arch/parisc/math-emu/sgl_float.h - linux - Git at Google

 /*
  * Linux/PA-RISC Project (http://www.parisc-linux.org/)
  *
  * Floating-point emulation code
  *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
  *
  *    This program 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, or (at your option)
  *    any later version.
  *
  *    This program 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
  */

 #ifdef __NO_PA_HDRS
     PA header file -- do not include this header file for non-PA builds.
 #endif

 /* 32-bit word grabing functions */
 #define Sgl_firstword(value) Sall(value)
 #define Sgl_secondword(value) dummy_location
 #define Sgl_thirdword(value) dummy_location
 #define Sgl_fourthword(value) dummy_location

 #define Sgl_sign(object) Ssign(object)
 #define Sgl_exponent(object) Sexponent(object)
 #define Sgl_signexponent(object) Ssignexponent(object)
 #define Sgl_mantissa(object) Smantissa(object)
 #define Sgl_exponentmantissa(object) Sexponentmantissa(object)
 #define Sgl_all(object) Sall(object)

 /* sgl_and_signs ands the sign bits of each argument and puts the result
  * into the first argument. sgl_or_signs ors those same sign bits */
 #define Sgl_and_signs( src1dst, src2)		\
     Sall(src1dst) = (Sall(src2)|~((unsigned int)1<<31)) & Sall(src1dst)
 #define Sgl_or_signs( src1dst, src2)		\
     Sall(src1dst) = (Sall(src2)&((unsigned int)1<<31)) | Sall(src1dst)

 /* The hidden bit is always the low bit of the exponent */
 #define Sgl_clear_exponent_set_hidden(srcdst) Deposit_sexponent(srcdst,1)
 #define Sgl_clear_signexponent_set_hidden(srcdst) \
     Deposit_ssignexponent(srcdst,1)
 #define Sgl_clear_sign(srcdst) Sall(srcdst) &= ~((unsigned int)1<<31)
 #define Sgl_clear_signexponent(srcdst) Sall(srcdst) &= 0x007fffff

 /* varamount must be less than 32 for the next three functions */
 #define Sgl_rightshift(srcdst, varamount)	\
     Sall(srcdst) >>= varamount
 #define Sgl_leftshift(srcdst, varamount)	\
     Sall(srcdst) <<= varamount
 #define Sgl_rightshift_exponentmantissa(srcdst, varamount) \
     Sall(srcdst) = \
 	(Sexponentmantissa(srcdst) >> varamount) | \
 	(Sall(srcdst) & ((unsigned int)1<<31))

 #define Sgl_leftshiftby1_withextent(left,right,result) \
     Shiftdouble(Sall(left),Extall(right),31,Sall(result))

 #define Sgl_rightshiftby1_withextent(left,right,dst)		\
     Shiftdouble(Sall(left),Extall(right),1,Extall(right))
 #define Sgl_arithrightshiftby1(srcdst)	\
     Sall(srcdst) = (int)Sall(srcdst) >> 1

 /* Sign extend the sign bit with an integer destination */
 #define Sgl_signextendedsign(value) Ssignedsign(value)

 #define Sgl_isone_hidden(sgl_value) (Shidden(sgl_value))
 #define Sgl_increment(sgl_value) Sall(sgl_value) += 1
 #define Sgl_increment_mantissa(sgl_value) \
     Deposit_smantissa(sgl_value,sgl_value+1)
 #define Sgl_decrement(sgl_value) Sall(sgl_value) -= 1

 #define Sgl_isone_sign(sgl_value) (Is_ssign(sgl_value)!=0)
 #define Sgl_isone_hiddenoverflow(sgl_value) \
     (Is_shiddenoverflow(sgl_value)!=0)
 #define Sgl_isone_lowmantissa(sgl_value) (Is_slow(sgl_value)!=0)
 #define Sgl_isone_signaling(sgl_value) (Is_ssignaling(sgl_value)!=0)
 #define Sgl_is_signalingnan(sgl_value) (Ssignalingnan(sgl_value)==0x1ff)
 #define Sgl_isnotzero(sgl_value) (Sall(sgl_value)!=0)
 #define Sgl_isnotzero_hiddenhigh7mantissa(sgl_value) \
     (Shiddenhigh7mantissa(sgl_value)!=0)
 #define Sgl_isnotzero_low4(sgl_value) (Slow4(sgl_value)!=0)
 #define Sgl_isnotzero_exponent(sgl_value) (Sexponent(sgl_value)!=0)
 #define Sgl_isnotzero_mantissa(sgl_value) (Smantissa(sgl_value)!=0)
 #define Sgl_isnotzero_exponentmantissa(sgl_value) \
     (Sexponentmantissa(sgl_value)!=0)
 #define Sgl_iszero(sgl_value) (Sall(sgl_value)==0)
 #define Sgl_iszero_signaling(sgl_value) (Is_ssignaling(sgl_value)==0)
 #define Sgl_iszero_hidden(sgl_value) (Is_shidden(sgl_value)==0)
 #define Sgl_iszero_hiddenoverflow(sgl_value) \
     (Is_shiddenoverflow(sgl_value)==0)
 #define Sgl_iszero_hiddenhigh3mantissa(sgl_value) \
     (Shiddenhigh3mantissa(sgl_value)==0)
 #define Sgl_iszero_hiddenhigh7mantissa(sgl_value) \
     (Shiddenhigh7mantissa(sgl_value)==0)
 #define Sgl_iszero_sign(sgl_value) (Is_ssign(sgl_value)==0)
 #define Sgl_iszero_exponent(sgl_value) (Sexponent(sgl_value)==0)
 #define Sgl_iszero_mantissa(sgl_value) (Smantissa(sgl_value)==0)
 #define Sgl_iszero_exponentmantissa(sgl_value) \
     (Sexponentmantissa(sgl_value)==0)
 #define Sgl_isinfinity_exponent(sgl_value) 		\
     (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT)
 #define Sgl_isnotinfinity_exponent(sgl_value) 		\
     (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT)
 #define Sgl_isinfinity(sgl_value)			\
     (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT &&	\
     Sgl_mantissa(sgl_value)==0)
 #define Sgl_isnan(sgl_value)				\
     (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT &&	\
     Sgl_mantissa(sgl_value)!=0)
 #define Sgl_isnotnan(sgl_value)				\
     (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT ||	\
     Sgl_mantissa(sgl_value)==0)
 #define Sgl_islessthan(sgl_op1,sgl_op2)			\
     (Sall(sgl_op1) < Sall(sgl_op2))
 #define Sgl_isgreaterthan(sgl_op1,sgl_op2)		\
     (Sall(sgl_op1) > Sall(sgl_op2))
 #define Sgl_isnotlessthan(sgl_op1,sgl_op2)		\
     (Sall(sgl_op1) >= Sall(sgl_op2))
 #define Sgl_isequal(sgl_op1,sgl_op2)			\
     (Sall(sgl_op1) == Sall(sgl_op2))

