include/math-emu/op-1.h - android_kernel_htc_msm8960 - Gitiles

 /* Software floating-point emulation.
    Basic one-word fraction declaration and manipulation.
    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    __MATH_EMU_OP_1_H__
 #define    __MATH_EMU_OP_1_H__

 #define _FP_FRAC_DECL_1(X)	_FP_W_TYPE X##_f=0
 #define _FP_FRAC_COPY_1(D,S)	(D##_f = S##_f)
 #define _FP_FRAC_SET_1(X,I)	(X##_f = I)
 #define _FP_FRAC_HIGH_1(X)	(X##_f)
 #define _FP_FRAC_LOW_1(X)	(X##_f)
 #define _FP_FRAC_WORD_1(X,w)	(X##_f)

 #define _FP_FRAC_ADDI_1(X,I)	(X##_f += I)
 #define _FP_FRAC_SLL_1(X,N)			\
   do {						\
     if (__builtin_constant_p(N) && (N) == 1)	\
       X##_f += X##_f;				\
     else					\
       X##_f <<= (N);				\
   } while (0)
 #define _FP_FRAC_SRL_1(X,N)	(X##_f >>= N)

 /* Right shift with sticky-lsb.  */
 #define _FP_FRAC_SRS_1(X,N,sz)	__FP_FRAC_SRS_1(X##_f, N, sz)

 #define __FP_FRAC_SRS_1(X,N,sz)						\
    (X = (X >> (N) | (__builtin_constant_p(N) && (N) == 1		\
 		     ? X & 1 : (X << (_FP_W_TYPE_SIZE - (N))) != 0)))

 #define _FP_FRAC_ADD_1(R,X,Y)	(R##_f = X##_f + Y##_f)
 #define _FP_FRAC_SUB_1(R,X,Y)	(R##_f = X##_f - Y##_f)
 #define _FP_FRAC_DEC_1(X,Y)	(X##_f -= Y##_f)
 #define _FP_FRAC_CLZ_1(z, X)	__FP_CLZ(z, X##_f)

 /* Predicates */
 #define _FP_FRAC_NEGP_1(X)	((_FP_WS_TYPE)X##_f < 0)
 #define _FP_FRAC_ZEROP_1(X)	(X##_f == 0)
 #define _FP_FRAC_OVERP_1(fs,X)	(X##_f & _FP_OVERFLOW_##fs)
 #define _FP_FRAC_CLEAR_OVERP_1(fs,X)	(X##_f &= ~_FP_OVERFLOW_##fs)
 #define _FP_FRAC_EQ_1(X, Y)	(X##_f == Y##_f)
 #define _FP_FRAC_GE_1(X, Y)	(X##_f >= Y##_f)
 #define _FP_FRAC_GT_1(X, Y)	(X##_f > Y##_f)

 #define _FP_ZEROFRAC_1		0
 #define _FP_MINFRAC_1		1
 #define _FP_MAXFRAC_1		(~(_FP_WS_TYPE)0)

 /*
  * Unpack the raw bits of a native fp value.  Do not classify or
  * normalize the data.
  */

 #define _FP_UNPACK_RAW_1(fs, X, val)				\
   do {								\
     union _FP_UNION_##fs _flo; _flo.flt = (val);		\
 								\
     X##_f = _flo.bits.frac;					\
     X##_e = _flo.bits.exp;					\
     X##_s = _flo.bits.sign;					\
   } while (0)

 #define _FP_UNPACK_RAW_1_P(fs, X, val)				\
   do {								\
     union _FP_UNION_##fs *_flo =				\
       (union _FP_UNION_##fs *)(val);				\
 								\
     X##_f = _flo->bits.frac;					\
     X##_e = _flo->bits.exp;					\
     X##_s = _flo->bits.sign;					\
   } while (0)

