diff options
author | RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
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committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/libdecnumber/dpd/decimal32.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/libdecnumber/dpd/decimal32.c')
-rw-r--r-- | qemu/libdecnumber/dpd/decimal32.c | 488 |
1 files changed, 0 insertions, 488 deletions
diff --git a/qemu/libdecnumber/dpd/decimal32.c b/qemu/libdecnumber/dpd/decimal32.c deleted file mode 100644 index 53f29789d..000000000 --- a/qemu/libdecnumber/dpd/decimal32.c +++ /dev/null @@ -1,488 +0,0 @@ -/* Decimal 32-bit format module for the decNumber C Library. - Copyright (C) 2005, 2007 Free Software Foundation, Inc. - Contributed by IBM Corporation. Author Mike Cowlishaw. - - This file is part of GCC. - - GCC 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. - - In addition to the permissions in the GNU General Public License, - the Free Software Foundation gives you unlimited permission to link - the compiled version of this file into combinations with other - programs, and to distribute those combinations without any - restriction coming from the use of this file. (The General Public - License restrictions do apply in other respects; for example, they - cover modification of the file, and distribution when not linked - into a combine executable.) - - GCC 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 GCC; see the file COPYING. If not, write to the Free - Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301, USA. */ - -/* ------------------------------------------------------------------ */ -/* Decimal 32-bit format module */ -/* ------------------------------------------------------------------ */ -/* This module comprises the routines for decimal32 format numbers. */ -/* Conversions are supplied to and from decNumber and String. */ -/* */ -/* This is used when decNumber provides operations, either for all */ -/* operations or as a proxy between decNumber and decSingle. */ -/* */ -/* Error handling is the same as decNumber (qv.). */ -/* ------------------------------------------------------------------ */ -#include "qemu/osdep.h" - -#include "libdecnumber/dconfig.h" -#define DECNUMDIGITS 7 /* make decNumbers with space for 7 */ -#include "libdecnumber/decNumber.h" -#include "libdecnumber/decNumberLocal.h" -#include "libdecnumber/dpd/decimal32.h" - -/* Utility tables and routines [in decimal64.c] */ -extern const uInt COMBEXP[32], COMBMSD[32]; -extern const uByte BIN2CHAR[4001]; - -extern void decDigitsToDPD(const decNumber *, uInt *, Int); -extern void decDigitsFromDPD(decNumber *, const uInt *, Int); - -#if DECTRACE || DECCHECK -void decimal32Show(const decimal32 *); /* for debug */ -extern void decNumberShow(const decNumber *); /* .. */ -#endif - -/* Useful macro */ -/* Clear a structure (e.g., a decNumber) */ -#define DEC_clear(d) memset(d, 0, sizeof(*d)) - -/* ------------------------------------------------------------------ */ -/* decimal32FromNumber -- convert decNumber to decimal32 */ -/* */ -/* ds is the target decimal32 */ -/* dn is the source number (assumed valid) */ -/* set is the context, used only for reporting errors */ -/* */ -/* The set argument is used only for status reporting and for the */ -/* rounding mode (used if the coefficient is more than DECIMAL32_Pmax */ -/* digits or an overflow is detected). If the exponent is out of the */ -/* valid range then Overflow or Underflow will be raised. */ -/* After Underflow a subnormal result is possible. */ -/* */ -/* DEC_Clamped is set if the number has to be 'folded down' to fit, */ -/* by reducing its