1*0957b409SSimon J. Gerraty /* 2*0957b409SSimon J. Gerraty * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3*0957b409SSimon J. Gerraty * 4*0957b409SSimon J. Gerraty * Permission is hereby granted, free of charge, to any person obtaining 5*0957b409SSimon J. Gerraty * a copy of this software and associated documentation files (the 6*0957b409SSimon J. Gerraty * "Software"), to deal in the Software without restriction, including 7*0957b409SSimon J. Gerraty * without limitation the rights to use, copy, modify, merge, publish, 8*0957b409SSimon J. Gerraty * distribute, sublicense, and/or sell copies of the Software, and to 9*0957b409SSimon J. Gerraty * permit persons to whom the Software is furnished to do so, subject to 10*0957b409SSimon J. Gerraty * the following conditions: 11*0957b409SSimon J. Gerraty * 12*0957b409SSimon J. Gerraty * The above copyright notice and this permission notice shall be 13*0957b409SSimon J. Gerraty * included in all copies or substantial portions of the Software. 14*0957b409SSimon J. Gerraty * 15*0957b409SSimon J. Gerraty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16*0957b409SSimon J. Gerraty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17*0957b409SSimon J. Gerraty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18*0957b409SSimon J. Gerraty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19*0957b409SSimon J. Gerraty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20*0957b409SSimon J. Gerraty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21*0957b409SSimon J. Gerraty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22*0957b409SSimon J. Gerraty * SOFTWARE. 23*0957b409SSimon J. Gerraty */ 24*0957b409SSimon J. Gerraty 25*0957b409SSimon J. Gerraty #include "inner.h" 26*0957b409SSimon J. Gerraty 27*0957b409SSimon J. Gerraty /* see inner.h */ 28*0957b409SSimon J. Gerraty void 29*0957b409SSimon J. Gerraty br_i32_mulacc(uint32_t *d, const uint32_t *a, const uint32_t *b) 30*0957b409SSimon J. Gerraty { 31*0957b409SSimon J. Gerraty size_t alen, blen, u; 32*0957b409SSimon J. Gerraty 33*0957b409SSimon J. Gerraty alen = (a[0] + 31) >> 5; 34*0957b409SSimon J. Gerraty blen = (b[0] + 31) >> 5; 35*0957b409SSimon J. Gerraty d[0] = a[0] + b[0]; 36*0957b409SSimon J. Gerraty for (u = 0; u < blen; u ++) { 37*0957b409SSimon J. Gerraty uint32_t f; 38*0957b409SSimon J. Gerraty size_t v; 39*0957b409SSimon J. Gerraty #if BR_64 40*0957b409SSimon J. Gerraty uint64_t cc; 41*0957b409SSimon J. Gerraty #else 42*0957b409SSimon J. Gerraty uint32_t cc; 43*0957b409SSimon J. Gerraty #endif 44*0957b409SSimon J. Gerraty 45*0957b409SSimon J. Gerraty f = b[1 + u]; 46*0957b409SSimon J. Gerraty cc = 0; 47*0957b409SSimon J. Gerraty for (v = 0; v < alen; v ++) { 48*0957b409SSimon J. Gerraty uint64_t z; 49*0957b409SSimon J. Gerraty 50*0957b409SSimon J. Gerraty z = (uint64_t)d[1 + u + v] + MUL(f, a[1 + v]) + cc; 51*0957b409SSimon J. Gerraty cc = z >> 32; 52*0957b409SSimon J. Gerraty d[1 + u + v] = (uint32_t)z; 53*0957b409SSimon J. Gerraty } 54*0957b409SSimon J. Gerraty d[1 + u + alen] = (uint32_t)cc; 55*0957b409SSimon J. Gerraty } 56*0957b409SSimon J. Gerraty } 57