const helpers

fixed_wide/src/fixed.rs

@@ -40,6 +40,22 @@ impl<const N:usize,const F:usize> Fixed<N,F>{
 		digits[N-1]|=(value&i64::MIN) as u64;
 		Self::from_bits(BInt::from_bits(bnum::BUint::from_digits(digits)))
 	}
+	#[inline]
+	pub const fn is_zero(self)->bool{
+		self.bits.is_zero()
+	}
+	#[inline]
+	pub const fn is_negative(self)->bool{
+		self.bits.is_negative()
+	}
+	#[inline]
+	pub const fn is_positive(self)->bool{
+		self.bits.is_positive()
+	}
+	#[inline]
+	pub const fn abs(self)->Self{
+		Self::from_bits(self.bits.abs())
+	}
 }
 impl<const F:usize> Fixed<1,F>{
 	/// My old code called this function everywhere so let's provide it