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Diffstat (limited to 'arch/parisc/math-emu/dbl_float.h')
| -rw-r--r-- | arch/parisc/math-emu/dbl_float.h | 847 |
1 files changed, 847 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/dbl_float.h b/arch/parisc/math-emu/dbl_float.h new file mode 100644 index 00000000000..1570e2e0a32 --- /dev/null +++ b/arch/parisc/math-emu/dbl_float.h @@ -0,0 +1,847 @@ +/* + * 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 Dbl_firstword(value) Dallp1(value) +#define Dbl_secondword(value) Dallp2(value) +#define Dbl_thirdword(value) dummy_location +#define Dbl_fourthword(value) dummy_location + +#define Dbl_sign(object) Dsign(object) +#define Dbl_exponent(object) Dexponent(object) +#define Dbl_signexponent(object) Dsignexponent(object) +#define Dbl_mantissap1(object) Dmantissap1(object) +#define Dbl_mantissap2(object) Dmantissap2(object) +#define Dbl_exponentmantissap1(object) Dexponentmantissap1(object) +#define Dbl_allp1(object) Dallp1(object) +#define Dbl_allp2(object) Dallp2(object) + +/* dbl_and_signs ands the sign bits of each argument and puts the result + * into the first argument. dbl_or_signs ors those same sign bits */ +#define Dbl_and_signs( src1dst, src2) \ + Dallp1(src1dst) = (Dallp1(src2)|~((unsigned int)1<<31)) & Dallp1(src1dst) +#define Dbl_or_signs( src1dst, src2) \ + Dallp1(src1dst) = (Dallp1(src2)&((unsigned int)1<<31)) | Dallp1(src1dst) + +/* The hidden bit is always the low bit of the exponent */ +#define Dbl_clear_exponent_set_hidden(srcdst) Deposit_dexponent(srcdst,1) +#define Dbl_clear_signexponent_set_hidden(srcdst) \ + Deposit_dsignexponent(srcdst,1) +#define Dbl_clear_sign(srcdst) Dallp1(srcdst) &= ~((unsigned int)1<<31) +#define Dbl_clear_signexponent(srcdst) \ + Dallp1(srcdst) &= Dmantissap1((unsigned int)-1) + +/* Exponent field for doubles has already been cleared and may be + * included in the shift. Here we need to generate two double width + * variable shifts. The insignificant bits can be ignored. + * MTSAR f(varamount) + * VSHD srcdst.high,srcdst.low => srcdst.low + * VSHD 0,srcdst.high => srcdst.high + * This is very difficult to model with C expressions since the shift amount + * could exceed 32. */ +/* varamount must be less than 64 */ +#define Dbl_rightshift(srcdstA, srcdstB, varamount) \ + {if((varamount) >= 32) { \ + Dallp2(srcdstB) = Dallp1(srcdstA) >> (varamount-32); \ + Dallp1(srcdstA)=0; \ + } \ + else if(varamount > 0) { \ + Variable_shift_double(Dallp1(srcdstA), Dallp2(srcdstB), \ + (varamount), Dallp2(srcdstB)); \ + Dallp1(srcdstA) >>= varamount; \ + } } +/* varamount must be less than 64 */ +#define Dbl_rightshift_exponentmantissa(srcdstA, srcdstB, varamount) \ + {if((varamount) >= 32) { \ + Dallp2(srcdstB) = Dexponentmantissap1(srcdstA) >> (varamount-32); \ + Dallp1(srcdstA) &= ((unsigned int)1<<31); /* clear expmant field */ \ + } \ + else if(varamount > 0) { \ + Variable_shift_double(Dexponentmantissap1(srcdstA), Dallp2(srcdstB), \ + (varamount), Dallp2(srcdstB)); \ + Deposit_dexponentmantissap1(srcdstA, \ + (Dexponentmantissap1(srcdstA)>>varamount)); \ + } } +/* varamount must be less than 64 */ +#define Dbl_leftshift(srcdstA, srcdstB, varamount) \ + {if((varamount) >= 32) { \ + Dallp1(srcdstA) = Dallp2(srcdstB) << (varamount-32); \ + Dallp2(srcdstB)=0; \ + } \ + else { \ + if ((varamount) > 0) { \ + Dallp1(srcdstA) = (Dallp1(srcdstA) << (varamount)) | \ + (Dallp2(srcdstB) >> (32-(varamount))); \ + Dallp2(srcdstB) <<= varamount; \ + } \ + } } +#define Dbl_leftshiftby1_withextent(lefta,leftb,right,resulta,resultb) \ + Shiftdouble(Dallp1(lefta), Dallp2(leftb), 31, Dallp1(resulta)); \ + Shiftdouble(Dallp2(leftb), Extall(right), 31, Dallp2(resultb)) + +#define Dbl_rightshiftby1_withextent(leftb,right,dst) \ + Extall(dst) = (Dallp2(leftb) << 31) | ((unsigned int)Extall(right) >> 1) | \ + Extlow(right) + +#define Dbl_arithrightshiftby1(srcdstA,srcdstB) \ + Shiftdouble(Dallp1(srcdstA),Dallp2(srcdstB),1,Dallp2(srcdstB));\ + Dallp1(srcdstA) = (int)Dallp1(srcdstA) >> 1 + +/* Sign extend the sign bit with an integer destination */ +#define Dbl_signextendedsign(value) Dsignedsign(value) + +#define Dbl_isone_hidden(dbl_value) (Is_dhidden(dbl_value)!