| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Matthew Wilcox | 1286 | 99.69% | 1 | 33.33% |
| Simon Arlott | 2 | 0.16% | 1 | 33.33% |
| Thomas Gleixner | 2 | 0.16% | 1 | 33.33% |
| Total | 1290 | 3 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Linux/PA-RISC Project (http://www.parisc-linux.org/) * * Floating-point emulation code * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> */ #ifdef __NO_PA_HDRS PA header file -- do not include this header file for non-PA builds. #endif /* 32-bit word grabbing 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; \ }
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