Function tfe_svd_rrule_f64 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn tfe_svd_rrule_f64(
    _tensor: *const TfeTensorF64,
    _left: *const usize,
    _left_len: usize,
    _right: *const usize,
    _right_len: usize,
    _max_rank: usize,
    _cutoff: f64,
    _cotangent_u: *const TfeTensorF64,
    _cotangent_s: *const TfeTensorF64,
    _cotangent_vt: *const TfeTensorF64,
    _status: *mut tfe_status_t,
) -> *mut TfeTensorF64

Reverse-mode rule (VJP) for SVD.

Computes the gradient of the input tensor given cotangents for U, S, and Vt. Any cotangent may be null (zero cotangent).

Safety

• tensor must be a valid, non-null tensor pointer.
• left must point to left_len valid usize values.
• right must point to right_len valid usize values.
• cotangent_u, cotangent_s, cotangent_vt may each be null.
• status must be a valid, non-null pointer.

Examples (C)

size_t left[] = {0};
size_t right[] = {1};
tfe_status_t status;
// Only need gradient through singular values
tfe_tensor_f64 *grad = tfe_svd_rrule_f64(
    a, left, 1, right, 1, 0, -1.0,
    NULL,    // no cotangent for U
    cot_s,   // cotangent for S
    NULL,    // no cotangent for Vt
    &status);
tfe_tensor_f64_release(grad);