=0) +/* Singles and doubles may include the sign and exponent fields. The + * hidden bit and the hidden overflow must be included. */ +#define Dbl_increment(dbl_valueA,dbl_valueB) \ + if( (Dallp2(dbl_valueB) += 1) == 0 ) Dallp1(dbl_valueA) += 1 +#define Dbl_increment_mantissa(dbl_valueA,dbl_valueB) \ + if( (Dmantissap2(dbl_valueB) += 1) == 0 ) \ + Deposit_dmantissap1(dbl_valueA,dbl_valueA+1) +#define Dbl_decrement(dbl_valueA,dbl_valueB) \ + if( Dallp2(dbl_valueB) == 0 ) Dallp1(dbl_valueA) -= 1; \ + Dallp2(dbl_valueB) -= 1 + +#define Dbl_isone_sign(dbl_value) (Is_dsign(dbl_value)!=0) +#define Dbl_isone_hiddenoverflow(dbl_value) (Is_dhiddenoverflow(dbl_value)!=0) +#define Dbl_isone_lowmantissap1(dbl_valueA) (Is_dlowp1(dbl_valueA)!=0) +#define Dbl_isone_lowmantissap2(dbl_valueB) (Is_dlowp2(dbl_valueB)!=0) +#define Dbl_isone_signaling(dbl_value) (Is_dsignaling(dbl_value)!=0) +#define Dbl_is_signalingnan(dbl_value) (Dsignalingnan(dbl_value)==0xfff) +#define Dbl_isnotzero(dbl_valueA,dbl_valueB) \ + (Dallp1(dbl_valueA) || Dallp2(dbl_valueB)) +#define Dbl_isnotzero_hiddenhigh7mantissa(dbl_value) \ + (Dhiddenhigh7mantissa(dbl_value)!=0) +#define Dbl_isnotzero_exponent(dbl_value) (Dexponent(dbl_value)!=0) +#define Dbl_isnotzero_mantissa(dbl_valueA,dbl_valueB) \ + (Dmantissap1(dbl_valueA) || Dmantissap2(dbl_valueB)) +#define Dbl_isnotzero_mantissap1(dbl_valueA) (Dmantissap1(dbl_valueA)!=0) +#define Dbl_isnotzero_mantissap2(dbl_valueB) (Dmantissap2(dbl_valueB)!=0) +#define Dbl_isnotzero_exponentmantissa(dbl_valueA,dbl_valueB) \ + (Dexponentmantissap1(dbl_valueA) || Dmantissap2(dbl_valueB)) +#define Dbl_isnotzero_low4p2(dbl_value) (Dlow4p2(dbl_value)!=0) +#define Dbl_iszero(dbl_valueA,dbl_valueB) (Dallp1(dbl_valueA)==0 && \ + Dallp2(dbl_valueB)==0) +#define Dbl_iszero_allp1(dbl_value) (Dallp1(dbl_value)==0) +#define Dbl_iszero_allp2(dbl_value) (Dallp2(dbl_value)==0) +#define Dbl_iszero_hidden(dbl_value) (Is_dhidden(dbl_value)==0) +#define Dbl_iszero_hiddenoverflow(dbl_value) (Is_dhiddenoverflow(dbl_value)==0) +#define Dbl_iszero_hiddenhigh3mantissa(dbl_value) \ + (Dhiddenhigh3mantissa(dbl_value)==0) +#define Dbl_iszero_hiddenhigh7mantissa(dbl_value) \ + (Dhiddenhigh7mantissa(dbl_value)==0) +#define Dbl_iszero_sign(dbl_value) (Is_dsign(dbl_value)==0) +#define Dbl_iszero_exponent(dbl_value) (Dexponent(dbl_value)==0) +#define Dbl_iszero_mantissa(dbl_valueA,dbl_valueB) \ + (Dmantissap1(dbl_valueA)==0 && Dmantissap2(dbl_valueB)==0) +#define Dbl_iszero_exponentmantissa(dbl_valueA,dbl_valueB) \ + (Dexponentmantissap1(dbl_valueA)==0 && Dmantissap2(dbl_valueB)==0) +#define Dbl_isinfinity_exponent(dbl_value) \ + (Dexponent(dbl_value)==DBL_INFINITY_EXPONENT) +#define Dbl_isnotinfinity_exponent(dbl_value) \ + (Dexponent(dbl_value)!=DBL_INFINITY_EXPONENT) +#define Dbl_isinfinity(dbl_valueA,dbl_valueB) \ + (Dexponent(dbl_valueA)==DBL_INFINITY_EXPONENT && \ + Dmantissap1(dbl_valueA)==0 && Dmantissap2(dbl_valueB)==0) +#define Dbl_isnan(dbl_valueA,dbl_valueB) \ + (Dexponent(dbl_valueA)==DBL_INFINITY_EXPONENT && \ + (Dmantissap1(dbl_valueA)!=0 || Dmantissap2(dbl_valueB)!=0)) +#define Dbl_isnotnan(dbl_valueA,dbl_valueB) \ + (Dexponent(dbl_valueA)!=DBL_INFINITY_EXPONENT || \ + (Dmantissap1(dbl_valueA)==0 && Dmantissap2(dbl_valueB)==0)) + +#define Dbl_islessthan(dbl_op1a,dbl_op1b,dbl_op2a,dbl_op2b) \ + (Dallp1(dbl_op1a) < Dallp1(dbl_op2a) || \ + (Dallp1(dbl_op1a) == Dallp1(dbl_op2a) && \ + Dallp2(dbl_op1b) < Dallp2(dbl_op2b))) +#define Dbl_isgreaterthan(dbl_op1a,dbl_op1b,dbl_op2a,dbl_op2b) \ + (Dallp1(dbl_op1a) > Dallp1(dbl_op2a) || \ + (Dallp1(dbl_op1a) == Dallp1(dbl_op2a) && \ + Dallp2(dbl_op1b) > Dallp2(dbl_op2b))) +#define Dbl_isnotlessthan(dbl_op1a,dbl_op1b,dbl_op2a,dbl_op2b) \ + (Dallp1(dbl_op1a) > Dallp1(dbl_op2a) || \ + (Dallp1(dbl_op1a) == Dallp1(dbl_op2a) && \ + Dallp2(dbl_op1b) >= Dallp2(dbl_op2b))) +#define Dbl_isnotgreaterthan(dbl_op1a,dbl_op1b,dbl_op2a,dbl_op2b) \ + (Dallp1(dbl_op1a) < Dallp1(dbl_op2a) || \ + (Dallp1(dbl_op1a) == Dallp1(dbl_op2a) && \ + Dallp2(dbl_op1b) <= Dallp2(dbl_op2b))) +#define Dbl_isequal(dbl_op1a,dbl_op1b,dbl_op2a,dbl_op2b) \ + ((Dallp1(dbl_op1a) == Dallp1(dbl_op2a)) && \ + (Dallp2(dbl_op1b) == Dallp2(dbl_op2b))) + +#define