 #define Sgl_leftshiftby8(sgl_value) \
     Sall(sgl_value) <<= 8
 #define Sgl_leftshiftby4(sgl_value) \
     Sall(sgl_value) <<= 4
 #define Sgl_leftshiftby3(sgl_value) \
     Sall(sgl_value) <<= 3
 #define Sgl_leftshiftby2(sgl_value) \
     Sall(sgl_value) <<= 2
 #define Sgl_leftshiftby1(sgl_value) \
     Sall(sgl_value) <<= 1
 #define Sgl_rightshiftby1(sgl_value) \
     Sall(sgl_value) >>= 1
 #define Sgl_rightshiftby4(sgl_value) \
     Sall(sgl_value) >>= 4
 #define Sgl_rightshiftby8(sgl_value) \
     Sall(sgl_value) >>= 8

 #define Sgl_ismagnitudeless(signlessleft,signlessright)			\
 /*  unsigned int signlessleft, signlessright; */			\
       (signlessleft < signlessright)


 #define Sgl_copytoint_exponentmantissa(source,dest)     \
     dest = Sexponentmantissa(source)

 /* A quiet NaN has the high mantissa bit clear and at least on other (in this
  * case the adjacent bit) bit set. */
 #define Sgl_set_quiet(sgl_value) Deposit_shigh2mantissa(sgl_value,1)
 #define Sgl_set_exponent(sgl_value,exp) Deposit_sexponent(sgl_value,exp)

 #define Sgl_set_mantissa(dest,value) Deposit_smantissa(dest,value)
 #define Sgl_set_exponentmantissa(dest,value) \
     Deposit_sexponentmantissa(dest,value)

 /*  An infinity is represented with the max exponent and a zero mantissa */
 #define Sgl_setinfinity_exponent(sgl_value) \
     Deposit_sexponent(sgl_value,SGL_INFINITY_EXPONENT)
 #define Sgl_setinfinity_exponentmantissa(sgl_value)	\
     Deposit_sexponentmantissa(sgl_value, \
 	(SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))))
 #define Sgl_setinfinitypositive(sgl_value)		\
     Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH)))
 #define Sgl_setinfinitynegative(sgl_value)		\
     Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) \
     | ((unsigned int)1<<31)
 #define Sgl_setinfinity(sgl_value,sign)					\
     Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) | \
      ((unsigned int)sign << 31)
 #define Sgl_sethigh4bits(sgl_value, extsign)  \
     Deposit_shigh4(sgl_value,extsign)
 #define Sgl_set_sign(sgl_value,sign) Deposit_ssign(sgl_value,sign)
 #define Sgl_invert_sign(sgl_value)  \
     Deposit_ssign(sgl_value,~Ssign(sgl_value))
 #define Sgl_setone_sign(sgl_value) Deposit_ssign(sgl_value,1)
 #define Sgl_setone_lowmantissa(sgl_value) Deposit_slow(sgl_value,1)
 #define Sgl_setzero_sign(sgl_value)  Sall(sgl_value) &= 0x7fffffff
 #define Sgl_setzero_exponent(sgl_value) Sall(sgl_value) &= 0x807fffff
 #define Sgl_setzero_mantissa(sgl_value) Sall(sgl_value) &= 0xff800000
 #define Sgl_setzero_exponentmantissa(sgl_value)  Sall(sgl_value) &= 0x80000000
 #define Sgl_setzero(sgl_value) Sall(sgl_value) = 0
 #define Sgl_setnegativezero(sgl_value) Sall(sgl_value) = (unsigned int)1 << 31

 /* Use following macro for both overflow & underflow conditions */
 #define ovfl -
 #define unfl +
 #define Sgl_setwrapped_exponent(sgl_value,exponent,op) \
     Deposit_sexponent(sgl_value,(exponent op SGL_WRAP))

 #define Sgl_setlargestpositive(sgl_value) 				\
     Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH)))	\
                       | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 )
 #define Sgl_setlargestnegative(sgl_value)				\
     Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH)))	\
                       | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 )		\
 		      | ((unsigned int)1<<31)

 #define Sgl_setnegativeinfinity(sgl_value)	\
     Sall(sgl_value) = 				\
     ((1<<SGL_EXP_LENGTH) | SGL_INFINITY_EXPONENT) << (32-(1+SGL_EXP_LENGTH))
 #define Sgl_setlargest(sgl_value,sign) 					\
     Sall(sgl_value) = (unsigned int)sign << 31 |			\
         (((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH)))		\
 	  | ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 ))
 #define Sgl_setlargest_exponentmantissa(sgl_value)			\
     Sall(sgl_value) = Sall(sgl_value) & ((unsigned int)1<<31) |		\
         (((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH)))		\
 	  | ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 ))

 /* The high bit is always zero so arithmetic or logical shifts will work. */
 #define Sgl_right_align(srcdst,shift,extent)				\
     /* sgl_floating_point srcdst; int shift; extension extent */	\
     if (shift < 32) {							\
 	Extall(extent) = Sall(srcdst) << (32-(shift));			\
     	Sall(srcdst) >>= shift;						\
     }									\
     else {								\
 	Extall(extent) = Sall(srcdst);					\
 	Sall(srcdst) = 0;						\
     }
 #define Sgl_hiddenhigh3mantissa(sgl_value) Shiddenhigh3mantissa(sgl_value)
 #define Sgl_hidden(sgl_value) Shidden(sgl_value)
 #define Sgl_lowmantissa(sgl_value) Slow(sgl_value)

