pub fn axpy(
n: i32,
alpha: f64,
x: &[f64],
incx: i32,
y: &mut [f64],
incy: i32,
null_mask: Option<&Bitmask>,
null_count: Option<usize>,
) -> Result<(), KernelError>Expand description
Scaled vector addition: y ← α·x + y
Computes a linear combination of two vectors, scaling x by alpha and accumulating into y.
Equivalent to y[i] ← alpha * x[i] + y[i] for all valid i.