exponent and multiplying the coefficient by a */ -/* power of ten, or if the exponent on a zero had to be clamped. */ -/* ------------------------------------------------------------------ */ -decimal32 * decimal32FromNumber(decimal32 *d32, const decNumber *dn, - decContext *set) { - uInt status=0; /* status accumulator */ - Int ae; /* adjusted exponent */ - decNumber dw; /* work */ - decContext dc; /* .. */ - uInt *pu; /* .. */ - uInt comb, exp; /* .. */ - uInt targ=0; /* target 32-bit */ - - /* If the number has too many digits, or the exponent could be */ - /* out of range then reduce the number under the appropriate */ - /* constraints. This could push the number to Infinity or zero, */ - /* so this check and rounding must be done before generating the */ - /* decimal32] */ - ae=dn->exponent+dn->digits-1; /* [0 if special] */ - if (dn->digits>DECIMAL32_Pmax /* too many digits */ - || ae>DECIMAL32_Emax /* likely overflow */ - || ae<DECIMAL32_Emin) { /* likely underflow */ - decContextDefault(&dc, DEC_INIT_DECIMAL32); /* [no traps] */ - dc.round=set->round; /* use supplied rounding */ - decNumberPlus(&dw, dn, &dc); /* (round and check) */ - /* [this changes -0 to 0, so enforce the sign...] */ - dw.bits|=dn->bits&DECNEG; - status=dc.status; /* save status */ - dn=&dw; /* use the work number */ - } /* maybe out of range */ - - if (dn->bits&DECSPECIAL) { /* a special value */ - if (dn->bits&DECINF) targ=DECIMAL_Inf<<24; - else { /* sNaN or qNaN */ - if ((*dn->lsu!=0 || dn->digits>1) /* non-zero coefficient */ - && (dn->digits<DECIMAL32_Pmax)) { /* coefficient fits */ - decDigitsToDPD(dn, &targ, 0); - } - if (dn->bits&DECNAN) targ|=DECIMAL_NaN<<24; - else targ|=DECIMAL_sNaN<<24; - } /* a NaN */ - } /* special */ - - else { /* is finite */ - if (decNumberIsZero(dn)) { /* is a zero */ - /* set and clamp exponent */ - if (dn->exponent<-DECIMAL32_Bias) { - exp=0; /* low clamp */ - status|=DEC_Clamped; - } - else { - exp=dn->exponent+DECIMAL32_Bias; /* bias exponent */ - if (exp>DECIMAL32_Ehigh) { /* top clamp */ - exp=DECIMAL32_Ehigh; - status|=DEC_Clamped; - } - } - comb=(exp>>3) & 0x18; /* msd=0, exp top 2 bits .. */ - } - else { /* non-zero finite number */ - uInt msd; /* work */ - Int pad=0; /* coefficient pad digits */ - - /* the dn is known to fit, but it may need to be padded */ - exp=(uInt)(dn->exponent+DECIMAL32_Bias); /* bias exponent */ - if (exp>DECIMAL32_Ehigh) { /* fold-down case */ - pad=exp-DECIMAL32_Ehigh; - exp=DECIMAL32_Ehigh; /* [to maximum] */ - status|=DEC_Clamped; - } - - /* fastpath common case */ - if (DECDPUN==3 && pad==0) { - targ=BIN2DPD[dn->lsu[0]]; - if (dn->digits>3) targ|=(uInt)(BIN2DPD[dn->lsu[1]])<<10; - msd=(dn->digits==7 ? dn->lsu[2] : 0); - } - else { /* general case */ - decDigitsToDPD(dn, &targ, pad); - /* save and clear the top digit */ - msd=targ>>20; - targ&=0x000fffff; - } - - /* create the combination field */ - if (msd>=8) comb=0x18 | ((exp>>5) & 0x06) | (msd & 0x01); - else comb=((exp>>3) & 0x18) | msd; - } - targ|=comb<<26; /* add combination field .. */ - targ|=(exp&0x3f)<<20; /* .. and exponent continuation */ - } /* finite */ - - if (dn->bits&DECNEG) targ|=0x80000000; /* add sign bit */ - - /* now write to storage; this is endian */ - pu=(uInt *)d32->bytes; /* overlay */ - *pu=targ; /* directly store the int */ - - if (status!