Function cusolverDnXsygvd_bufferSize 

pub unsafe extern "C" fn cusolverDnXsygvd_bufferSize(
    handle: cusolverDnHandle_t,
    params: cusolverDnParams_t,
    itype: cusolverEigType_t,
    jobz: cusolverEigMode_t,
    uplo: cublasFillMode_t,
    n: i64,
    dataTypeA: cudaDataType,
    d_A: *const c_void,
    lda: i64,
    dataTypeB: cudaDataType,
    d_B: *const c_void,
    ldb: i64,
    dataTypeW: cudaDataType,
    d_W: *const c_void,
    computeType: cudaDataType,
    workspaceInBytesOnDevice: *mut size_t,
    workspaceInBytesOnHost: *mut size_t,
) -> cusolverStatus_t