Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* mpi-cmp.c  -  MPI functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Copyright (C) 1998, 1999 Free Software Foundation, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * This file is part of GnuPG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * GnuPG is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * the Free Software Foundation; either version 2 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * GnuPG is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "mpi-internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int mpi_cmp_ui(MPI u, unsigned long v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	mpi_limb_t limb = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	mpi_normalize(u);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (!u->nlimbs && !limb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	if (u->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	if (u->nlimbs > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	if (u->d[0] == limb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	else if (u->d[0] > limb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) EXPORT_SYMBOL_GPL(mpi_cmp_ui);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static int do_mpi_cmp(MPI u, MPI v, int absmode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	mpi_size_t usize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	mpi_size_t vsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	int usign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	int vsign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	int cmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	mpi_normalize(u);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	mpi_normalize(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	usize = u->nlimbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	vsize = v->nlimbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	usign = absmode ? 0 : u->sign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	vsign = absmode ? 0 : v->sign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	/* Compare sign bits.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	if (!usign && vsign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	if (usign && !vsign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	/* U and V are either both positive or both negative.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	if (usize != vsize && !usign && !vsign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		return usize - vsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	if (usize != vsize && usign && vsign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		return vsize + usize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	if (!usize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	cmp = mpihelp_cmp(u->d, v->d, usize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	if (!cmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	if ((cmp < 0?1:0) == (usign?1:0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int mpi_cmp(MPI u, MPI v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 	return do_mpi_cmp(u, v, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) EXPORT_SYMBOL_GPL(mpi_cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int mpi_cmpabs(MPI u, MPI v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 	return do_mpi_cmp(u, v, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) EXPORT_SYMBOL_GPL(mpi_cmpabs);