 /*
  * Repack the raw bits of a native fp value.
  */

 #define _FP_PACK_RAW_1(fs, val, X)				\
   do {								\
     union _FP_UNION_##fs _flo;					\
 								\
     _flo.bits.frac = X##_f;					\
     _flo.bits.exp  = X##_e;					\
     _flo.bits.sign = X##_s;					\
 								\
     (val) = _flo.flt;						\
   } while (0)

 #define _FP_PACK_RAW_1_P(fs, val, X)				\
   do {								\
     union _FP_UNION_##fs *_flo =				\
       (union _FP_UNION_##fs *)(val);				\
 								\
     _flo->bits.frac = X##_f;					\
     _flo->bits.exp  = X##_e;					\
     _flo->bits.sign = X##_s;					\
   } while (0)


 /*
  * Multiplication algorithms:
  */

 /* Basic.  Assuming the host word size is >= 2*FRACBITS, we can do the
    multiplication immediately.  */

 #define _FP_MUL_MEAT_1_imm(wfracbits, R, X, Y)				\
   do {									\
     R##_f = X##_f * Y##_f;						\
     /* Normalize since we know where the msb of the multiplicands	\
        were (bit B), we know that the msb of the of the product is	\
        at either 2B or 2B-1.  */					\
     _FP_FRAC_SRS_1(R, wfracbits-1, 2*wfracbits);			\
   } while (0)

 /* Given a 1W * 1W => 2W primitive, do the extended multiplication.  */

 #define _FP_MUL_MEAT_1_wide(wfracbits, R, X, Y, doit)			\
   do {									\
     _FP_W_TYPE _Z_f0, _Z_f1;						\
     doit(_Z_f1, _Z_f0, X##_f, Y##_f);					\
     /* Normalize since we know where the msb of the multiplicands	\
        were (bit B), we know that the msb of the of the product is	\
        at either 2B or 2B-1.  */					\
     _FP_FRAC_SRS_2(_Z, wfracbits-1, 2*wfracbits);			\
     R##_f = _Z_f0;							\
   } while (0)

 /* Finally, a simple widening multiply algorithm.  What fun!  */

 #define _FP_MUL_MEAT_1_hard(wfracbits, R, X, Y)				\
   do {									\
     _FP_W_TYPE _xh, _xl, _yh, _yl, _z_f0, _z_f1, _a_f0, _a_f1;		\
 									\
     /* split the words in half */					\
     _xh = X##_f >> (_FP_W_TYPE_SIZE/2);					\
     _xl = X##_f & (((_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2)) - 1);		\
     _yh = Y##_f >> (_FP_W_TYPE_SIZE/2);					\
     _yl = Y##_f & (((_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2)) - 1);		\
 									\
     /* multiply the pieces */						\
     _z_f0 = _xl * _yl;							\
     _a_f0 = _xh * _yl;							\
     _a_f1 = _xl * _yh;							\
     _z_f1 = _xh * _yh;							\
 									\
     /* reassemble into two full words */				\
     if ((_a_f0 += _a_f1) < _a_f1)					\
       _z_f1 += (_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2);			\
     _a_f1 = _a_f0 >> (_FP_W_TYPE_SIZE/2);				\
     _a_f0 = _a_f0 << (_FP_W_TYPE_SIZE/2);				\
     _FP_FRAC_ADD_2(_z, _z, _a);						\
 									\
     /* normalize */							\
     _FP_FRAC_SRS_2(_z, wfracbits - 1, 2*wfracbits);			\
     R##_f = _z_f0;							\
   } while (0)


 /*
  * Division algorithms:
  */

 /* Basic.  Assuming the host word size is >= 2*FRACBITS, we can do the
    division immediately.  Give this macro either _FP_DIV_HELP_imm for
    C primitives or _FP_DIV_HELP_ldiv for the ISO function.  Which you
    choose will depend on what the compiler does with divrem4.  */

 #define _FP_DIV_MEAT_1_imm(fs, R, X, Y, doit)		\
   do {							\
     _FP_W_TYPE _q, _r;					\
     X##_f <<= (X##_f < Y##_f				\
 	       ? R##_e--, _FP_WFRACBITS_##fs		\
 	       : _FP_WFRACBITS_##fs - 1);		\
     doit(_q, _r, X##_f, Y##_f);				\
     R##_f = _q | (_r != 0);				\
   } while (0)

