  with multiplier: BigDecimal,
) -> BigDecimal

negate

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pub fn negate(value: BigDecimal) -> BigDecimal

one

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pub fn one() -> BigDecimal

power

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pub fn power(
  value: BigDecimal,
  exponent: Int,
) -> Result(BigDecimal, Nil)

Returns an error if the exponent is negative. (Inherited behaviour from bigi)

precision

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pub fn precision(of value: BigDecimal) -> Int

The number of digits in the unscaled value.

product

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pub fn product(values: List(BigDecimal)) -> BigDecimal

For an empty list, this will return one().

rescale

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pub fn rescale(
  value: BigDecimal,
  scale new_scale: Int,
  rounding rounding: RoundingMode,
) -> BigDecimal

scale

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pub fn scale(of value: BigDecimal) -> Int

signum

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pub fn signum(of value: BigDecimal) -> Int

Sign function. Returns +1 if the value is positive, -1 if the value is negative, 0 if the value is zero.

subtract

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pub fn subtract(
  minuend: BigDecimal,
  subtrahend: BigDecimal,
) -> BigDecimal

sum

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pub fn sum(values: List(BigDecimal)) -> BigDecimal

ulp

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pub fn ulp(of value: BigDecimal) -> BigDecimal

Returns the unit of least precision of this BigDecimal.

unscaled_value

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pub fn unscaled_value(of value: BigDecimal) -> BigInt

zero

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pub fn zero() -> BigDecimal
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