The Tor Browser: security/nss/lib/freebl/mpi/mpi

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef MPI_AMD64

     6 #error This file only works on AMD64 platforms.

     7 #endif

     9 #include <mpi-priv.h>

    11 /*

    12  * MPI glue

    13  *

    14  */

    16 /* Presently, this is only used by the Montgomery arithmetic code. */

    17 /* c += a * b */

    18 void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len,

    19                                        mp_digit b, mp_digit *c)

    20 {

    21   mp_digit w;

    22   mp_digit d;

    24   d = s_mpv_mul_add_vec64(c, a, a_len, b);

    25   c += a_len;

    26   while (d) {

    27     w = c[0] + d;

    28     d = (w < c[0] || w < d);

    29     *c++ = w;

    30   }

    31 }

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