=0) decContextSetStatus(set, status); /* pass on status */ - /* decimal32Show(d32); */ - return d32; - } /* decimal32FromNumber */ - -/* ------------------------------------------------------------------ */ -/* decimal32ToNumber -- convert decimal32 to decNumber */ -/* d32 is the source decimal32 */ -/* dn is the target number, with appropriate space */ -/* No error is possible. */ -/* ------------------------------------------------------------------ */ -decNumber * decimal32ToNumber(const decimal32 *d32, decNumber *dn) { - uInt msd; /* coefficient MSD */ - uInt exp; /* exponent top two bits */ - uInt comb; /* combination field */ - uInt sour; /* source 32-bit */ - const uInt *pu; /* work */ - - /* load source from storage; this is endian */ - pu=(const uInt *)d32->bytes; /* overlay */ - sour=*pu; /* directly load the int */ - - comb=(sour>>26)&0x1f; /* combination field */ - - decNumberZero(dn); /* clean number */ - if (sour&0x80000000) dn->bits=DECNEG; /* set sign if negative */ - - msd=COMBMSD[comb]; /* decode the combination field */ - exp=COMBEXP[comb]; /* .. */ - - if (exp==3) { /* is a special */ - if (msd==0) { - dn->bits|=DECINF; - return dn; /* no coefficient needed */ - } - else if (sour&0x02000000) dn->bits|=DECSNAN; - else dn->bits|=DECNAN; - msd=0; /* no top digit */ - } - else { /* is a finite number */ - dn->exponent=(exp<<6)+((sour>>20)&0x3f)-DECIMAL32_Bias; /* unbiased */ - } - - /* get the coefficient */ - sour&=0x000fffff; /* clean coefficient continuation */ - if (msd) { /* non-zero msd */ - sour|=msd<<20; /* prefix to coefficient */ - decDigitsFromDPD(dn, &sour, 3); /* process 3 declets */ - return dn; - } - /* msd=0 */ - if (!sour) return dn; /* easy: coefficient is 0 */ - if (sour&0x000ffc00) /* need 2 declets? */ - decDigitsFromDPD(dn, &sour, 2); /* process 2 declets */ - else - decDigitsFromDPD(dn, &sour, 1); /* process 1 declet */ - return dn; - } /* decimal32ToNumber */ - -/* ------------------------------------------------------------------ */ -/* to-scientific-string -- conversion to numeric string */ -/* to-engineering-string -- conversion to numeric string */ -/* */ -/* decimal32ToString(d32, string); */ -/* decimal32ToEngString(d32, string); */ -/* */ -/* d32 is the decimal32 format number to convert */ -/* string is the string where the result will be laid out */ -/* */ -/* string must be at least 24 characters */ -/* */ -/* No error is possible, and no status can be set. */ -/* ------------------------------------------------------------------ */ -char * decimal32ToEngString(const decimal32 *d32, char *string){ - decNumber dn; /* work */ - decimal32ToNumber(d32, &dn); - decNumberToEngString(&dn, string); - return string; - } /* decimal32ToEngString */ - -char * decimal32ToString(const decimal32 *d32, char *string){ - uInt msd; /* coefficient MSD */ - Int exp; /* exponent top two bits or full */ - uInt comb; /* combination field */ - char *cstart; /* coefficient start */ - char *c; /* output pointer in string */ - const uInt *pu; /* work */ - const uByte *u; /* .. */ - char *s, *t; /* .. (source, target) */ - Int dpd; /* .. */ - Int pre, e; /* .. */ - uInt sour; /* source 32-bit */ - - /* load source from storage; this is endian */ - pu=(const uInt *)d32->bytes; /* overlay */ - sour=*pu; /* directly load the int */ - - c=string; /* where result will go */ - if (((Int)sour)<0) *c++='-'; /* handle sign */ - - comb=(sour>>26)&0x1f; /* combination field */ - msd=COMBMSD[comb]; /* decode the combination field */ - exp=COMBEXP[comb]; /* .. */ - - if (exp==3) { - if (msd==0) { /* infinity */ - strcpy(c, "Inf"); - strcpy(c+3, "inity"); - return string; /* easy */ - } - if (sour&0x02000000) *c++='s'; /* sNaN */ - strcpy(c, "NaN"); /* complete word */ - c+=3; /* step past */ - if ((sour&0x000fffff)==0) return string; /* zero payload */ - /* otherwise drop through to add integer; set correct exp */ - exp=0; msd=0; /* setup for following code */ - } - else exp=(exp<<6)+((sour>>20)&0x3f)-DECIMAL32_Bias; /* unbiased */ - - /* convert 7 digits of significand to characters */ - cstart=c; /* save start of coefficient */ - if (msd) *c++='0'+(char)msd; /* non-zero most significant digit */ - - /* Now decode the declets. After extracting each one, it is */ - /* decoded to binary and then to a 4-char sequence by table lookup; */ - /* the 4-chars are a 1-char length (significant digits, except 000 */ - /* has length 0). This allows us to left-align the first declet */ - /* with non-zero content, then remaining ones are full 3-char */ - /* length. We use fixed-length memcpys because variable-length */ - /* causes a subroutine call in GCC. (These are length 4 for speed */ - /* and are safe because the array has an extra terminator byte.) */ - #define dpd2char u=&BIN2CHAR[DPD2BIN[dpd]*4]; \ - if (c!=cstart) {memcpy(c, u+1, 4); c+=3;} \ - else if (*u) {memcpy(c, u+4-*u, 4); c+=*u;} - - dpd=(sour>>10)&0x3ff; /* declet 1 */ - dpd2char; - dpd=(sour)&0x3ff; /* declet 2 */ - dpd2char; - - if (c==cstart) *c++='0'; /* all zeros -- make 0 */ - - if (exp==0) { /* integer or NaN case -- easy */ - *c='\0'; /* terminate */ - return string; - } - - /* non-0 exponent */ - e=0; /* assume no E */ - pre=c-cstart+exp; - /* [here, pre-exp is the digits count (==1 for zero)] */ - if (exp>0 || pre<-5) { /* need exponential form */ - e=pre-1; /* calculate E value */ - pre=1; /* assume one digit before '.' */ - } /* exponential form */ - - /* modify the coefficient, adding 0s, '.', and E+nn as needed */ - s=c-1; /* source (LSD) */ - if (pre>0) { /* ddd.ddd (plain), perhaps with E */ - char *dotat=cstart+pre; - if (dotat<c) { /* if embedded dot needed... */ - t=c; /* target */ - for (; s>=dotat; s--, t--) *t=*s; /* open the gap; leave t at gap */ - *t='.'; /* insert the dot */ - c++; /* length increased by one */ - } - - /* finally add the E-part, if needed; it will never be 0, and has */ - /* a maximum length of 3 digits (E-101 case) */ - if (e!=0) { - *c++='E'; /* starts with E */ - *c++='+'; /* assume positive */ - if (e<0) { - *(c-1)='-'; /* oops, need '-' */ - e=-e; /* uInt, please */ - } - u=&BIN2CHAR[e*4]; /* -> length byte */ - memcpy(c, u+4-*u, 4); /* copy fixed 4 characters [is safe] */ - c+=*u; /* bump pointer appropriately */ - } - *c='\0'; /* add terminator */ - /*printf("res %s\n", string); */ - return string; - } /* pre>0 */ - - /* -5<=pre<=0: here for plain 0.ddd or 0.000ddd forms (can never have E) */ - t=c+1-pre; - *(t+1)='\0'; /* can add terminator now */ - for (; s>=cstart; s--, t--) *t=*s; /* shift whole coefficient right */ - c=cstart; - *c++='0'; /* always starts with 0. */ - *c++='.'; - for (; pre<0; pre++) *c++='0'; /* add any 0's after '.' */ - /*printf("res %s\n", string); */ - return string; - } /* decimal32ToString */ - -/* ------------------------------------------------------------------ */ -/* to-number -- conversion from numeric string */ -/* */ -/* decimal32FromString(result, string, set); */ -/* */ -/* result is the decimal32 format number which gets the result of */ -/* the conversion */ -/* *string is the character string which should contain a valid */ -/* number (which may be a special value) */ -/* set is the context */ -/* */ -/* The context is supplied to this routine is used for error handling */ -/* (setting of status and traps) and for the rounding mode, only. */ -/* If an error occurs, the result will be a valid decimal32 NaN. */ -/* ------------------------------------------------------------------ */ -decimal32 * decimal32FromString(decimal32 *result, const char *string, - decContext *set) { - decContext dc; /* work */ - decNumber dn; /* .. */ - - decContextDefault(&dc, DEC_INIT_DECIMAL32); /* no traps, please */ - dc.round=set->round; /* use supplied rounding */ - - decNumberFromString(&dn, string, &dc); /* will round if needed */ - decimal32FromNumber(result, &dn, &dc); - if (dc.status!