 /* The left argument is never smaller than the right argument */
 #define Sgl_subtract(sgl_left,sgl_right,sgl_result) \
     Sall(sgl_result) = Sall(sgl_left) - Sall(sgl_right)

 /* Subtract right augmented with extension from left augmented with zeros and
  * store into result and extension. */
 #define Sgl_subtract_withextension(left,right,extent,result)		\
     /* sgl_floating_point left,right,result; extension extent */	\
   Sgl_subtract(left,right,result);					\
   if((Extall(extent) = 0-Extall(extent)))				\
       Sall(result) = Sall(result)-1

 #define Sgl_addition(sgl_left,sgl_right,sgl_result) \
     Sall(sgl_result) = Sall(sgl_left) + Sall(sgl_right)

 #define Sgl_xortointp1(left,right,result)			\
     result = Sall(left) XOR Sall(right);

 #define Sgl_xorfromintp1(left,right,result)			\
     Sall(result) = left XOR Sall(right)

 /* Need to Initialize */
 #define Sgl_makequietnan(dest)						\
     Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH))	\
                  | (1<<(32-(1+SGL_EXP_LENGTH+2)))
 #define Sgl_makesignalingnan(dest)					\
     Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH))	\
                  | (1<<(32-(1+SGL_EXP_LENGTH+1)))

 #define Sgl_normalize(sgl_opnd,exponent)			\
 	while(Sgl_iszero_hiddenhigh7mantissa(sgl_opnd)) {	\
 		Sgl_leftshiftby8(sgl_opnd);			\
 		exponent -= 8;					\
 	}							\
 	if(Sgl_iszero_hiddenhigh3mantissa(sgl_opnd)) {		\
 		Sgl_leftshiftby4(sgl_opnd);			\
 		exponent -= 4;					\
 	}							\
 	while(Sgl_iszero_hidden(sgl_opnd)) {			\
 		Sgl_leftshiftby1(sgl_opnd);			\
 		exponent -= 1;					\
 	}

 #define Sgl_setoverflow(sgl_opnd)				\
 	/* set result to infinity or largest number */		\
 	switch (Rounding_mode()) {				\
 		case ROUNDPLUS:					\
 			if (Sgl_isone_sign(sgl_opnd)) {		\
 				Sgl_setlargestnegative(sgl_opnd); \
 			}					\
 			else {					\
 				Sgl_setinfinitypositive(sgl_opnd); \
 			}					\
 			break;					\
 		case ROUNDMINUS:				\
 			if (Sgl_iszero_sign(sgl_opnd)) {	\
 				Sgl_setlargestpositive(sgl_opnd); \
 			}					\
 			else {					\
 				Sgl_setinfinitynegative(sgl_opnd); \
 			}					\
 			break;					\
 		case ROUNDNEAREST:				\
 			Sgl_setinfinity_exponentmantissa(sgl_opnd); \
 			break;					\
 		case ROUNDZERO:					\
 			Sgl_setlargest_exponentmantissa(sgl_opnd); \
 	}

 #define Sgl_denormalize(opnd,exponent,guard,sticky,inexact)		\
 	Sgl_clear_signexponent_set_hidden(opnd);			\
 	if (exponent >= (1 - SGL_P)) {					\
 		guard = (Sall(opnd) >> -exponent) & 1;			\
 		if (exponent < 0) sticky |= Sall(opnd) << (32+exponent); \
 		inexact = guard | sticky;				\
 		Sall(opnd) >>= (1-exponent);				\
 	}								\
 	else {								\
 		guard = 0;						\
 		sticky |= Sall(opnd);					\
 		inexact = sticky;					\
 		Sgl_setzero(opnd);					\
 	}

 /*
  * The fused multiply add instructions requires a single extended format,
  * with 48 bits of mantissa.
  */
 #define SGLEXT_THRESHOLD 48

 #define Sglext_setzero(valA,valB)	\
     Sextallp1(valA) = 0; Sextallp2(valB) = 0

 #define Sglext_isnotzero_mantissap2(valB) (Sextallp2(valB)!=0)
 #define Sglext_isone_lowp1(val) (Sextlowp1(val)!=0)
 #define Sglext_isone_highp2(val) (Sexthighp2(val)!=0)
 #define Sglext_isnotzero_low31p2(val) (Sextlow31p2(val)!=0)
 #define Sglext_iszero(valA,valB) (Sextallp1(valA)==0 && Sextallp2(valB)==0)

 #define Sgl_copytoptr(src,destptr) *destptr = src
 #define Sgl_copyfromptr(srcptr,dest) dest = *srcptr
 #define Sglext_copy(srca,srcb,desta,destb) \
     Sextallp1(desta) = Sextallp1(srca);	\
     Sextallp2(destb) = Sextallp2(srcb)
 #define Sgl_copyto_sglext(src1,dest1,dest2) \
 	Sextallp1(dest1) = Sall(src1); Sextallp2(dest2) = 0

 #define Sglext_swap_lower(leftp2,rightp2)  \
     Sextallp2(leftp2)  = Sextallp2(leftp2) XOR Sextallp2(rightp2);  \
     Sextallp2(rightp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2);  \
     Sextallp2(leftp2)  = Sextallp2(leftp2) XOR Sextallp2(rightp2)

 #define Sglext_setone_lowmantissap2(value) Deposit_dlowp2(value,1)