 /* GCC's longlong.h defines a 2W / 1W => (1W,1W) primitive udiv_qrnnd
    that may be useful in this situation.  This first is for a primitive
    that requires normalization, the second for one that does not.  Look
    for UDIV_NEEDS_NORMALIZATION to tell which your machine needs.  */

 #define _FP_DIV_MEAT_1_udiv_norm(fs, R, X, Y)				\
   do {									\
     _FP_W_TYPE _nh, _nl, _q, _r, _y;					\
 									\
     /* Normalize Y -- i.e. make the most significant bit set.  */	\
     _y = Y##_f << _FP_WFRACXBITS_##fs;					\
 									\
     /* Shift X op correspondingly high, that is, up one full word.  */	\
     if (X##_f < Y##_f)							\
       {									\
 	R##_e--;							\
 	_nl = 0;							\
 	_nh = X##_f;							\
       }									\
     else								\
       {									\
 	_nl = X##_f << (_FP_W_TYPE_SIZE - 1);				\
 	_nh = X##_f >> 1;						\
       }									\
     									\
     udiv_qrnnd(_q, _r, _nh, _nl, _y);					\
     R##_f = _q | (_r != 0);						\
   } while (0)

 #define _FP_DIV_MEAT_1_udiv(fs, R, X, Y)		\
   do {							\
     _FP_W_TYPE _nh, _nl, _q, _r;			\
     if (X##_f < Y##_f)					\
       {							\
 	R##_e--;					\
 	_nl = X##_f << _FP_WFRACBITS_##fs;		\
 	_nh = X##_f >> _FP_WFRACXBITS_##fs;		\
       }							\
     else						\
       {							\
 	_nl = X##_f << (_FP_WFRACBITS_##fs - 1);	\
 	_nh = X##_f >> (_FP_WFRACXBITS_##fs + 1);	\
       }							\
     udiv_qrnnd(_q, _r, _nh, _nl, Y##_f);		\
     R##_f = _q | (_r != 0);				\
   } while (0)


 /*
  * Square root algorithms:
  * We have just one right now, maybe Newton approximation
  * should be added for those machines where division is fast.
  */

 #define _FP_SQRT_MEAT_1(R, S, T, X, q)			\
   do {							\
     while (q != _FP_WORK_ROUND)				\
       {							\
         T##_f = S##_f + q;				\
         if (T##_f <= X##_f)				\
           {						\
             S##_f = T##_f + q;				\
             X##_f -= T##_f;				\
             R##_f += q;					\
           }						\
         _FP_FRAC_SLL_1(X, 1);				\
         q >>= 1;					\
       }							\
     if (X##_f)						\
       {							\
 	if (S##_f < X##_f)				\
 	  R##_f |= _FP_WORK_ROUND;			\
 	R##_f |= _FP_WORK_STICKY;			\
       }							\
   } while (0)

 /*
  * Assembly/disassembly for converting to/from integral types.
  * No shifting or overflow handled here.
  */

 #define _FP_FRAC_ASSEMBLE_1(r, X, rsize)	(r = X##_f)
 #define _FP_FRAC_DISASSEMBLE_1(X, r, rsize)	(X##_f = r)


 /*
  * Convert FP values between word sizes
  */

 #define _FP_FRAC_CONV_1_1(dfs, sfs, D, S)				\
   do {									\
     D##_f = S##_f;							\
     if (_FP_WFRACBITS_##sfs > _FP_WFRACBITS_##dfs)			\
       {									\
 	if (S##_c != FP_CLS_NAN)					\
 	  _FP_FRAC_SRS_1(D, (_FP_WFRACBITS_##sfs-_FP_WFRACBITS_##dfs),	\
 			 _FP_WFRACBITS_##sfs);				\
 	else								\
 	  _FP_FRAC_SRL_1(D, (_FP_WFRACBITS_##sfs-_FP_WFRACBITS_##dfs));	\
       }									\
     else								\
       D##_f <<= _FP_WFRACBITS_##dfs - _FP_WFRACBITS_##sfs;		\
   } while (0)

