Struct EvenFn 

pub struct EvenFn;

Trait Implementations

impl Debug for EvenFn

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

Formats the value using the given formatter.

impl Function for EvenFn

Rounds a number away from zero to the nearest even integer.

Remarks

• Values already equal to an even integer stay unchanged.
• Positive and negative values both move away from zero.
• 0 returns 0.

Examples

title: "Round a positive number to even"
formula: "=EVEN(3)"
expected: 4

title: "Round a negative number away from zero"
formula: "=EVEN(-1.1)"
expected: -2

related:
  - ODD
  - ROUNDUP
  - MROUND
faq:
  - q: "Does EVEN ever round toward zero?"
    a: "No. It always rounds away from zero to the nearest even integer."

[formualizer-docgen:schema:start] Name: EVEN Type: EvenFn Min args: 1 Max args: 1 Variadic: false Signature: EVEN(arg1: number@scalar) Arg schema: arg1{kinds=number,required=true,shape=scalar,by_ref=false,coercion=NumberLenientText,max=None,repeating=None,default=false} Caps: PURE [formualizer-docgen:schema:end]

fn caps(&self) -> FnCaps

Capability flags for this function

fn name(&self) -> &'static str

fn min_args(&self) -> usize

fn arg_schema(&self) -> &'static [ArgSchema]

fn eval<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], _: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

The unified evaluation path.

fn namespace(&self) -> &'static str

fn variadic(&self) -> bool

fn volatile(&self) -> bool

fn aliases(&self) -> &'static [&'static str]

Optional list of additional alias names (case-insensitive) that should resolve to this function. Default: empty slice. Implementors can override to expose legacy names. Returned slice must have ’static lifetime (typically a static array reference).

fn function_salt(&self) -> u64

fn eval_reference<'a, 'b, 'c>( &self, _args: &'c [ArgumentHandle<'a, 'b>], _ctx: &dyn FunctionContext<'b>, ) -> Option<Result<ReferenceType, ExcelError>>

Optional reference result path. Only called by the interpreter/engine when the callsite expects a reference (e.g., range combinators, by-ref argument positions, or spill sources).

fn dispatch<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

Dispatch to the unified evaluation path with automatic argument validation.