pub unsafe extern "C" fn ca_mat_sub_ca(
y: *mut ca_mat_struct,
a: *const ca_mat_struct,
x: *const ca_struct,
ctx: *mut ca_ctx_struct,
)pub unsafe extern "C" fn ca_mat_sub_ca(
y: *mut ca_mat_struct,
a: *const ca_mat_struct,
x: *const ca_struct,
ctx: *mut ca_ctx_struct,
)