=0) { /* something happened */ - decContextSetStatus(set, dc.status); /* .. pass it on */ - } - return result; - } /* decimal32FromString */ - -/* ------------------------------------------------------------------ */ -/* decimal32IsCanonical -- test whether encoding is canonical */ -/* d32 is the source decimal32 */ -/* returns 1 if the encoding of d32 is canonical, 0 otherwise */ -/* No error is possible. */ -/* ------------------------------------------------------------------ */ -uint32_t decimal32IsCanonical(const decimal32 *d32) { - decNumber dn; /* work */ - decimal32 canon; /* .. */ - decContext dc; /* .. */ - decContextDefault(&dc, DEC_INIT_DECIMAL32); - decimal32ToNumber(d32, &dn); - decimal32FromNumber(&canon, &dn, &dc);/* canon will now be canonical */ - return memcmp(d32, &canon, DECIMAL32_Bytes)==0; - } /* decimal32IsCanonical */ - -/* ------------------------------------------------------------------ */ -/* decimal32Canonical -- copy an encoding, ensuring it is canonical */ -/* d32 is the source decimal32 */ -/* result is the target (may be the same decimal32) */ -/* returns result */ -/* No error is possible. */ -/* ------------------------------------------------------------------ */ -decimal32 * decimal32Canonical(decimal32 *result, const decimal32 *d32) { - decNumber dn; /* work */ - decContext dc; /* .. */ - decContextDefault(&dc, DEC_INIT_DECIMAL32); - decimal32ToNumber(d32, &dn); - decimal32FromNumber(result, &dn, &dc);/* result will now be canonical */ - return result; - } /* decimal32Canonical */ - -#if DECTRACE || DECCHECK -/* Macros for accessing decimal32 fields. These assume the argument - is a reference (pointer) to the decimal32 structure, and the - decimal32 is in network byte order (big-endian) */ -/* Get sign */ -#define decimal32Sign(d) ((unsigned)(d)->bytes[0]>>7) - -/* Get combination field */ -#define decimal32Comb(d) (((d)->bytes[0] & 0x7c)>>2) - -/* Get exponent continuation [does not remove bias] */ -#define decimal32ExpCon(d) ((((d)->bytes[0] & 0x03)<<4) \ - | ((unsigned)(d)->bytes[1]>>4)) - -/* Set sign [this assumes sign previously 0] */ -#define decimal32SetSign(d, b) { \ - (d)->bytes[0]|=((unsigned)(b)<<7);} - -/* Set exponent continuation [does not apply bias] */ -/* This assumes range has been checked and exponent previously 0; */ -/* type of exponent must be unsigned */ -#define decimal32SetExpCon(d, e) { \ - (d)->bytes[0]|=(uint8_t)((e)>>4); \ - (d)->bytes[1]|=(uint8_t)(((e)&0x0F)<<4);} - -/* ------------------------------------------------------------------ */ -/* decimal32Show -- display a decimal32 in hexadecimal [debug aid] */ -/* d32 -- the number to show */ -/* ------------------------------------------------------------------ */ -/* Also shows sign/cob/expconfields extracted - valid bigendian only */ -void decimal32Show(const decimal32 *d32) { - char buf[DECIMAL32_Bytes*2+1]; - Int i, j=0; - - if (DECLITEND) { - for (i=0; i<DECIMAL32_Bytes; i++, j+=2) { - sprintf(&buf[j], "%02x", d32->bytes[3-i]); - } - printf(" D32> %s [S:%d Cb:%02x Ec:%02x] LittleEndian\n", buf, - d32->bytes[3]>>7, (d32->bytes[3]>>2)&0x1f, - ((d32->bytes[3]&0x3)<<4)| (d32->bytes[2]>>4)); - } - else { - for (i=0; i<DECIMAL32_Bytes; i++, j+=2) { - sprintf(&buf[j], "%02x", d32->bytes[i]); - } - printf(" D32> %s [S:%d Cb:%02x Ec:%02x] BigEndian\n", buf, - decimal32Sign(d32), decimal32Comb(d32), decimal32ExpCon(d32)); - } - } /* decimal32Show */ -#endif |