 /* The high bit is always zero so arithmetic or logical shifts will work. */
 #define Sglext_right_align(srcdstA,srcdstB,shift) \
   {int shiftamt, sticky;						\
     shiftamt = shift % 32;						\
     sticky = 0;								\
     switch (shift/32) {							\
      case 0: if (shiftamt > 0) {					\
 	        sticky = Sextallp2(srcdstB) << 32 - (shiftamt);		\
                 Variable_shift_double(Sextallp1(srcdstA),		\
 		 Sextallp2(srcdstB),shiftamt,Sextallp2(srcdstB));	\
 	        Sextallp1(srcdstA) >>= shiftamt;			\
 	     }								\
 	     break;							\
      case 1: if (shiftamt > 0) {					\
 	        sticky = (Sextallp1(srcdstA) << 32 - (shiftamt)) |	\
 			 Sextallp2(srcdstB);				\
 	     }								\
 	     else {							\
 		sticky = Sextallp2(srcdstB);				\
 	     }								\
 	     Sextallp2(srcdstB) = Sextallp1(srcdstA) >> shiftamt;	\
 	     Sextallp1(srcdstA) = 0;					\
 	     break;							\
     }									\
     if (sticky) Sglext_setone_lowmantissap2(srcdstB);			\
   }

 /* The left argument is never smaller than the right argument */
 #define Sglext_subtract(lefta,leftb,righta,rightb,resulta,resultb) \
     if( Sextallp2(rightb) > Sextallp2(leftb) ) Sextallp1(lefta)--; \
     Sextallp2(resultb) = Sextallp2(leftb) - Sextallp2(rightb);	\
     Sextallp1(resulta) = Sextallp1(lefta) - Sextallp1(righta)

 #define Sglext_addition(lefta,leftb,righta,rightb,resulta,resultb) \
     /* If the sum of the low words is less than either source, then \
      * an overflow into the next word occurred. */ \
     if ((Sextallp2(resultb) = Sextallp2(leftb)+Sextallp2(rightb)) < \
         Sextallp2(rightb)) \
 	    Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)+1; \
     else Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)


 #define Sglext_arithrightshiftby1(srcdstA,srcdstB)	\
     Shiftdouble(Sextallp1(srcdstA),Sextallp2(srcdstB),1,Sextallp2(srcdstB)); \
     Sextallp1(srcdstA) = (int)Sextallp1(srcdstA) >> 1

 #define Sglext_leftshiftby8(valA,valB) \
     Shiftdouble(Sextallp1(valA),Sextallp2(valB),24,Sextallp1(valA)); \
     Sextallp2(valB) <<= 8
 #define Sglext_leftshiftby4(valA,valB) \
     Shiftdouble(Sextallp1(valA),Sextallp2(valB),28,Sextallp1(valA)); \
     Sextallp2(valB) <<= 4
 #define Sglext_leftshiftby3(valA,valB) \
     Shiftdouble(Sextallp1(valA),Sextallp2(valB),29,Sextallp1(valA)); \
     Sextallp2(valB) <<= 3
 #define Sglext_leftshiftby2(valA,valB) \
     Shiftdouble(Sextallp1(valA),Sextallp2(valB),30,Sextallp1(valA)); \
     Sextallp2(valB) <<= 2
 #define Sglext_leftshiftby1(valA,valB) \
     Shiftdouble(Sextallp1(valA),Sextallp2(valB),31,Sextallp1(valA)); \
     Sextallp2(valB) <<= 1

 #define Sglext_rightshiftby4(valueA,valueB) \
     Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),4,Sextallp2(valueB)); \
     Sextallp1(valueA) >>= 4
 #define Sglext_rightshiftby3(valueA,valueB) \
     Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),3,Sextallp2(valueB)); \
     Sextallp1(valueA) >>= 3
 #define Sglext_rightshiftby1(valueA,valueB) \
     Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),1,Sextallp2(valueB)); \
     Sextallp1(valueA) >>= 1

 #define Sglext_xortointp1(left,right,result) Sgl_xortointp1(left,right,result)
 #define Sglext_xorfromintp1(left,right,result) \
 	Sgl_xorfromintp1(left,right,result)
 #define Sglext_copytoint_exponentmantissa(src,dest) \
 	Sgl_copytoint_exponentmantissa(src,dest)
 #define Sglext_ismagnitudeless(signlessleft,signlessright) \
 	Sgl_ismagnitudeless(signlessleft,signlessright)

 #define Sglext_set_sign(dbl_value,sign)  Sgl_set_sign(dbl_value,sign)
 #define Sglext_clear_signexponent_set_hidden(srcdst) \
 	Sgl_clear_signexponent_set_hidden(srcdst)
 #define Sglext_clear_signexponent(srcdst) Sgl_clear_signexponent(srcdst)
 #define Sglext_clear_sign(srcdst) Sgl_clear_sign(srcdst)
 #define Sglext_isone_hidden(dbl_value) Sgl_isone_hidden(dbl_value)

 #define Sglext_denormalize(opndp1,opndp2,exponent,is_tiny)		\
   {int sticky;								\
     is_tiny = TRUE;							\
     if (exponent == 0 && Sextallp2(opndp2)) {				\
 	switch (Rounding_mode()) {					\
 	case ROUNDPLUS:							\
 		if (Sgl_iszero_sign(opndp1))				\
 			if (Sgl_isone_hiddenoverflow(opndp1 + 1))	\
 				is_tiny = FALSE;			\
 		break;							\
 	case ROUNDMINUS:						\
 		if (Sgl_isone_sign(opndp1)) {				\
 			if (Sgl_isone_hiddenoverflow(opndp1 + 1))	\
 				is_tiny = FALSE;			\
 		}							\
 		break;							\
 	case ROUNDNEAREST:						\
 		if (Sglext_isone_highp2(opndp2) &&			\
 		    (Sglext_isone_lowp1(opndp1) || 			\
 		     Sglext_isnotzero_low31p2(opndp2)))			\
 			if (Sgl_isone_hiddenoverflow(opndp1 + 1))	\
 				is_tiny = FALSE;			\
 		break;							\
 	}								\
     }									\
     Sglext_clear_signexponent_set_hidden(opndp1);			\
     if (exponent >= (1-DBL_P)) {					\
 	if (exponent >= -31) {						\
 	    if (exponent > -31) {					\
 		sticky = Sextallp2(opndp2) << 31+exponent;		\
 		Variable_shift_double(opndp1,opndp2,1-exponent,opndp2);	\
 		Sextallp1(opndp1) >>= 1-exponent;			\
 	    }								\
 	    else {							\
 		sticky = Sextallp2(opndp2);				\
 		Sextallp2(opndp2) = Sextallp1(opndp1);			\
 		Sextallp1(opndp1) = 0;					\
 	    }								\
 	}								\
 	else {								\
 	    sticky = (Sextallp1(opndp1) << 31+exponent) | 		\
 		     Sextallp2(opndp2);					\
 	    Sextallp2(opndp2) = Sextallp1(opndp1) >> -31-exponent;	\
 	    Sextallp1(opndp1) = 0;					\
 	}								\
     }									\
     else {								\
 	sticky = Sextallp1(opndp1) | Sextallp2(opndp2);			\
 	Sglext_setzero(opndp1,opndp2);					\
     }									\
     if (sticky) Sglext_setone_lowmantissap2(opndp2);			\
     exponent = 0;							\
   }
	/*
	* Linux/PA-RISC Project (http://www.parisc-linux.org/)
	*
	* Floating-point emulation code
	* Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
	*
	* This program 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, or (at your option)
	* any later version.
	*
	* This program 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
	*/