Dbl_leftshiftby8(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),24,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 8 +#define Dbl_leftshiftby7(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),25,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 7 +#define Dbl_leftshiftby4(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),28,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 4 +#define Dbl_leftshiftby3(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),29,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 3 +#define Dbl_leftshiftby2(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),30,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 2 +#define Dbl_leftshiftby1(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),31,Dallp1(dbl_valueA)); \ + Dallp2(dbl_valueB) <<= 1 + +#define Dbl_rightshiftby8(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),8,Dallp2(dbl_valueB)); \ + Dallp1(dbl_valueA) >>= 8 +#define Dbl_rightshiftby4(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),4,Dallp2(dbl_valueB)); \ + Dallp1(dbl_valueA) >>= 4 +#define Dbl_rightshiftby2(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),2,Dallp2(dbl_valueB)); \ + Dallp1(dbl_valueA) >>= 2 +#define Dbl_rightshiftby1(dbl_valueA,dbl_valueB) \ + Shiftdouble(Dallp1(dbl_valueA),Dallp2(dbl_valueB),1,Dallp2(dbl_valueB)); \ + Dallp1(dbl_valueA) >>= 1 + +/* This magnitude comparison uses the signless first words and + * the regular part2 words. The comparison is graphically: + * + * 1st greater? ------------- + * | + * 1st less?-----------------+--------- + * | | + * 2nd greater or equal----->| | + * False True + */ +#define Dbl_ismagnitudeless(leftB,rightB,signlessleft,signlessright) \ + ((signlessleft <= signlessright) && \ + ( (signlessleft < signlessright) || (Dallp2(leftB)<Dallp2(rightB)) )) + +#define Dbl_copytoint_exponentmantissap1(src,dest) \ + dest = Dexponentmantissap1(src) + +/* A quiet NaN has the high mantissa bit clear and at least on other (in this + * case the adjacent bit) bit set. */ +#define Dbl_set_quiet(dbl_value) Deposit_dhigh2mantissa(dbl_value,1) +#define Dbl_set_exponent(dbl_value, exp) Deposit_dexponent(dbl_value,exp) + +#define Dbl_set_mantissa(desta,destb,valuea,valueb) \ + Deposit_dmantissap1(desta,valuea); \ + Dmantissap2(destb) = Dmantissap2(valueb) +#define Dbl_set_mantissap1(desta,valuea) \ + Deposit_dmantissap1(desta,valuea) +#define Dbl_set_mantissap2(destb,valueb) \ + Dmantissap2(destb) = Dmantissap2(valueb) + +#define Dbl_set_exponentmantissa(desta,destb,valuea,valueb) \ + Deposit_dexponentmantissap1(desta,valuea); \ + Dmantissap2(destb) = Dmantissap2(valueb) +#define Dbl_set_exponentmantissap1(dest,value) \ + Deposit_dexponentmantissap1(dest,value) + +#define Dbl_copyfromptr(src,desta,destb) \ + Dallp1(desta) = src->wd0; \ + Dallp2(destb) = src->wd1 +#define Dbl_copytoptr(srca,srcb,dest) \ + dest->wd0 = Dallp1(srca); \ + dest->wd1 = Dallp2(srcb) + +/* An infinity is represented with the max exponent and a zero mantissa */ +#define Dbl_setinfinity_exponent(dbl_value) \ + Deposit_dexponent(dbl_value,DBL_INFINITY_EXPONENT) +#define Dbl_setinfinity_exponentmantissa(dbl_valueA,dbl_valueB) \ + Deposit_dexponentmantissap1(dbl_valueA, \ + (DBL_INFINITY_EXPONENT << (32-(1+DBL_EXP_LENGTH)))); \ + Dmantissap2(dbl_valueB) = 0 +#define Dbl_setinfinitypositive(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) \ + = (DBL_INFINITY_EXPONENT << (32-(1+DBL_EXP_LENGTH))); \ + Dmantissap2(dbl_valueB) = 0 +#define Dbl_setinfinitynegative(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) = ((unsigned int)1<<31) | \ + (DBL_INFINITY_EXPONENT << (32-(1+DBL_EXP_LENGTH))); \ + Dmantissap2(dbl_valueB) = 0 +#define Dbl_setinfinity(dbl_valueA,dbl_valueB,sign) \ + Dallp1(dbl_valueA) = ((unsigned int)sign << 31) | \ + (DBL_INFINITY_EXPONENT << (32-(1+DBL_EXP_LENGTH))); \ + Dmantissap2(dbl_valueB) = 0 + +#define Dbl_sethigh4bits(dbl_value, extsign) Deposit_dhigh4p1(dbl_value,extsign) +#define Dbl_set_sign(dbl_value,sign) Deposit_dsign(dbl_value,sign) +#define Dbl_invert_sign(dbl_value) Deposit_dsign(dbl_value,~Dsign(dbl_value)) +#define Dbl_setone_sign(dbl_value) Deposit_dsign(dbl_value,1) +#define Dbl_setone_lowmantissap2(dbl_value) Deposit_dlowp2(dbl_value,1) +#define