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use core::ops::Mul;
pub use vec4::dot;
pub use vec4::dot_values;
pub use vec4::inv_len;
pub use vec4::inv_len_values;
pub use vec4::len;
pub use vec4::len_sq;
pub use vec4::len_values;
pub use vec4::len_values_sq;
use num_traits::real::Real;
#[inline]
pub fn w<'out, T>(out: &'out mut [T; 4], q: &[T; 4]) -> &'out mut [T; 4]
where
T: Real,
for<'a, 'b> &'a T: Mul<&'b T, Output = T>,
{
*out = *q;
w_mut(out)
}
#[inline]
pub fn w_mut<'out, T>(out: &'out mut [T; 4]) -> &'out mut [T; 4]
where
T: Real,
for<'a, 'b> &'a T: Mul<&'b T, Output = T>,
{
out[3] = (T::one() - &out[0] * &out[0] - &out[1] * &out[1] - &out[2] * &out[2])
.abs()
.sqrt();
out
}