	#ifdef __NO_PA_HDRS
	PA header file -- do not include this header file for non-PA builds.
	#endif

	/* 32-bit word grabing functions */
	#define Sgl_firstword(value) Sall(value)
	#define Sgl_secondword(value) dummy_location
	#define Sgl_thirdword(value) dummy_location
	#define Sgl_fourthword(value) dummy_location

	#define Sgl_sign(object) Ssign(object)
	#define Sgl_exponent(object) Sexponent(object)
	#define Sgl_signexponent(object) Ssignexponent(object)
	#define Sgl_mantissa(object) Smantissa(object)
	#define Sgl_exponentmantissa(object) Sexponentmantissa(object)
	#define Sgl_all(object) Sall(object)

	/* sgl_and_signs ands the sign bits of each argument and puts the result
	* into the first argument. sgl_or_signs ors those same sign bits */
	#define Sgl_and_signs( src1dst, src2) \
	Sall(src1dst) = (Sall(src2)\|~((unsigned int)1<<31)) & Sall(src1dst)
	#define Sgl_or_signs( src1dst, src2) \
	Sall(src1dst) = (Sall(src2)&((unsigned int)1<<31)) \| Sall(src1dst)

	/* The hidden bit is always the low bit of the exponent */
	#define Sgl_clear_exponent_set_hidden(srcdst) Deposit_sexponent(srcdst,1)
	#define Sgl_clear_signexponent_set_hidden(srcdst) \
	Deposit_ssignexponent(srcdst,1)
	#define Sgl_clear_sign(srcdst) Sall(srcdst) &= ~((unsigned int)1<<31)
	#define Sgl_clear_signexponent(srcdst) Sall(srcdst) &= 0x007fffff

	/* varamount must be less than 32 for the next three functions */
	#define Sgl_rightshift(srcdst, varamount) \
	Sall(srcdst) >>= varamount
	#define Sgl_leftshift(srcdst, varamount) \
	Sall(srcdst) <<= varamount
	#define Sgl_rightshift_exponentmantissa(srcdst, varamount) \
	Sall(srcdst) = \
	(Sexponentmantissa(srcdst) >> varamount) \| \
	(Sall(srcdst) & ((unsigned int)1<<31))

	#define Sgl_leftshiftby1_withextent(left,right,result) \
	Shiftdouble(Sall(left),Extall(right),31,Sall(result))

	#define Sgl_rightshiftby1_withextent(left,right,dst) \
	Shiftdouble(Sall(left),Extall(right),1,Extall(right))
	#define Sgl_arithrightshiftby1(srcdst) \
	Sall(srcdst) = (int)Sall(srcdst) >> 1

	/* Sign extend the sign bit with an integer destination */
	#define Sgl_signextendedsign(value) Ssignedsign(value)

	#define Sgl_isone_hidden(sgl_value) (Shidden(sgl_value))
	#define Sgl_increment(sgl_value) Sall(sgl_value) += 1
	#define Sgl_increment_mantissa(sgl_value) \
	Deposit_smantissa(sgl_value,sgl_value+1)
	#define Sgl_decrement(sgl_value) Sall(sgl_value) -= 1

	#define Sgl_isone_sign(sgl_value) (Is_ssign(sgl_value)!=0)
	#define Sgl_isone_hiddenoverflow(sgl_value) \
	(Is_shiddenoverflow(sgl_value)!=0)
	#define Sgl_isone_lowmantissa(sgl_value) (Is_slow(sgl_value)!=0)
	#define Sgl_isone_signaling(sgl_value) (Is_ssignaling(sgl_value)!=0)
	#define Sgl_is_signalingnan(sgl_value) (Ssignalingnan(sgl_value)==0x1ff)
	#define Sgl_isnotzero(sgl_value) (Sall(sgl_value)!=0)
	#define Sgl_isnotzero_hiddenhigh7mantissa(sgl_value) \
	(Shiddenhigh7mantissa(sgl_value)!=0)
	#define Sgl_isnotzero_low4(sgl_value) (Slow4(sgl_value)!=0)
	#define Sgl_isnotzero_exponent(sgl_value) (Sexponent(sgl_value)!=0)
	#define Sgl_isnotzero_mantissa(sgl_value) (Smantissa(sgl_value)!=0)
	#define Sgl_isnotzero_exponentmantissa(sgl_value) \
	(Sexponentmantissa(sgl_value)!=0)
	#define Sgl_iszero(sgl_value) (Sall(sgl_value)==0)
	#define Sgl_iszero_signaling(sgl_value) (Is_ssignaling(sgl_value)==0)
	#define Sgl_iszero_hidden(sgl_value) (Is_shidden(sgl_value)==0)
	#define Sgl_iszero_hiddenoverflow(sgl_value) \
	(Is_shiddenoverflow(sgl_value)==0)
	#define Sgl_iszero_hiddenhigh3mantissa(sgl_value) \
	(Shiddenhigh3mantissa(sgl_value)==0)
	#define Sgl_iszero_hiddenhigh7mantissa(sgl_value) \
	(Shiddenhigh7mantissa(sgl_value)==0)
	#define Sgl_iszero_sign(sgl_value) (Is_ssign(sgl_value)==0)
	#define Sgl_iszero_exponent(sgl_value) (Sexponent(sgl_value)==0)
	#define Sgl_iszero_mantissa(sgl_value) (Smantissa(sgl_value)==0)
	#define Sgl_iszero_exponentmantissa(sgl_value) \
	(Sexponentmantissa(sgl_value)==0)
	#define Sgl_isinfinity_exponent(sgl_value) \
	(Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT)
	#define Sgl_isnotinfinity_exponent(sgl_value) \
	(Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT)
	#define Sgl_isinfinity(sgl_value) \
	(Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \
	Sgl_mantissa(sgl_value)==0)
	#define Sgl_isnan(sgl_value) \
	(Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \
	Sgl_mantissa(sgl_value)!=0)
	#define Sgl_isnotnan(sgl_value) \
	(Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT \|\| \
	Sgl_mantissa(sgl_value)==0)
	#define Sgl_islessthan(sgl_op1,sgl_op2) \
	(Sall(sgl_op1) < Sall(sgl_op2))
	#define Sgl_isgreaterthan(sgl_op1,sgl_op2) \
	(Sall(sgl_op1) > Sall(sgl_op2))
	#define Sgl_isnotlessthan(sgl_op1,sgl_op2) \
	(Sall(sgl_op1) >= Sall(sgl_op2))
	#define Sgl_isequal(sgl_op1,sgl_op2) \
	(Sall(sgl_op1) == Sall(sgl_op2))