Dbl_setzero_sign(dbl_value) Dallp1(dbl_value) &= 0x7fffffff +#define Dbl_setzero_exponent(dbl_value) \ + Dallp1(dbl_value) &= 0x800fffff +#define Dbl_setzero_mantissa(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) &= 0xfff00000; \ + Dallp2(dbl_valueB) = 0 +#define Dbl_setzero_mantissap1(dbl_value) Dallp1(dbl_value) &= 0xfff00000 +#define Dbl_setzero_mantissap2(dbl_value) Dallp2(dbl_value) = 0 +#define Dbl_setzero_exponentmantissa(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) &= 0x80000000; \ + Dallp2(dbl_valueB) = 0 +#define Dbl_setzero_exponentmantissap1(dbl_valueA) \ + Dallp1(dbl_valueA) &= 0x80000000 +#define Dbl_setzero(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) = 0; Dallp2(dbl_valueB) = 0 +#define Dbl_setzerop1(dbl_value) Dallp1(dbl_value) = 0 +#define Dbl_setzerop2(dbl_value) Dallp2(dbl_value) = 0 +#define Dbl_setnegativezero(dbl_value) \ + Dallp1(dbl_value) = (unsigned int)1 << 31; Dallp2(dbl_value) = 0 +#define Dbl_setnegativezerop1(dbl_value) Dallp1(dbl_value) = (unsigned int)1<<31 + +/* Use the following macro for both overflow & underflow conditions */ +#define ovfl - +#define unfl + +#define Dbl_setwrapped_exponent(dbl_value,exponent,op) \ + Deposit_dexponent(dbl_value,(exponent op DBL_WRAP)) + +#define Dbl_setlargestpositive(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) = ((DBL_EMAX+DBL_BIAS) << (32-(1+DBL_EXP_LENGTH))) \ + | ((1<<(32-(1+DBL_EXP_LENGTH))) - 1 ); \ + Dallp2(dbl_valueB) = 0xFFFFFFFF +#define Dbl_setlargestnegative(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) = ((DBL_EMAX+DBL_BIAS) << (32-(1+DBL_EXP_LENGTH))) \ + | ((1<<(32-(1+DBL_EXP_LENGTH))) - 1 ) \ + | ((unsigned int)1<<31); \ + Dallp2(dbl_valueB) = 0xFFFFFFFF +#define Dbl_setlargest_exponentmantissa(dbl_valueA,dbl_valueB) \ + Deposit_dexponentmantissap1(dbl_valueA, \ + (((DBL_EMAX+DBL_BIAS) << (32-(1+DBL_EXP_LENGTH))) \ + | ((1<<(32-(1+DBL_EXP_LENGTH))) - 1 ))); \ + Dallp2(dbl_valueB) = 0xFFFFFFFF + +#define Dbl_setnegativeinfinity(dbl_valueA,dbl_valueB) \ + Dallp1(dbl_valueA) = ((1<<DBL_EXP_LENGTH) | DBL_INFINITY_EXPONENT) \ + << (32-(1+DBL_EXP_LENGTH)) ; \ + Dallp2(dbl_valueB) = 0 +#define Dbl_setlargest(dbl_valueA,dbl_valueB,sign) \ + Dallp1(dbl_valueA) = ((unsigned int)sign << 31) | \ + ((DBL_EMAX+DBL_BIAS) << (32-(1+DBL_EXP_LENGTH))) | \ + ((1 << (32-(1+DBL_EXP_LENGTH))) - 1 ); \ + Dallp2(dbl_valueB) = 0xFFFFFFFF + + +/* The high bit is always zero so arithmetic or logical shifts will work. */ +#define Dbl_right_align(srcdstA,srcdstB,shift,extent) \ + if( shift >= 32 ) \ + { \ + /* Big shift requires examining the portion shift off \ + the end to properly set inexact. */ \ + if(shift < 64) \ + { \ + if(shift > 32) \ + { \ + Variable_shift_double(Dallp1(srcdstA),Dallp2(srcdstB), \ + shift-32, Extall(extent)); \ + if(Dallp2(srcdstB) << 64 - (shift)) Ext_setone_low(extent); \ + } \ + else Extall(extent) = Dallp2(srcdstB); \ + Dallp2(srcdstB) = Dallp1(srcdstA) >> (shift - 32); \ + } \ + else \ + { \ + Extall(extent) = Dallp1(srcdstA); \ + if(Dallp2(srcdstB)) Ext_setone_low(extent); \ + Dallp2(srcdstB) = 0; \ + } \ + Dallp1(srcdstA) = 0; \ + } \ + else \ + { \ + /* Small alignment is simpler. Extension is easily set. */ \ + if (shift > 0) \ + { \ + Extall(extent) = Dallp2(srcdstB) << 32 - (shift); \ + Variable_shift_double(Dallp1(srcdstA),Dallp2(srcdstB),shift, \ + Dallp2(srcdstB)); \ + Dallp1(srcdstA) >>= shift; \ + } \ + else Extall(extent) = 0; \ + } + +/* + * Here we need to shift the result right to correct for an overshift + * (due to the exponent becoming negative) during normalization. + */ +#define Dbl_fix_overshift(srcdstA,srcdstB,shift,extent) \ + Extall(extent) = Dallp2(srcdstB) << 32 - (shift); \ + Dallp2(srcdstB) = (Dallp1(srcdstA) << 32 - (shift)) | \ + (Dallp2(srcdstB) >> (shift)); \ + Dallp1(srcdstA) = Dallp1(srcdstA) >> shift + +#define Dbl_hiddenhigh3mantissa(dbl_value) Dhiddenhigh3mantissa(dbl_value) +#define Dbl_hidden(dbl_value) Dhidden(dbl_value) +#define Dbl_lowmantissap2(dbl_value) Dlowp2(dbl_value) + +/* The left argument is never smaller than the right argument */ +#define Dbl_subtract(lefta,leftb,righta,rightb,resulta,resultb) \ + if( Dallp2(rightb) > Dallp2(leftb) ) Dallp1(lefta)--; \ + Dallp2(resultb) = Dallp2(leftb) - Dallp2(rightb); \ + Dallp1(resulta) = Dallp1(lefta) - Dallp1(righta) + +/* Subtract right augmented with extension from left augmented with zeros and + * store into result and extension. */ +#define Dbl_subtract_withextension(lefta,leftb,righta,rightb,extent,resulta,resultb) \ + Dbl_subtract(lefta,leftb,righta,rightb,resulta,resultb); \ + if( (Extall(extent) = 0-Extall(extent)) ) \ + { \ + if((Dallp2(resultb)--) == 0) Dallp1(resulta)--; \ + } + +#define Dbl_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. */ \ + Dallp1(resulta) = Dallp1(lefta) + Dallp1(righta); \ + if((Dallp2(resultb) = Dallp2(leftb) + Dallp2(rightb)) < Dallp2(rightb)) \ + Dallp1(resulta)++ + +#define Dbl_xortointp1(left,right,result) \ + result = Dallp1(left) XOR Dallp1(right) + +#define Dbl_xorfromintp1(left,right,result) \ + Dallp1(result) = left XOR Dallp1(right) + +#define Dbl_swap_lower(left,right) \ + Dallp2(left) = Dallp2(left) XOR Dallp2(right); \ + Dallp2(right) = Dallp2(left) XOR Dallp2(right); \ + Dallp2(left) = Dallp2(left) XOR Dallp2(right) + +/* Need to Initialize */ +#define Dbl_makequietnan(desta,destb) \ + Dallp1(desta) = ((DBL_EMAX+DBL_BIAS)+1)<< (32-(1+DBL_EXP_LENGTH)) \ + | (1<<(32-(1+DBL_EXP_LENGTH+2))); \ + Dallp2(destb) = 0 +#define Dbl_makesignalingnan(desta,destb) \ + Dallp1(desta) = ((DBL_EMAX+DBL_BIAS)+1)<< (32-(1+DBL_EXP_LENGTH)) \ + | (1<<(32-(1+DBL_EXP_LENGTH+1))); \ + Dallp2(destb) = 0 + +#define Dbl_normalize(dbl_opndA,dbl_opndB,exponent) \ + while(Dbl_iszero_hiddenhigh7mantissa(dbl_opndA)) { \ + Dbl_leftshiftby8(dbl_opndA,dbl_opndB); \ + exponent -= 8; \ + } \ + if(Dbl_iszero_hiddenhigh3mantissa(dbl_opndA)) { \ + Dbl_leftshiftby4(dbl_opndA,dbl_opndB); \ + exponent -= 4; \ + } \ + while(Dbl_iszero_hidden(dbl_opndA)) { \ + Dbl_leftshiftby1(dbl_opndA,dbl_opndB); \ + exponent -= 1; \ + } + +#define Twoword_add(src1dstA,src1dstB,src2A,src2B) \ + /* \ + * want this macro to generate: \ + * ADD src1dstB,src2B,src1dstB; \ + * ADDC src1dstA,src2A,src1dstA; \ + */ \ + if ((src1dstB) + (src2B) < (src1dstB)) Dallp1(src1dstA)++; \ + Dallp1(src1dstA) += (src2A); \ + Dallp2(src1dstB) += (src2B) + +#define Twoword_subtract(src1dstA,src1dstB,src2A,src2B) \ + /* \ + * want this macro to generate: \ + * SUB src1dstB,src2B,src1dstB; \ + * SUBB src1dstA,src2A,src1dstA; \ + */ \ + if ((src1dstB) < (src2B)) Dallp1(src1dstA)--; \ + Dallp1(src1dstA) -= (src2A); \ + Dallp2(src1dstB) -= (src2B) + +#define Dbl_setoverflow(resultA,resultB) \ + /* set result to infinity or largest number */ \ + switch (Rounding_mode()) { \ + case ROUNDPLUS: \ + if (Dbl_isone_sign(resultA)) { \ + Dbl_setlargestnegative(resultA,resultB); \ + } \ + else { \ + Dbl_setinfinitypositive(resultA,resultB); \ + } \ + break; \ + case ROUNDMINUS: \ + if (Dbl_iszero_sign(resultA)) { \ + Dbl_setlargestpositive(resultA,resultB); \ + } \ + else { \ + Dbl_setinfinitynegative(resultA,resultB); \ + } \ + break; \ + case ROUNDNEAREST: \ + Dbl_setinfinity_exponentmantissa(resultA,resultB); \ + break; \ + case ROUNDZERO: \ + Dbl_setlargest_exponentmantissa(resultA,resultB); \ + } + +#define Dbl_denormalize(opndp1,opndp2,exponent,guard,sticky,inexact) \ + Dbl_clear_signexponent_set_hidden(opndp1); \ + if (exponent >= (1-DBL_P)) { \ + if (exponent >= -31) { \ + guard = (Dallp2(opndp2) >> -exponent) & 1; \ + if (exponent < 0) sticky |= Dallp2(opndp2) << (32+exponent); \ + if (exponent > -31) { \ + Variable_shift_double(opndp1,opndp2,1-exponent,opndp2); \ + Dallp1(opndp1) >>= 1-exponent; \ + } \ + else { \ + Dallp2(opndp2) = Dallp1(opndp1); \ + Dbl_setzerop1(opndp1); \ + } \ + } \ + else { \ + guard = (Dallp1(opndp1) >> -32-exponent) & 1; \ + if (exponent == -32) sticky |= Dallp2(opndp2); \ + else sticky |= (Dallp2(opndp2) | Dallp1(opndp1) << 64+exponent); \ + Dallp2(opndp2) = Dallp1(opndp1) >> -31-exponent; \ + Dbl_setzerop1(opndp1); \ + } \ + inexact = guard | sticky; \ + } \ + else { \ + guard = 0; \ + sticky |= (Dallp1(opndp1) | Dallp2(opndp2)); \ + Dbl_setzero(opndp1,opndp2); \ + inexact = sticky; \ + } + +/* + * The fused multiply add instructions requires a double extended format, + * with 106 bits of mantissa. + */ +#define DBLEXT_THRESHOLD 106 + +#define Dblext_setzero(valA,valB,valC,valD) \ + Dextallp1(valA) = 0; Dextallp2(valB) = 0; \ + Dextallp3(valC) = 0; Dextallp4(valD) = 0 + + +#define Dblext_isnotzero_mantissap3(valC) (Dextallp3(valC)!