/* Machine-dependent software floating-point definitions.   Sparc64 userland (_Q_* and _Qp_*) version.   Copyright (C) 1997, 1998, 1999, 2006 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) and		  David S. Miller (davem@redhat.com).   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public   License as published by the Free Software Foundation; either   version 2.1 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   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */   #include <fpu_control.h>#include <fenv.h>#include <stdlib.h>#define _FP_W_TYPE_SIZE		64#define _FP_W_TYPE		unsigned long#define _FP_WS_TYPE		signed long#define _FP_I_TYPE		long/* Helper macros for _FP_MUL_MEAT_2_120_240_double.  */#define _FP_MUL_MEAT_SET_FE_TZ		   			\do {								\  static fpu_control_t _fetz = _FPU_RC_DOWN;			\  _FPU_SETCW(_fetz);						\} while (0)#ifndef _FP_MUL_MEAT_RESET_FE#define _FP_MUL_MEAT_RESET_FE _FPU_SETCW(_fcw)#endif      #define _FP_MUL_MEAT_S(R,X,Y)					\  _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y)#define _FP_MUL_MEAT_D(R,X,Y)					\  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)#define _FP_MUL_MEAT_Q(R,X,Y)					\  _FP_MUL_MEAT_2_120_240_double(_FP_WFRACBITS_Q,R,X,Y,		\				_FP_MUL_MEAT_SET_FE_TZ,		\				_FP_MUL_MEAT_RESET_FE)#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_2_udiv(Q,R,X,Y)#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1)#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 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 Y. */#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\  do {								\    if ((_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)		\	&& !(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs))	\      {								\	R##_s = X##_s;						\	_FP_FRAC_COPY_##wc(R,X);				\      }								\    else							\      {								\	R##_s = Y##_s;						\	_FP_FRAC_COPY_##wc(R,Y);				\      }								\    R##_c = FP_CLS_NAN;						\  } while (0)/* Obtain the current rounding mode. */#ifndef FP_ROUNDMODE#define FP_ROUNDMODE	((_fcw >> 30) & 0x3)#endif/* Exception flags. */#define FP_EX_INVALID		(1 << 4)#define FP_EX_OVERFLOW		(1 << 3)#define FP_EX_UNDERFLOW		(1 << 2)#define FP_EX_DIVZERO		(1 << 1)#define FP_EX_INEXACT		(1 << 0)#define _FP_DECL_EX	fpu_control_t _fcw#define FP_INIT_ROUNDMODE					\do {								\  _FPU_GETCW(_fcw);						\} while (0)#define FP_INHIBIT_RESULTS ((_fcw >> 23) & _fex)/* Simulate exceptions using double arithmetics. */extern double __Qp_handle_exceptions(int exc);#define FP_HANDLE_EXCEPTIONS					\do {								\  if (!_fex)							\    {								\      /* This is the common case, so we do it inline.		\       * We need to clear cexc bits if any.			\       */							\      __asm__ __volatile__("\n"					\"      	fzero %%f62\n"						\"      	faddd %%f62, %%f62, %%f62\n"				\"      	" : : : "f62");						\    }								\  else								\    {								\      __Qp_handle_exceptions (_fex);				\    }								\} while (0)#define QP_HANDLE_EXCEPTIONS(_a)				\do {								\  if ((_fcw >> 23) & _fex)					\    {								\      _a;							\    }								\  else								\    {								\      _fcw = (_fcw & ~0x1fL) | (_fex << 5) | _fex;		\      _FPU_SETCW(_fcw);						\    }								\} while (0)#define QP_NO_EXCEPTIONS					\  __asm ("fzero %%f62\n"					\"	  faddd %%f62, %%f62, %%f62" : : : "f62")                              #define QP_CLOBBER "memory", "f52", "f54", "f56", "f58", "f60", "f62"#define QP_CLOBBER_CC QP_CLOBBER , "cc"