	#define Sgl_leftshiftby8(sgl_value) \
	Sall(sgl_value) <<= 8
	#define Sgl_leftshiftby4(sgl_value) \
	Sall(sgl_value) <<= 4
	#define Sgl_leftshiftby3(sgl_value) \
	Sall(sgl_value) <<= 3
	#define Sgl_leftshiftby2(sgl_value) \
	Sall(sgl_value) <<= 2
	#define Sgl_leftshiftby1(sgl_value) \
	Sall(sgl_value) <<= 1
	#define Sgl_rightshiftby1(sgl_value) \
	Sall(sgl_value) >>= 1
	#define Sgl_rightshiftby4(sgl_value) \
	Sall(sgl_value) >>= 4
	#define Sgl_rightshiftby8(sgl_value) \
	Sall(sgl_value) >>= 8

	#define Sgl_ismagnitudeless(signlessleft,signlessright) \
	/* unsigned int signlessleft, signlessright; */ \
	(signlessleft < signlessright)


	#define Sgl_copytoint_exponentmantissa(source,dest) \
	dest = Sexponentmantissa(source)

	/* A quiet NaN has the high mantissa bit clear and at least on other (in this
	* case the adjacent bit) bit set. */
	#define Sgl_set_quiet(sgl_value) Deposit_shigh2mantissa(sgl_value,1)
	#define Sgl_set_exponent(sgl_value,exp) Deposit_sexponent(sgl_value,exp)

	#define Sgl_set_mantissa(dest,value) Deposit_smantissa(dest,value)
	#define Sgl_set_exponentmantissa(dest,value) \
	Deposit_sexponentmantissa(dest,value)

	/* An infinity is represented with the max exponent and a zero mantissa */
	#define Sgl_setinfinity_exponent(sgl_value) \
	Deposit_sexponent(sgl_value,SGL_INFINITY_EXPONENT)
	#define Sgl_setinfinity_exponentmantissa(sgl_value) \
	Deposit_sexponentmantissa(sgl_value, \
	(SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))))
	#define Sgl_setinfinitypositive(sgl_value) \
	Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH)))
	#define Sgl_setinfinitynegative(sgl_value) \
	Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) \
	\| ((unsigned int)1<<31)
	#define Sgl_setinfinity(sgl_value,sign) \
	Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) \| \
	((unsigned int)sign << 31)
	#define Sgl_sethigh4bits(sgl_value, extsign) \
	Deposit_shigh4(sgl_value,extsign)
	#define Sgl_set_sign(sgl_value,sign) Deposit_ssign(sgl_value,sign)
	#define Sgl_invert_sign(sgl_value) \
	Deposit_ssign(sgl_value,~Ssign(sgl_value))
	#define Sgl_setone_sign(sgl_value) Deposit_ssign(sgl_value,1)
	#define Sgl_setone_lowmantissa(sgl_value) Deposit_slow(sgl_value,1)
	#define Sgl_setzero_sign(sgl_value) Sall(sgl_value) &= 0x7fffffff
	#define Sgl_setzero_exponent(sgl_value) Sall(sgl_value) &= 0x807fffff
	#define Sgl_setzero_mantissa(sgl_value) Sall(sgl_value) &= 0xff800000
	#define Sgl_setzero_exponentmantissa(sgl_value) Sall(sgl_value) &= 0x80000000
	#define Sgl_setzero(sgl_value) Sall(sgl_value) = 0
	#define Sgl_setnegativezero(sgl_value) Sall(sgl_value) = (unsigned int)1 << 31

	/* Use following macro for both overflow & underflow conditions */
	#define ovfl -
	#define unfl +
	#define Sgl_setwrapped_exponent(sgl_value,exponent,op) \
	Deposit_sexponent(sgl_value,(exponent op SGL_WRAP))

	#define Sgl_setlargestpositive(sgl_value) \
	Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \
	\| ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 )
	#define Sgl_setlargestnegative(sgl_value) \
	Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \
	\| ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 ) \
	\| ((unsigned int)1<<31)

	#define Sgl_setnegativeinfinity(sgl_value) \
	Sall(sgl_value) = \
	((1<<SGL_EXP_LENGTH) \| SGL_INFINITY_EXPONENT) << (32-(1+SGL_EXP_LENGTH))
	#define Sgl_setlargest(sgl_value,sign) \
	Sall(sgl_value) = (unsigned int)sign << 31 \| \
	(((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \
	\| ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 ))
	#define Sgl_setlargest_exponentmantissa(sgl_value) \
	Sall(sgl_value) = Sall(sgl_value) & ((unsigned int)1<<31) \| \
	(((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \
	\| ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 ))

