/* Machine-dependent software floating-point definitions.   S/390 kernel version.   Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Richard Henderson (rth@cygnus.com),		  Jakub Jelinek (jj@ultra.linux.cz),		  David S. Miller (davem@redhat.com) and		  Peter Maydell (pmaydell@chiark.greenend.org.uk).   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Library General Public License as   published by the Free Software Foundation; either version 2 of the   License, or (at your option) any later version.   The GNU C Library 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   Library General Public License for more details.   You should have received a copy of the GNU Library General Public   License along with the GNU C Library; see the file COPYING.LIB.  If   not, write to the Free Software Foundation, Inc.,   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */#ifndef _SFP_MACHINE_H#define _SFP_MACHINE_H   #include <linux/config.h>#define _FP_W_TYPE_SIZE		32#define _FP_W_TYPE		unsigned long#define _FP_WS_TYPE		signed long#define _FP_I_TYPE		long#define _FP_MUL_MEAT_S(R,X,Y)					\  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)#define _FP_MUL_MEAT_D(R,X,Y)					\  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)#define _FP_MUL_MEAT_Q(R,X,Y)					\  _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_udiv(S,R,X,Y)#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_2_udiv(D,R,X,Y)#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_4_udiv(Q,R,X,Y)#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1#define _FP_NANSIGN_S		0#define _FP_NANSIGN_D		0#define _FP_NANSIGN_Q		0#define _FP_KEEPNANFRACP 1/* * If one NaN is signaling and the other is not, * we choose that one, otherwise we choose X. */#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \  do {                                                          \    if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \        && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \      {                                                         \        R##_s = Y##_s;                                          \        _FP_FRAC_COPY_##wc(R,Y);                                \      }                                                         \    else                                                        \      {                                                         \        R##_s = X##_s;                                          \        _FP_FRAC_COPY_##wc(R,X);                                \      }                                                         \    R##_c = FP_CLS_NAN;                                         \  } while (0)/* Some assembly to speed things up. */#define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({		\	unsigned int __r2 = (x2) + (y2);			\	unsigned int __r1 = (x1);				\	unsigned int __r0 = (x0);				\	__asm__ ("   alr %2,%3\n"				\		 "   brc 12,0f\n"				\		 "   lhi 0,1\n"					\		 "   alr %1,0\n"				\		 "   brc 12,0f\n"				\		 "   alr %0,0\n"				\		 "0:"						\		 : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0)	\		 : "d" (y0), "i" (1) : "cc", "0" );		\	__asm__ ("   alr %1,%2\n"				\		 "   brc 12,0f\n"				\		 "   ahi %0,1\n"				\		 "0:"						\		 : "+&d" (__r2), "+&d" (__r1)			\		 : "d" (y1) : "cc" );				\	(r2) = __r2;						\	(r1) = __r1;						\	(r0) = __r0;						\})#define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({		\	unsigned int __r2 = (x2) - (y2);			\	unsigned int __r1 = (x1);				\	unsigned int __r0 = (x0);				\	__asm__ ("   slr %2,%3\n"				\		 "   brc 3,0f\n"				\		 "   lhi 0,1\n"					\		 "   slr %1,0\n"				\		 "   brc 3,0f\n"				\		 "   slr %0,0\n"				\		 "0:"						\		 : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0)	\		 : "d" (y0) : "cc", "0" );			\	__asm__ ("   slr %1,%2\n"				\		 "   brc 3,0f\n"				\		 "   ahi %0,-1\n"				\		 "0:"						\		 : "+&d" (__r2), "+&d" (__r1)			\		 : "d" (y1) : "cc" );				\	(r2) = __r2;						\	(r1) = __r1;						\	(r0) = __r0;						\})#define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0)/* Obtain the current rounding mode. */#define FP_ROUNDMODE	mode/* Exception flags. */#define FP_EX_INVALID		0x800000#define FP_EX_DIVZERO		0x400000#define FP_EX_OVERFLOW		0x200000#define FP_EX_UNDERFLOW		0x100000#define FP_EX_INEXACT		0x080000/* We write the results always */#define FP_INHIBIT_RESULTS 0#endif