rizzo - v0.1.0

rational

Types

Rational

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pub opaque type Rational

Functions

absolute_value

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pub fn absolute_value(a: Rational) -> Rational

add

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pub fn add(a: Rational, b: Rational) -> Rational

Adds two rational numbers.

compare

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pub fn compare(a: Rational, b: Rational) -> Order

Compares two rational numbers, returning an Order type that describes their relationship

divide

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pub fn divide(a: Rational, b: Rational) -> Result(Rational, Nil)

from_float

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pub fn from_float(from f: Float, to_nearest inc: Rational) -> Rational

Creates a new rational number from a float, rounding it to the nearest rational increment.

from_int

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pub fn from_int(from: Int) -> Rational

Creates a new rational number from an integer.

multiply

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pub fn multiply(a: Rational, b: Rational) -> Rational

Multiplies two rational numbers.

new

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pub fn new(num: Int, den: Int) -> Result(Rational, Nil)

Creates a new rational number from a numerator (top of the fraction) and denominator (bottom).

new_improper

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pub fn new_improper(whole: Int, num: Int, den: Int) -> Result(
  Rational,
  Nil,
)

Creates a new rational number from an improper fraction, which has a whole number part as well as a numerator and denominator.

pow

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pub fn pow(a: Rational, n: Int) -> Rational

reciprocal

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pub fn reciprocal(a: Rational) -> Rational

subtract

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pub fn subtract(a: Rational, b: Rational) -> Rational

Subtracts two rational numbers.

to_float

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pub fn to_float(r: Rational) -> Float

Returns the neaerest float to the rational number.

to_mixed_fraction

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pub fn to_mixed_fraction(r: Rational) -> #(Int, Rational)

Takes a rational number and returns it as a tuple representing a mixed fraction, with a whole part and a fractional part.

truncate

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pub fn truncate(r: Rational) -> Int
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