 #endif /* __MATH_EMU_OP_1_H__ */
	/* Software floating-point emulation.
	Basic one-word fraction declaration and manipulation.
	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 __MATH_EMU_OP_1_H__
	#define __MATH_EMU_OP_1_H__

	#define _FP_FRAC_DECL_1(X) _FP_W_TYPE X##_f=0
	#define _FP_FRAC_COPY_1(D,S) (D##_f = S##_f)
	#define _FP_FRAC_SET_1(X,I) (X##_f = I)
	#define _FP_FRAC_HIGH_1(X) (X##_f)
	#define _FP_FRAC_LOW_1(X) (X##_f)
	#define _FP_FRAC_WORD_1(X,w) (X##_f)

	#define _FP_FRAC_ADDI_1(X,I) (X##_f += I)
	#define _FP_FRAC_SLL_1(X,N) \
	do { \
	if (__builtin_constant_p(N) && (N) == 1) \
	X##_f += X##_f; \
	else \
	X##_f <<= (N); \
	} while (0)
	#define _FP_FRAC_SRL_1(X,N) (X##_f >>= N)

	/* Right shift with sticky-lsb. */
	#define _FP_FRAC_SRS_1(X,N,sz) __FP_FRAC_SRS_1(X##_f, N, sz)

	#define __FP_FRAC_SRS_1(X,N,sz) \
	(X = (X >> (N) \| (__builtin_constant_p(N) && (N) == 1 \
	? X & 1 : (X << (_FP_W_TYPE_SIZE - (N))) != 0)))

	#define _FP_FRAC_ADD_1(R,X,Y) (R##_f = X##_f + Y##_f)
	#define _FP_FRAC_SUB_1(R,X,Y) (R##_f = X##_f - Y##_f)
	#define _FP_FRAC_DEC_1(X,Y) (X##_f -= Y##_f)
	#define _FP_FRAC_CLZ_1(z, X) __FP_CLZ(z, X##_f)

	/* Predicates */
	#define _FP_FRAC_NEGP_1(X) ((_FP_WS_TYPE)X##_f < 0)
	#define _FP_FRAC_ZEROP_1(X) (X##_f == 0)
	#define _FP_FRAC_OVERP_1(fs,X) (X##_f & _FP_OVERFLOW_##fs)
	#define _FP_FRAC_CLEAR_OVERP_1(fs,X) (X##_f &= ~_FP_OVERFLOW_##fs)
	#define _FP_FRAC_EQ_1(X, Y) (X##_f == Y##_f)
	#define _FP_FRAC_GE_1(X, Y) (X##_f >= Y##_f)
	#define _FP_FRAC_GT_1(X, Y) (X##_f > Y##_f)

	#define _FP_ZEROFRAC_1 0
	#define _FP_MINFRAC_1 1
	#define _FP_MAXFRAC_1 (~(_FP_WS_TYPE)0)

	/*
	* Unpack the raw bits of a native fp value. Do not classify or
	* normalize the data.
	*/

	#define _FP_UNPACK_RAW_1(fs, X, val) \
	do { \
	union _FP_UNION_##fs _flo; _flo.flt = (val); \
	\
	X##_f = _flo.bits.frac; \
	X##_e = _flo.bits.exp; \
	X##_s = _flo.bits.sign; \
	} while (0)

	#define _FP_UNPACK_RAW_1_P(fs, X, val) \
	do { \
	union _FP_UNION_##fs *_flo = \
	(union _FP_UNION_##fs *)(val); \
	\
	X##_f = _flo->bits.frac; \
	X##_e = _flo->bits.exp; \
	X##_s = _flo->bits.sign; \
	} while (0)

