/* mpihelp-mul_3.c - MPI helper functions * Copyright (C) 1994, 1996, 1997, 1998, 2001 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * GnuPG is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * * Note: This code is heavily based on the GNU MP Library. * Actually it's the same code with only minor changes in the * way the data is stored; this is to support the abstraction * of an optional secure memory allocation which may be used * to avoid revealing of sensitive data due to paging etc. * The GNU MP Library itself is published under the LGPL; * however I decided to publish this code under the plain GPL. */ #include "mpi-internal.h" #include "longlong.h" mpi_limb_t mpihelp_submul_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size, mpi_limb_t s2_limb) { mpi_limb_t cy_limb; mpi_size_t j; mpi_limb_t prod_high, prod_low; mpi_limb_t x; /* The loop counter and index J goes from -SIZE to -1. This way * the loop becomes faster. */ j = -s1_size; res_ptr -= j; s1_ptr -= j; cy_limb = 0; do { umul_ppmm(prod_high, prod_low, s1_ptr[j], s2_limb); prod_low += cy_limb; cy_limb = (prod_low < cy_limb ? 1 : 0) + prod_high; x = res_ptr[j]; prod_low = x - prod_low; cy_limb += prod_low > x ? 1 : 0; res_ptr[j] = prod_low; } while (++j); return cy_limb; } ='/cgit.cgi/linux/net-next.git/commit/sound/soc/atmel/atmel-pcm-pdc.c?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/atmel/atmel-pcm-pdc.c?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/soc/atmel/atmel-pcm-pdc.c'> <input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='48656835c0405aa2e6c0d6a4305c77b70758d168'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/atmel?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>atmel</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/atmel/atmel-pcm-pdc.c?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>atmel-pcm-pdc.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/atmel/atmel-pcm-pdc.c?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>