	/* The high bit is always zero so arithmetic or logical shifts will work. */
	#define Sgl_right_align(srcdst,shift,extent) \
	/* sgl_floating_point srcdst; int shift; extension extent */ \
	if (shift < 32) { \
	Extall(extent) = Sall(srcdst) << (32-(shift)); \
	Sall(srcdst) >>= shift; \
	} \
	else { \
	Extall(extent) = Sall(srcdst); \
	Sall(srcdst) = 0; \
	}
	#define Sgl_hiddenhigh3mantissa(sgl_value) Shiddenhigh3mantissa(sgl_value)
	#define Sgl_hidden(sgl_value) Shidden(sgl_value)
	#define Sgl_lowmantissa(sgl_value) Slow(sgl_value)

	/* The left argument is never smaller than the right argument */
	#define Sgl_subtract(sgl_left,sgl_right,sgl_result) \
	Sall(sgl_result) = Sall(sgl_left) - Sall(sgl_right)

	/* Subtract right augmented with extension from left augmented with zeros and
	* store into result and extension. */
	#define Sgl_subtract_withextension(left,right,extent,result) \
	/* sgl_floating_point left,right,result; extension extent */ \
	Sgl_subtract(left,right,result); \
	if((Extall(extent) = 0-Extall(extent))) \
	Sall(result) = Sall(result)-1

	#define Sgl_addition(sgl_left,sgl_right,sgl_result) \
	Sall(sgl_result) = Sall(sgl_left) + Sall(sgl_right)

	#define Sgl_xortointp1(left,right,result) \
	result = Sall(left) XOR Sall(right);

	#define Sgl_xorfromintp1(left,right,result) \
	Sall(result) = left XOR Sall(right)

	/* Need to Initialize */
	#define Sgl_makequietnan(dest) \
	Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \
	\| (1<<(32-(1+SGL_EXP_LENGTH+2)))
	#define Sgl_makesignalingnan(dest) \
	Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \
	\| (1<<(32-(1+SGL_EXP_LENGTH+1)))

	#define Sgl_normalize(sgl_opnd,exponent) \
	while(Sgl_iszero_hiddenhigh7mantissa(sgl_opnd)) { \
	Sgl_leftshiftby8(sgl_opnd); \
	exponent -= 8; \
	} \
	if(Sgl_iszero_hiddenhigh3mantissa(sgl_opnd)) { \
	Sgl_leftshiftby4(sgl_opnd); \
	exponent -= 4; \
	} \
	while(Sgl_iszero_hidden(sgl_opnd)) { \
	Sgl_leftshiftby1(sgl_opnd); \
	exponent -= 1; \
	}

	#define Sgl_setoverflow(sgl_opnd) \
	/* set result to infinity or largest number */ \
	switch (Rounding_mode()) { \
	case ROUNDPLUS: \
	if (Sgl_isone_sign(sgl_opnd)) { \
	Sgl_setlargestnegative(sgl_opnd); \
	} \
	else { \
	Sgl_setinfinitypositive(sgl_opnd); \
	} \
	break; \
	case ROUNDMINUS: \
	if (Sgl_iszero_sign(sgl_opnd)) { \
	Sgl_setlargestpositive(sgl_opnd); \
	} \
	else { \
	Sgl_setinfinitynegative(sgl_opnd); \
	} \
	break; \
	case ROUNDNEAREST: \
	Sgl_setinfinity_exponentmantissa(sgl_opnd); \
	break; \
	case ROUNDZERO: \
	Sgl_setlargest_exponentmantissa(sgl_opnd); \
	}

	#define Sgl_denormalize(opnd,exponent,guard,sticky,inexact) \
	Sgl_clear_signexponent_set_hidden(opnd); \
	if (exponent >= (1 - SGL_P)) { \
	guard = (Sall(opnd) >> -exponent) & 1; \
	if (exponent < 0) sticky \|= Sall(opnd) << (32+exponent); \
	inexact = guard \| sticky; \
	Sall(opnd) >>= (1-exponent); \
	} \
	else { \
	guard = 0; \
	sticky \|= Sall(opnd); \
	inexact = sticky; \
	Sgl_setzero(opnd); \
	}

	/*
	* The fused multiply add instructions requires a single extended format,
	* with 48 bits of mantissa.
	*/
	#define SGLEXT_THRESHOLD 48

	#define Sglext_setzero(valA,valB) \
	Sextallp1(valA) = 0; Sextallp2(valB) = 0

	#define Sglext_isnotzero_mantissap2(valB) (Sextallp2(valB)!=0)
	#define Sglext_isone_lowp1(val) (Sextlowp1(val)!=0)
	#define Sglext_isone_highp2(val) (Sexthighp2(val)!=0)
	#define Sglext_isnotzero_low31p2(val) (Sextlow31p2(val)!=0)
	#define Sglext_iszero(valA,valB) (Sextallp1(valA)==0 && Sextallp2(valB)==0)

	#define Sgl_copytoptr(src,destptr) *destptr = src
	#define Sgl_copyfromptr(srcptr,dest) dest = *srcptr
	#define Sglext_copy(srca,srcb,desta,destb) \
	Sextallp1(desta) = Sextallp1(srca); \
	Sextallp2(destb) = Sextallp2(srcb)
	#define Sgl_copyto_sglext(src1,dest1,dest2) \
	Sextallp1(dest1) = Sall(src1); Sextallp2(dest2) = 0

	#define Sglext_swap_lower(leftp2,rightp2) \
	Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \
	Sextallp2(rightp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \
	Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2)

	#define Sglext_setone_lowmantissap2(value) Deposit_dlowp2(value,1)

	/* The high bit is always zero so arithmetic or logical shifts will work. */
	#define Sglext_right_align(srcdstA,srcdstB,shift) \
	{int shiftamt, sticky; \
	shiftamt = shift % 32; \
	sticky = 0; \
	switch (shift/32) { \
	case 0: if (shiftamt > 0) { \
	sticky = Sextallp2(srcdstB) << 32 - (shiftamt); \
	Variable_shift_double(Sextallp1(srcdstA), \
	Sextallp2(srcdstB),shiftamt,Sextallp2(srcdstB)); \
	Sextallp1(srcdstA) >>= shiftamt; \
	} \
	break; \
	case 1: if (shiftamt > 0) { \
	sticky = (Sextallp1(srcdstA) << 32 - (shiftamt)) \| \
	Sextallp2(srcdstB); \
	} \
	else { \
	sticky = Sextallp2(srcdstB); \
	} \
	Sextallp2(srcdstB) = Sextallp1(srcdstA) >> shiftamt; \
	Sextallp1(srcdstA) = 0; \
	break; \
	} \
	if (sticky) Sglext_setone_lowmantissap2(srcdstB); \
	}

