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zmodmul.c - libzahl - big integer library |
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git clone git://git.suckless.org/libzahl |
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zmodmul.c (365B) |
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1 /* See LICENSE file for copyright and license details. */ |
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2 #include "internals.h" |
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3 |
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4 |
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5 void |
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6 zmodmul(z_t a, z_t b, z_t c, z_t d) |
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7 { |
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8 /* TODO Montgomery modular multiplication */ |
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9 /* TODO Kochanski multiplication */ |
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10 if (unlikely(a == d)) { |
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11 zset(libzahl_tmp_modmul, d); |
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12 zmul(a, b, c); |
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13 zmod(a, a, libzahl_tmp_modmul); |
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14 } else { |
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15 zmul(a, b, c); |
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16 zmod(a, a, d); |
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17 } |
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18 } |