=0) +#define Dblext_isnotzero_mantissap4(valD) (Dextallp3(valD)!=0) +#define Dblext_isone_lowp2(val) (Dextlowp2(val)!=0) +#define Dblext_isone_highp3(val) (Dexthighp3(val)!=0) +#define Dblext_isnotzero_low31p3(val) (Dextlow31p3(val)!=0) +#define Dblext_iszero(valA,valB,valC,valD) (Dextallp1(valA)==0 && \ + Dextallp2(valB)==0 && Dextallp3(valC)==0 && Dextallp4(valD)==0) + +#define Dblext_copy(srca,srcb,srcc,srcd,desta,destb,destc,destd) \ + Dextallp1(desta) = Dextallp4(srca); \ + Dextallp2(destb) = Dextallp4(srcb); \ + Dextallp3(destc) = Dextallp4(srcc); \ + Dextallp4(destd) = Dextallp4(srcd) + +#define Dblext_swap_lower(leftp2,leftp3,leftp4,rightp2,rightp3,rightp4) \ + Dextallp2(leftp2) = Dextallp2(leftp2) XOR Dextallp2(rightp2); \ + Dextallp2(rightp2) = Dextallp2(leftp2) XOR Dextallp2(rightp2); \ + Dextallp2(leftp2) = Dextallp2(leftp2) XOR Dextallp2(rightp2); \ + Dextallp3(leftp3) = Dextallp3(leftp3) XOR Dextallp3(rightp3); \ + Dextallp3(rightp3) = Dextallp3(leftp3) XOR Dextallp3(rightp3); \ + Dextallp3(leftp3) = Dextallp3(leftp3) XOR Dextallp3(rightp3); \ + Dextallp4(leftp4) = Dextallp4(leftp4) XOR Dextallp4(rightp4); \ + Dextallp4(rightp4) = Dextallp4(leftp4) XOR Dextallp4(rightp4); \ + Dextallp4(leftp4) = Dextallp4(leftp4) XOR Dextallp4(rightp4) + +#define Dblext_setone_lowmantissap4(dbl_value) Deposit_dextlowp4(dbl_value,1) + +/* The high bit is always zero so arithmetic or logical shifts will work. */ +#define Dblext_right_align(srcdstA,srcdstB,srcdstC,srcdstD,shift) \ + {int shiftamt, sticky; \ + shiftamt = shift % 32; \ + sticky = 0; \ + switch (shift/32) { \ + case 0: if (shiftamt > 0) { \ + sticky = Dextallp4(srcdstD) << 32 - (shiftamt); \ + Variable_shift_double(Dextallp3(srcdstC), \ + Dextallp4(srcdstD),shiftamt,Dextallp4(srcdstD)); \ + Variable_shift_double(Dextallp2(srcdstB), \ + Dextallp3(srcdstC),shiftamt,Dextallp3(srcdstC)); \ + Variable_shift_double(Dextallp1(srcdstA), \ + Dextallp2(srcdstB),shiftamt,Dextallp2(srcdstB)); \ + Dextallp1(srcdstA) >>= shiftamt; \ + } \ + break; \ + case 1: if (shiftamt > 0) { \ + sticky = (Dextallp3(srcdstC) << 31 - shiftamt) | \ + Dextallp4(srcdstD); \ + Variable_shift_double(Dextallp2(srcdstB), \ + Dextallp3(srcdstC),shiftamt,Dextallp4(srcdstD)); \ + Variable_shift_double(Dextallp1(srcdstA), \ + Dextallp2(srcdstB),shiftamt,Dextallp3(srcdstC)); \ + } \ + else { \ + sticky = Dextallp4(srcdstD); \ + Dextallp4(srcdstD) = Dextallp3(srcdstC); \ + Dextallp3(srcdstC) = Dextallp2(srcdstB); \ + } \ + Dextallp2(srcdstB) = Dextallp1(srcdstA) >> shiftamt; \ + Dextallp1(srcdstA) = 0; \ + break; \ + case 2: if (shiftamt > 0) { \ + sticky = (Dextallp2(srcdstB) << 31 - shiftamt) | \ + Dextallp3(srcdstC) | Dextallp4(srcdstD); \ + Variable_shift_double(Dextallp1(srcdstA), \ + Dextallp2(srcdstB),shiftamt,Dextallp4(srcdstD)); \ + } \ + else { \ + sticky = Dextallp3(srcdstC) | Dextallp4(srcdstD); \ + Dextallp4(srcdstD) = Dextallp2(srcdstB); \ + } \ + Dextallp3(srcdstC) = Dextallp1(srcdstA) >> shiftamt; \ + Dextallp1(srcdstA) = Dextallp2(srcdstB) = 0; \ + break; \ + case 3: if (shiftamt > 0) { \ + sticky = (Dextallp1(srcdstA) << 31 - shiftamt) | \ + Dextallp2(srcdstB) | Dextallp3(srcdstC) | \ + Dextallp4(srcdstD); \ + } \ + else { \ + sticky = Dextallp2(srcdstB) | Dextallp3(srcdstC) | \ + Dextallp4(srcdstD); \ + } \ + Dextallp4(srcdstD) = Dextallp1(srcdstA) >> shiftamt; \ + Dextallp1(srcdstA) = Dextallp2(srcdstB) = 0; \ + Dextallp3(srcdstC) = 0; \ + break; \ + } \ + if (sticky) Dblext_setone_lowmantissap4(srcdstD); \ + } + +/* The left argument is never smaller than the right argument */ +#define Dblext_subtract(lefta,leftb,leftc,leftd,righta,rightb,rightc,rightd,resulta,resultb,resultc,resultd) \ + if( Dextallp4(rightd) > Dextallp4(leftd) ) \ + if( (Dextallp3(leftc)--) == 0) \ + if( (Dextallp2(leftb)--) == 0) Dextallp1(lefta)--; \ + Dextallp4(resultd) = Dextallp4(leftd) - Dextallp4(rightd); \ + if( Dextallp3(rightc) > Dextallp3(leftc) ) \ + if( (Dextallp2(leftb)--) == 0) Dextallp1(lefta)--; \ + Dextallp3(resultc) = Dextallp3(leftc) - Dextallp3(rightc); \ + if( Dextallp2(rightb) > Dextallp2(leftb) ) Dextallp1(lefta)--; \ + Dextallp2(resultb) = Dextallp2(leftb) - Dextallp2(rightb); \ + Dextallp1(resulta) = Dextallp1(lefta) - Dextallp1(righta) + +#define Dblext_addition(lefta,leftb,leftc,leftd,righta,rightb,rightc,rightd,resulta,resultb,resultc,resultd) \ + /* If the sum of the low words is less than either source, then \ + * an overflow into the next word occurred. */ \ + if ((Dextallp4(resultd) = Dextallp4(leftd)+Dextallp4(rightd)) < \ + Dextallp4(rightd)) \ + if((Dextallp3(resultc) = Dextallp3(leftc)+Dextallp3(rightc)+1) <= \ + Dextallp3(rightc)) \ + if((Dextallp2(resultb) = Dextallp2(leftb)+Dextallp2(rightb)+1) \ + <= Dextallp2(rightb)) \ + Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta)+1; \ + else Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta); \ + else \ + if ((Dextallp2(resultb) = Dextallp2(leftb)+Dextallp2(rightb)) < \ + Dextallp2(rightb)) \ + Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta)+1; \ + else Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta); \ + else \ + if ((Dextallp3(resultc) = Dextallp3(leftc)+Dextallp3(rightc)) < \ + Dextallp3(rightc)) \ + if ((Dextallp2(resultb) = Dextallp2(leftb)+Dextallp2(rightb)+1) \ + <= Dextallp2(rightb)) \ + Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta)+1; \ + else Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta); \ + else \ + if ((Dextallp2(resultb) = Dextallp2(leftb)+Dextallp2(rightb)) < \ + Dextallp2(rightb)) \ + Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta)+1; \ + else Dextallp1(resulta) = Dextallp1(lefta)+Dextallp1(righta) + + +#define Dblext_arithrightshiftby1(srcdstA,srcdstB,srcdstC,srcdstD) \ + Shiftdouble(Dextallp3(srcdstC),Dextallp4(srcdstD),1,Dextallp4(srcdstD)); \ + Shiftdouble(Dextallp2(srcdstB),Dextallp3(srcdstC),1,Dextallp3(srcdstC)); \ + Shiftdouble(Dextallp1(srcdstA),Dextallp2(srcdstB),1,Dextallp2(srcdstB)); \ + Dextallp1(srcdstA) = (int)Dextallp1(srcdstA) >> 1 + +#define Dblext_leftshiftby8(valA,valB,valC,valD) \ + Shiftdouble(Dextallp1(valA),Dextallp2(valB),24,Dextallp1(valA)); \ + Shiftdouble(Dextallp2(valB),Dextallp3(valC),24,Dextallp2(valB)); \ + Shiftdouble(Dextallp3(valC),Dextallp4(valD),24,Dextallp3(valC)); \ + Dextallp4(valD) <<= 8 +#define Dblext_leftshiftby4(valA,valB,valC,valD) \ + Shiftdouble(Dextallp1(valA),Dextallp2(valB),28,Dextallp1(valA)); \ + Shiftdouble(Dextallp2(valB),Dextallp3(valC),28,Dextallp2(valB)); \ + Shiftdouble(Dextallp3(valC),Dextallp4(valD),28,Dextallp3(valC)); \ + Dextallp4(valD) <<= 4 +#define Dblext_leftshiftby3(valA,valB,valC,valD) \ + Shiftdouble(Dextallp1(valA),Dextallp2(valB),29,Dextallp1(valA)); \ + Shiftdouble(Dextallp2(valB),Dextallp3(valC),29,Dextallp2(valB)); \ + Shiftdouble(Dextallp3(valC),Dextallp4(valD),29,Dextallp3(valC)); \ + Dextallp4(valD) <<= 3 +#define Dblext_leftshiftby2(valA,valB,valC,valD) \ + Shiftdouble(Dextallp1(valA),Dextallp2(valB),30,Dextallp1(valA)); \ + Shiftdouble(Dextallp2(valB),Dextallp3(valC),30,Dextallp2(valB)); \ + Shiftdouble(Dextallp3(valC),Dextallp4(valD),30,Dextallp3(valC)); \ + Dextallp4(valD) <<= 2 +#define Dblext_leftshiftby1(valA,valB,valC,valD) \ + Shiftdouble(Dextallp1(valA),Dextallp2(valB),31,Dextallp1(valA)); \ + Shiftdouble(Dextallp2(valB),Dextallp3(valC),31,Dextallp2(valB)); \ + Shiftdouble(Dextallp3(valC),Dextallp4(valD),31,Dextallp3(valC)); \ + Dextallp4(valD) <<= 1 + +#define Dblext_rightshiftby4(valueA,valueB,valueC,valueD) \ + Shiftdouble(Dextallp3(valueC),Dextallp4(valueD),4,Dextallp4(valueD)); \ + Shiftdouble(Dextallp2(valueB),Dextallp3(valueC),4,Dextallp3(valueC)); \ + Shiftdouble(Dextallp1(valueA),Dextallp2(valueB),4,Dextallp2(valueB)); \ + Dextallp1(valueA) >>= 4 +#define Dblext_rightshiftby1(valueA,valueB,valueC,valueD) \ + Shiftdouble(Dextallp3(valueC),Dextallp4(valueD),1,Dextallp4(valueD)); \ + Shiftdouble(Dextallp2(valueB),Dextallp3(valueC),1,Dextallp3(valueC)); \ + Shiftdouble(Dextallp1(valueA),Dextallp2(valueB),1,Dextallp2(valueB)); \ + Dextallp1(valueA) >>= 1 + +#define Dblext_xortointp1(left,right,result) Dbl_xortointp1(left,right,result) + +#define Dblext_xorfromintp1(left,right,result) \ + Dbl_xorfromintp1(left,right,result) + +#define Dblext_copytoint_exponentmantissap1(src,dest) \ + Dbl_copytoint_exponentmantissap1(src,dest) + +#define Dblext_ismagnitudeless(leftB,rightB,signlessleft,signlessright) \ + Dbl_ismagnitudeless(leftB,rightB,signlessleft,signlessright) + +#define Dbl_copyto_dblext(src1,src2,dest1,dest2,dest3,dest4) \ + Dextallp1(dest1) = Dallp1(src1); Dextallp2(dest2) = Dallp2(src2); \ + Dextallp3(dest3) = 0; Dextallp4(dest4) = 0 + +#define Dblext_set_sign(dbl_value,sign) Dbl_set_sign(dbl_value,sign) +#define Dblext_clear_signexponent_set_hidden(srcdst) \ + Dbl_clear_signexponent_set_hidden(srcdst) +#define Dblext_clear_signexponent(srcdst) Dbl_clear_signexponent(srcdst) +#define Dblext_clear_sign(srcdst) Dbl_clear_sign(srcdst) +#define Dblext_isone_hidden(dbl_value) Dbl_isone_hidden(dbl_value) + +/* + * The Fourword_add() macro assumes that integers are 4 bytes in size. + * It will break if this is not the case. + */ + +#define Fourword_add(src1dstA,src1dstB,src1dstC,src1dstD,src2A,src2B,src2C,src2D) \ + /* \ + * want this macro to generate: \ + * ADD src1dstD,src2D,src1dstD; \ + * ADDC src1dstC,src2C,src1dstC; \ + * ADDC src1dstB,src2B,src1dstB; \ + * ADDC src1dstA,src2A,src1dstA; \ + */ \ + if ((unsigned int)(src1dstD += (src2D)) < (unsigned int)(src2D)) { \ + if ((unsigned int)(src1dstC += (src2C) + 1) <= \ + (unsigned int)(src2C)) { \ + if ((unsigned int)(src1dstB += (src2B) + 1) <= \ + (unsigned int)(src2B)) src1dstA++; \ + } \ + else if ((unsigned int)(src1dstB += (src2B)) < \ + (unsigned int)(src2B)) src1dstA++; \ + } \ + else { \ + if ((unsigned int)(src1dstC += (src2C)) < \ + (unsigned int)(src2C)) { \ + if ((unsigned int)(src1dstB += (src2B) + 1) <= \ + (unsigned int)(src2B)) src1dstA++; \ + } \ + else if ((unsigned int)(src1dstB += (src2B)) < \ + (unsigned int)(src2B)) src1dstA++; \ + } \ + src1dstA += (src2A) + +#define Dblext_denormalize(opndp1,opndp2,opndp3,opndp4,exponent,is_tiny) \ + {int shiftamt, sticky; \ + is_tiny = TRUE; \ + if (exponent == 0 && (Dextallp3(opndp3) || Dextallp4(opndp4))) { \ + switch (Rounding_mode()) { \ + case ROUNDPLUS: \ + if (Dbl_iszero_sign(opndp1)) { \ + Dbl_increment(opndp1,opndp2); \ + if (Dbl_isone_hiddenoverflow(opndp1)) \ + is_tiny = FALSE; \ + Dbl_decrement(opndp1,opndp2); \ + } \ + break; \ + case ROUNDMINUS: \ + if (Dbl_isone_sign(opndp1)) { \ + Dbl_increment(opndp1,opndp2); \ + if (Dbl_isone_hiddenoverflow(opndp1)) \ + is_tiny = FALSE; \ + Dbl_decrement(opndp1,opndp2); \ + } \ + break; \ + case ROUNDNEAREST: \ + if (Dblext_isone_highp3(opndp3) && \ + (Dblext_isone_lowp2(opndp2) || \ + Dblext_isnotzero_low31p3(opndp3))) { \ + Dbl_increment(opndp1,opndp2); \ + if (Dbl_isone_hiddenoverflow(opndp1)) \ + is_tiny = FALSE; \ + Dbl_decrement(opndp1,opndp2); \ + } \ + break; \ + } \ + } \ + Dblext_clear_signexponent_set_hidden(opndp1); \ + if (exponent >= (1-QUAD_P)) { \ + shiftamt = (1-exponent) % 32; \ + switch((1-exponent)/32) { \ + case 0: sticky = Dextallp4(opndp4) << 32-(shiftamt); \ + Variableshiftdouble(opndp3,opndp4,shiftamt,opndp4); \ + Variableshiftdouble(opndp2,opndp3,shiftamt,opndp3); \ + Variableshiftdouble(opndp1,opndp2,shiftamt,opndp2); \ + Dextallp1(opndp1) >>= shiftamt; \ + break; \ + case 1: sticky = (Dextallp3(opndp3) << 32-(shiftamt)) | \ + Dextallp4(opndp4); \ + Variableshiftdouble(opndp2,opndp3,shiftamt,opndp4); \ + Variableshiftdouble(opndp1,opndp2,shiftamt,opndp3); \ + Dextallp2(opndp2) = Dextallp1(opndp1) >> shiftamt; \ + Dextallp1(opndp1) = 0; \ + break; \ + case 2: sticky = (Dextallp2(opndp2) << 32-(shiftamt)) | \ + Dextallp3(opndp3) | Dextallp4(opndp4); \ + Variableshiftdouble(opndp1,opndp2,shiftamt,opndp4); \ + Dextallp3(opndp3) = Dextallp1(opndp1) >> shiftamt; \ + Dextallp1(opndp1) = Dextallp2(opndp2) = 0; \ + break; \ + case 3: sticky = (Dextallp1(opndp1) << 32-(shiftamt)) | \ + Dextallp2(opndp2) | Dextallp3(opndp3) | \ + Dextallp4(opndp4); \ + Dextallp4(opndp4) = Dextallp1(opndp1) >> shiftamt; \ + Dextallp1(opndp1) = Dextallp2(opndp2) = 0; \ + Dextallp3(opndp3) = 0; \ + break; \ + } \ + } \ + else { \ + sticky = Dextallp1(opndp1) | Dextallp2(opndp2) | \ + Dextallp3(opndp3) | Dextallp4(opndp4); \ + Dblext_setzero(opndp1,opndp2,opndp3,opndp4); \ + } \ + if (sticky) Dblext_setone_lowmantissap4(opndp4); \ + exponent = 0; \ + } |