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use labrador_ldpc::decoder::DecodeFrom;
// Less than zero = 1 bit
// Greater than zero = 0 bit
pub trait SoftBit {
fn from_hard_bit(bit: bool) -> Self;
fn hard_bit(&self) -> bool;
}
impl<T: DecodeFrom> SoftBit for T {
fn from_hard_bit(bit: bool) -> Self {
if bit {
-Self::one()
} else {
Self::one()
}
}
fn hard_bit(&self) -> bool {
self < &T::zero()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn e2e() {
assert!(f32::from_hard_bit(true).hard_bit());
assert!(!f32::from_hard_bit(false).hard_bit());
assert!(f64::from_hard_bit(true).hard_bit());
assert!(!f64::from_hard_bit(false).hard_bit());
assert!(i8::from_hard_bit(true).hard_bit());
assert!(!i8::from_hard_bit(false).hard_bit());
assert!(i16::from_hard_bit(true).hard_bit());
assert!(!i16::from_hard_bit(false).hard_bit());
assert!(i32::from_hard_bit(true).hard_bit());
assert!(!i32::from_hard_bit(false).hard_bit());
}
}