Function bdk_chain::bitcoin::secp256k1::ffi::secp256k1_ellswift_xdh
pub unsafe extern "C" fn secp256k1_ellswift_xdh(
ctx: *const Context,
output: *mut u8,
ell_a64: *const u8,
ell_b64: *const u8,
seckey32: *const u8,
party: i32,
hashfp: Option<unsafe extern "C" fn(_: *mut u8, _: *const u8, _: *const u8, _: *const u8, _: *mut c_void) -> i32>,
data: *mut c_void
) -> i32