Enum FloorRule 

pub enum FloorRule {
    Shift,
    Scaled,
}

How ⌊ and ⌈ read a value that is merely near the integer above or below it.

GNU APL shifts by ⎕CT outright, so ⌊99.999999999995 is 99 — a gap of 5E¯12 is larger than the tolerance however big the value is — while ⌊¯1E¯13 is 0. Dyalog scales the shift by the magnitude but never below 1, so ⌊9.9999999999999 is 10 and ⌊¯1E¯13 is ¯1.

Variants

Shift

GNU APL: ⌊y+⎕CT, an absolute shift.

Scaled

Dyalog: ⌊y+⎕CT×1⌈|y, a shift that grows with the magnitude.

Trait Implementations

impl Clone for FloorRule

fn clone(&self) -> FloorRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FloorRule

impl Debug for FloorRule

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

Formats the value using the given formatter.

impl Default for FloorRule

fn default() -> FloorRule

Returns the “default value” for a type.

impl Eq for FloorRule

impl PartialEq for FloorRule

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FloorRule