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1 /* This Source Code Form is subject to the terms of the Mozilla Public |
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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4 |
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5 #ifndef MPI_AMD64 |
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6 #error This file only works on AMD64 platforms. |
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7 #endif |
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8 |
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9 #include <mpi-priv.h> |
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10 |
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11 /* |
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12 * MPI glue |
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13 * |
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14 */ |
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15 |
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16 /* Presently, this is only used by the Montgomery arithmetic code. */ |
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17 /* c += a * b */ |
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18 void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, |
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19 mp_digit b, mp_digit *c) |
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20 { |
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21 mp_digit w; |
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22 mp_digit d; |
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23 |
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24 d = s_mpv_mul_add_vec64(c, a, a_len, b); |
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25 c += a_len; |
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26 while (d) { |
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27 w = c[0] + d; |
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28 d = (w < c[0] || w < d); |
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29 *c++ = w; |
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30 } |
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31 } |
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32 |