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Enum std::num::FpCategory

pub enum FpCategory {
    Nan,
    Infinite,
    Zero,
    Subnormal,
    Normal,
}

A classification of floating point numbers.

This enum is used as the return type for f32::classify and f64::classify. See their documentation for more.

Examples

use std::num::FpCategory;
use std::f32;

let num = 12.4_f32;
let inf = f32::INFINITY;
let zero = 0f32;
let sub: f32 = 1.1754942e-38;
let nan = f32::NAN;

assert_eq!(num.classify(), FpCategory::Normal);
assert_eq!(inf.classify(), FpCategory::Infinite);
assert_eq!(zero.classify(), FpCategory::Zero);
assert_eq!(nan.classify(), FpCategory::Nan);
assert_eq!(sub.classify(), FpCategory::Subnormal);

Variants

Nan

"Not a Number", often obtained by dividing by zero.

Infinite

Positive or negative infinity.

Zero

Positive or negative zero.

Subnormal

De-normalized floating point representation (less precise than Normal).

Normal

A regular floating point number.

Trait Implementations

`impl Clone for FpCategory` [src]

`fn clone(&self) -> FpCategory` [src]

Returns a copy of the value. Read more

`fn clone_from(&mut self, source: &Self)` [src]

Performs copy-assignment from source. Read more

`impl Eq for FpCategory` [src]

`impl Copy for FpCategory` [src]

`impl PartialEq<FpCategory> for FpCategory` [src]

`fn eq(&self, __arg_0: &FpCategory) -> bool` [src]

This method tests for self and other values to be equal, and is used by ==. Read more

`fn ne(&self, other: &Rhs) -> bool` [src]

This method tests for !=.

`impl Debug for FpCategory` [src]

`fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>` [src]

Formats the value using the given formatter. Read more

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/num/enum.FpCategory.html

Enum std::num::FpCategory

Examples

Variants

Trait Implementations

impl Clone for FpCategory [src]

fn clone(&self) -> FpCategory [src]

fn clone_from(&mut self, source: &Self) [src]

impl Eq for FpCategory [src]

impl Copy for FpCategory [src]

impl PartialEq<FpCategory> for FpCategory [src]

fn eq(&self, __arg_0: &FpCategory) -> bool [src]

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

impl Debug for FpCategory [src]

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error> [src]