	/*
	* Repack the raw bits of a native fp value.
	*/

	#define _FP_PACK_RAW_1(fs, val, X) \
	do { \
	union _FP_UNION_##fs _flo; \
	\
	_flo.bits.frac = X##_f; \
	_flo.bits.exp = X##_e; \
	_flo.bits.sign = X##_s; \
	\
	(val) = _flo.flt; \
	} while (0)

	#define _FP_PACK_RAW_1_P(fs, val, X) \
	do { \
	union _FP_UNION_##fs *_flo = \
	(union _FP_UNION_##fs *)(val); \
	\
	_flo->bits.frac = X##_f; \
	_flo->bits.exp = X##_e; \
	_flo->bits.sign = X##_s; \
	} while (0)


	/*
	* Multiplication algorithms:
	*/

	/* Basic. Assuming the host word size is >= 2*FRACBITS, we can do the
	multiplication immediately. */

	#define _FP_MUL_MEAT_1_imm(wfracbits, R, X, Y) \
	do { \
	R##_f = X##_f * Y##_f; \
	/* Normalize since we know where the msb of the multiplicands \
	were (bit B), we know that the msb of the of the product is \
	at either 2B or 2B-1. */ \
	_FP_FRAC_SRS_1(R, wfracbits-1, 2*wfracbits); \
	} while (0)

	/* Given a 1W * 1W => 2W primitive, do the extended multiplication. */

	#define _FP_MUL_MEAT_1_wide(wfracbits, R, X, Y, doit) \
	do { \
	_FP_W_TYPE _Z_f0, _Z_f1; \
	doit(_Z_f1, _Z_f0, X##_f, Y##_f); \
	/* Normalize since we know where the msb of the multiplicands \
	were (bit B), we know that the msb of the of the product is \
	at either 2B or 2B-1. */ \
	_FP_FRAC_SRS_2(_Z, wfracbits-1, 2*wfracbits); \
	R##_f = _Z_f0; \
	} while (0)

	/* Finally, a simple widening multiply algorithm. What fun! */

	#define _FP_MUL_MEAT_1_hard(wfracbits, R, X, Y) \
	do { \
	_FP_W_TYPE _xh, _xl, _yh, _yl, _z_f0, _z_f1, _a_f0, _a_f1; \
	\
	/* split the words in half */ \
	_xh = X##_f >> (_FP_W_TYPE_SIZE/2); \
	_xl = X##_f & (((_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2)) - 1); \
	_yh = Y##_f >> (_FP_W_TYPE_SIZE/2); \
	_yl = Y##_f & (((_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2)) - 1); \
	\
	/* multiply the pieces */ \
	_z_f0 = _xl * _yl; \
	_a_f0 = _xh * _yl; \
	_a_f1 = _xl * _yh; \
	_z_f1 = _xh * _yh; \
	\
	/* reassemble into two full words */ \
	if ((_a_f0 += _a_f1) < _a_f1) \
	_z_f1 += (_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2); \
	_a_f1 = _a_f0 >> (_FP_W_TYPE_SIZE/2); \
	_a_f0 = _a_f0 << (_FP_W_TYPE_SIZE/2); \
	_FP_FRAC_ADD_2(_z, _z, _a); \
	\
	/* normalize */ \
	_FP_FRAC_SRS_2(_z, wfracbits - 1, 2*wfracbits); \
	R##_f = _z_f0; \
	} while (0)


	/*
	* Division algorithms:
	*/

	/* Basic. Assuming the host word size is >= 2*FRACBITS, we can do the
	division immediately. Give this macro either _FP_DIV_HELP_imm for
	C primitives or _FP_DIV_HELP_ldiv for the ISO function. Which you
	choose will depend on what the compiler does with divrem4. */

	#define _FP_DIV_MEAT_1_imm(fs, R, X, Y, doit) \
	do { \
	_FP_W_TYPE _q, _r; \
	X##_f <<= (X##_f < Y##_f \
	? R##_e--, _FP_WFRACBITS_##fs \
	: _FP_WFRACBITS_##fs - 1); \
	doit(_q, _r, X##_f, Y##_f); \
	R##_f = _q \| (_r != 0); \
	} while (0)

