I'm trying to convert a double being retrieved from an iPhone sensor into a float. Unfortunately, I can't seem to find any resources on built in functionality to do so.
If I initialize a Float or a cast to a Float from a double like so:
let roll = (Float)(attitude!.roll)
let pitch = (Float)(attitude!.pitch)
Or
let roll = Float(attitude!.roll)
let pitch = Float(attitude!.pitch)
the original Double values still don't get converted properly.
For instance, 9.436222
and 27.895268
become 0.486864
and 0.164693
respectively. Is there a proper way to cast to a Float from a Double that preserves the larger decimal value?
Using TypeCasting to Convert Double to Float in Java To define a float type, we must use the suffix f or F , whereas it is optional to use the suffix d or D for double. The default value of float is 0.0f , while the default value of double is 0.0d . By default, float numbers are treated as double in Java.
Swift enforces you to use Doubles instead of Floats. You should use Float only if you want to sacrifice precision to save memory. Also, if you are working with types that require Float, then you have to use a Float.
Swift version: 5.6. A CGFloat is a specialized form of Float that holds either 32-bits of data or 64-bits of data depending on the platform. The CG tells you it's part of Core Graphics, and it's found throughout UIKit, Core Graphics, Sprite Kit and many other iOS libraries.
The doubleValue() method of Java Float class returns a double value corresponding to this Float Object by widening the primitive values or in simple words by directly converting it to double via doubleValue() method .
guard let unwrappedAttitude = attitude else {
fatalError("attitude was nil!")
}
let roll = Float(unwrappedAttitude.roll)
let pitch = Float(unwrappedAttitude.pitch)
should be the way to go.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With