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use super::*;

/// Four-dimensional vector: `x`, `y`, `z`, and `w`.
///
/// Internally, this is four 16-byte aligned `f32` values, or a SIMD equivalent.
#[derive(Debug, Clone, Copy)]
#[repr(align(16))]
pub struct Vec4 {
  #[cfg(target_feature = "sse")]
  raw: m128,
  #[cfg(not(target_feature = "sse"))]
  raw: [f32; 4],
}
unsafe impl Zeroable for Vec4 {}
unsafe impl Pod for Vec4 {}
impl Default for Vec4 {
  fn default() -> Self {
    Self::zeroed()
  }
}
impl From<[f32; 4]> for Vec4 {
  fn from(val: [f32; 4]) -> Self {
    Self { raw: cast(val) }
  }
}
impl Vec4 {
  /// Component-wise absolute value.
  pub fn abs(self) -> Self {
    if_sse! {{
      Self { raw: self.raw.abs() }
    } else {
      Self {
        raw:
          [
            lokacore::abs_f32(self.raw[0]),
            lokacore::abs_f32(self.raw[1]),
            lokacore::abs_f32(self.raw[2]),
            lokacore::abs_f32(self.raw[3]),
          ]
      }
    }}
  }
}