Enum GcdRule 

pub enum GcdRule {
    Tolerant,
    Exact,
}

Which line’s ∨ and ∧ these are.

GNU APL’s GCD reads three things loosely, all probed against it: a zero argument hands its partner back with the sign (¯3∨0 is ¯3, though ¯3.5∨0 is 3.5 — only whole numbers keep it); an argument within ⎕CT of a whole number is that number (1.0000000000001∧5 is 5); and one no larger than ⎕CT beside the other is zero (1E¯14∨1 is 1). Dyalog does none of the three, and neither does J: ¯3∨0 is 3 there, 1E¯14∨1 is 1E¯14, and 1.0000000000001∧5 grinds out 1.0008E13.

Variants

Tolerant

GNU APL: whole-number sign kept, near-whole and vanishing arguments rounded first.

Exact

Dyalog and J: the magnitude, and the values as they stand.

Trait Implementations

impl Clone for GcdRule

fn clone(&self) -> GcdRule

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for GcdRule

impl Debug for GcdRule

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

Formats the value using the given formatter.

impl Default for GcdRule

fn default() -> GcdRule

Returns the “default value” for a type.

impl Eq for GcdRule

impl PartialEq for GcdRule

fn eq(&self, other: &GcdRule) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for GcdRule