---
title: binade
framework: swift
role: symbol
role_heading: Instance Property
path: swift/double/binade
---

# binade

The floating-point value with the same sign and exponent as this value, but with a significand of 1.0.

## Declaration

```swift
var binade: Double { get }
```

## Discussion

Discussion A binade is a set of binary floating-point values that all have the same sign and exponent. The binade property is a member of the same binade as this value, but with a unit significand. In this example, x has a value of 21.5, which is stored as 1.34375 * 2**4, where ** is exponentiation. Therefore, x.binade is equal to 1.0 * 2**4, or 16.0. let x = 21.5 // x.significand == 1.34375 // x.exponent == 4

let y = x.binade // y == 16.0 // y.significand == 1.0 // y.exponent == 4

## See Also

### Querying a Double

- [ulp](swift/double/ulp.md)
- [significand](swift/double/significand.md)
- [exponent](swift/double/exponent-swift.property.md)
- [nextUp](swift/double/nextup.md)
- [nextDown](swift/double/nextdown.md)