	/* GCC's longlong.h defines a 2W / 1W => (1W,1W) primitive udiv_qrnnd
	that may be useful in this situation. This first is for a primitive
	that requires normalization, the second for one that does not. Look
	for UDIV_NEEDS_NORMALIZATION to tell which your machine needs. */

	#define _FP_DIV_MEAT_1_udiv_norm(fs, R, X, Y) \
	do { \
	_FP_W_TYPE _nh, _nl, _q, _r, _y; \
	\
	/* Normalize Y -- i.e. make the most significant bit set. */ \
	_y = Y##_f << _FP_WFRACXBITS_##fs; \
	\
	/* Shift X op correspondingly high, that is, up one full word. */ \
	if (X##_f < Y##_f) \
	{ \
	R##_e--; \
	_nl = 0; \
	_nh = X##_f; \
	} \
	else \
	{ \
	_nl = X##_f << (_FP_W_TYPE_SIZE - 1); \
	_nh = X##_f >> 1; \
	} \
	\
	udiv_qrnnd(_q, _r, _nh, _nl, _y); \
	R##_f = _q \| (_r != 0); \
	} while (0)

	#define _FP_DIV_MEAT_1_udiv(fs, R, X, Y) \
	do { \
	_FP_W_TYPE _nh, _nl, _q, _r; \
	if (X##_f < Y##_f) \
	{ \
	R##_e--; \
	_nl = X##_f << _FP_WFRACBITS_##fs; \
	_nh = X##_f >> _FP_WFRACXBITS_##fs; \
	} \
	else \
	{ \
	_nl = X##_f << (_FP_WFRACBITS_##fs - 1); \
	_nh = X##_f >> (_FP_WFRACXBITS_##fs + 1); \
	} \
	udiv_qrnnd(_q, _r, _nh, _nl, Y##_f); \
	R##_f = _q \| (_r != 0); \
	} while (0)


	/*
	* Square root algorithms:
	* We have just one right now, maybe Newton approximation
	* should be added for those machines where division is fast.
	*/

	#define _FP_SQRT_MEAT_1(R, S, T, X, q) \
	do { \
	while (q != _FP_WORK_ROUND) \
	{ \
	T##_f = S##_f + q; \
	if (T##_f <= X##_f) \
	{ \
	S##_f = T##_f + q; \
	X##_f -= T##_f; \
	R##_f += q; \
	} \
	_FP_FRAC_SLL_1(X, 1); \
	q >>= 1; \
	} \
	if (X##_f) \
	{ \
	if (S##_f < X##_f) \
	R##_f \|= _FP_WORK_ROUND; \
	R##_f \|= _FP_WORK_STICKY; \
	} \
	} while (0)

	/*
	* Assembly/disassembly for converting to/from integral types.
	* No shifting or overflow handled here.
	*/

	#define _FP_FRAC_ASSEMBLE_1(r, X, rsize) (r = X##_f)
	#define _FP_FRAC_DISASSEMBLE_1(X, r, rsize) (X##_f = r)


	/*
	* Convert FP values between word sizes
	*/

	#define _FP_FRAC_CONV_1_1(dfs, sfs, D, S) \
	do { \
	D##_f = S##_f; \
	if (_FP_WFRACBITS_##sfs > _FP_WFRACBITS_##dfs) \
	{ \
	if (S##_c != FP_CLS_NAN) \
	_FP_FRAC_SRS_1(D, (_FP_WFRACBITS_##sfs-_FP_WFRACBITS_##dfs), \
	_FP_WFRACBITS_##sfs); \
	else \
	_FP_FRAC_SRL_1(D, (_FP_WFRACBITS_##sfs-_FP_WFRACBITS_##dfs)); \
	} \
	else \
	D##_f <<= _FP_WFRACBITS_##dfs - _FP_WFRACBITS_##sfs; \
	} while (0)

	#endif /* __MATH_EMU_OP_1_H__ */