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i15_add.c
(1.45 KB)
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i15_bitlen.c
(1.42 KB)
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i15_decmod.c
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i15_decode.c
(1.59 KB)
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i15_decred.c
(2.52 KB)
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i15_encode.c
(1.6 KB)
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i15_fmont.c
(1.86 KB)
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i15_iszero.c
(1.32 KB)
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i15_moddiv.c
(12.25 KB)
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i15_modpow.c
(1.68 KB)
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i15_modpow2.c
(4.06 KB)
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i15_montmul.c
(7.28 KB)
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i15_mulacc.c
(1.85 KB)
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i15_muladd.c
(4.57 KB)
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i15_ninv15.c
(1.35 KB)
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i15_reduce.c
(1.98 KB)
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i15_rshift.c
(1.44 KB)
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i15_sub.c
(1.45 KB)
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i15_tmont.c
(1.3 KB)
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i31_add.c
(1.47 KB)
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i31_bitlen.c
(1.42 KB)
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i31_decmod.c
(3.46 KB)
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i31_decode.c
(1.63 KB)
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i31_decred.c
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i31_encode.c
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i31_fmont.c
(1.88 KB)
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i31_iszero.c
(1.32 KB)
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i31_moddiv.c
(12.91 KB)
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i31_modpow.c
(2.11 KB)
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i31_modpow2.c
(4.06 KB)
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i31_montmul.c
(3.75 KB)
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i31_mulacc.c
(2.24 KB)
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i31_muladd.c
(4.51 KB)
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i31_ninv31.c
(1.33 KB)
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i31_reduce.c
(1.98 KB)
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i31_rshift.c
(1.45 KB)
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i31_sub.c
(1.46 KB)
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i31_tmont.c
(1.3 KB)
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i32_add.c
(1.57 KB)
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i32_bitlen.c
(1.42 KB)
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i32_decmod.c
(2.2 KB)
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i32_decode.c
(1.68 KB)
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i32_decred.c
(2.67 KB)
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i32_div32.c
(1.66 KB)
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i32_encode.c
(1.88 KB)
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i32_fmont.c
(1.86 KB)
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i32_iszero.c
(1.32 KB)
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i32_modpow.c
(2.11 KB)
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i32_montmul.c
(1.98 KB)
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i32_mulacc.c
(1.65 KB)
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i32_muladd.c
(4.06 KB)
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i32_ninv32.c
(1.31 KB)
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i32_reduce.c
(1.98 KB)
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i32_sub.c
(1.57 KB)
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i32_tmont.c
(1.3 KB)
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i62_modpow2.c
(12.71 KB)
Editing: i15_sub.c
/* * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org> * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "inner.h" /* see inner.h */ uint32_t br_i15_sub(uint16_t *a, const uint16_t *b, uint32_t ctl) { uint32_t cc; size_t u, m; cc = 0; m = (a[0] + 31) >> 4; for (u = 1; u < m; u ++) { uint32_t aw, bw, naw; aw = a[u]; bw = b[u]; naw = aw - bw - cc; cc = naw >> 31; a[u] = MUX(ctl, naw & 0x7FFF, aw); } return cc; }
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