	/* The left argument is never smaller than the right argument */
	#define Sglext_subtract(lefta,leftb,righta,rightb,resulta,resultb) \
	if( Sextallp2(rightb) > Sextallp2(leftb) ) Sextallp1(lefta)--; \
	Sextallp2(resultb) = Sextallp2(leftb) - Sextallp2(rightb); \
	Sextallp1(resulta) = Sextallp1(lefta) - Sextallp1(righta)

	#define Sglext_addition(lefta,leftb,righta,rightb,resulta,resultb) \
	/* If the sum of the low words is less than either source, then \
	* an overflow into the next word occurred. */ \
	if ((Sextallp2(resultb) = Sextallp2(leftb)+Sextallp2(rightb)) < \
	Sextallp2(rightb)) \
	Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)+1; \
	else Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)


	#define Sglext_arithrightshiftby1(srcdstA,srcdstB) \
	Shiftdouble(Sextallp1(srcdstA),Sextallp2(srcdstB),1,Sextallp2(srcdstB)); \
	Sextallp1(srcdstA) = (int)Sextallp1(srcdstA) >> 1

	#define Sglext_leftshiftby8(valA,valB) \
	Shiftdouble(Sextallp1(valA),Sextallp2(valB),24,Sextallp1(valA)); \
	Sextallp2(valB) <<= 8
	#define Sglext_leftshiftby4(valA,valB) \
	Shiftdouble(Sextallp1(valA),Sextallp2(valB),28,Sextallp1(valA)); \
	Sextallp2(valB) <<= 4
	#define Sglext_leftshiftby3(valA,valB) \
	Shiftdouble(Sextallp1(valA),Sextallp2(valB),29,Sextallp1(valA)); \
	Sextallp2(valB) <<= 3
	#define Sglext_leftshiftby2(valA,valB) \
	Shiftdouble(Sextallp1(valA),Sextallp2(valB),30,Sextallp1(valA)); \
	Sextallp2(valB) <<= 2
	#define Sglext_leftshiftby1(valA,valB) \
	Shiftdouble(Sextallp1(valA),Sextallp2(valB),31,Sextallp1(valA)); \
	Sextallp2(valB) <<= 1

	#define Sglext_rightshiftby4(valueA,valueB) \
	Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),4,Sextallp2(valueB)); \
	Sextallp1(valueA) >>= 4
	#define Sglext_rightshiftby3(valueA,valueB) \
	Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),3,Sextallp2(valueB)); \
	Sextallp1(valueA) >>= 3
	#define Sglext_rightshiftby1(valueA,valueB) \
	Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),1,Sextallp2(valueB)); \
	Sextallp1(valueA) >>= 1

	#define Sglext_xortointp1(left,right,result) Sgl_xortointp1(left,right,result)
	#define Sglext_xorfromintp1(left,right,result) \
	Sgl_xorfromintp1(left,right,result)
	#define Sglext_copytoint_exponentmantissa(src,dest) \
	Sgl_copytoint_exponentmantissa(src,dest)
	#define Sglext_ismagnitudeless(signlessleft,signlessright) \
	Sgl_ismagnitudeless(signlessleft,signlessright)

	#define Sglext_set_sign(dbl_value,sign) Sgl_set_sign(dbl_value,sign)
	#define Sglext_clear_signexponent_set_hidden(srcdst) \
	Sgl_clear_signexponent_set_hidden(srcdst)
	#define Sglext_clear_signexponent(srcdst) Sgl_clear_signexponent(srcdst)
	#define Sglext_clear_sign(srcdst) Sgl_clear_sign(srcdst)
	#define Sglext_isone_hidden(dbl_value) Sgl_isone_hidden(dbl_value)

	#define Sglext_denormalize(opndp1,opndp2,exponent,is_tiny) \
	{int sticky; \
	is_tiny = TRUE; \
	if (exponent == 0 && Sextallp2(opndp2)) { \
	switch (Rounding_mode()) { \
	case ROUNDPLUS: \
	if (Sgl_iszero_sign(opndp1)) \
	if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \
	is_tiny = FALSE; \
	break; \
	case ROUNDMINUS: \
	if (Sgl_isone_sign(opndp1)) { \
	if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \
	is_tiny = FALSE; \
	} \
	break; \
	case ROUNDNEAREST: \
	if (Sglext_isone_highp2(opndp2) && \
	(Sglext_isone_lowp1(opndp1) \|\| \
	Sglext_isnotzero_low31p2(opndp2))) \
	if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \
	is_tiny = FALSE; \
	break; \
	} \
	} \
	Sglext_clear_signexponent_set_hidden(opndp1); \
	if (exponent >= (1-DBL_P)) { \
	if (exponent >= -31) { \
	if (exponent > -31) { \
	sticky = Sextallp2(opndp2) << 31+exponent; \
	Variable_shift_double(opndp1,opndp2,1-exponent,opndp2); \
	Sextallp1(opndp1) >>= 1-exponent; \
	} \
	else { \
	sticky = Sextallp2(opndp2); \
	Sextallp2(opndp2) = Sextallp1(opndp1); \
	Sextallp1(opndp1) = 0; \
	} \
	} \
	else { \
	sticky = (Sextallp1(opndp1) << 31+exponent) \| \
	Sextallp2(opndp2); \
	Sextallp2(opndp2) = Sextallp1(opndp1) >> -31-exponent; \
	Sextallp1(opndp1) = 0; \
	} \
	} \
	else { \
	sticky = Sextallp1(opndp1) \| Sextallp2(opndp2); \
	Sglext_setzero(opndp1,opndp2); \
	} \
	if (sticky) Sglext_setone_lowmantissap2(opndp2); \
	exponent = 0; \
	}