Function esp_idf_svc::hal::sys::mbedtls_mpi_sub_int

source ยท 
pub unsafe extern "C" fn mbedtls_mpi_sub_int(
    X: *mut mbedtls_mpi,
    A: *const mbedtls_mpi,
    b: i32,
) -> i32
Expand description

\brief Perform a signed subtraction of an MPI and an integer: X = A - b

\param X The destination MPI. This must point to an initialized MPI. \param A The minuend. This must point to an initialized MPI. \param b The subtrahend.

\return \c 0 if successful. \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. \return Another negative error code on different kinds of failure.