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Diff for /src/lib/libc/gdtoa/gdtoaimp.h between version 1.8 and 1.9

version 1.8, 2011/01/21 23:36:49 version 1.9, 2011/03/20 23:15:35
Line 96  THIS SOFTWARE.
Line 96  THIS SOFTWARE.
  * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines   * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
  *      that use extended-precision instructions to compute rounded   *      that use extended-precision instructions to compute rounded
  *      products and quotients) with IBM.   *      products and quotients) with IBM.
  * #define ROUND_BIASED for IEEE-format with biased rounding.   * #define ROUND_BIASED for IEEE-format with biased rounding and arithmetic
    *      that rounds toward +Infinity.
    * #define ROUND_BIASED_without_Round_Up for IEEE-format with biased
    *      rounding when the underlying floating-point arithmetic uses
    *      unbiased rounding.  This prevent using ordinary floating-point
    *      arithmetic when the result could be computed with one rounding error.
  * #define Inaccurate_Divide for IEEE-format with correctly rounded   * #define Inaccurate_Divide for IEEE-format with correctly rounded
  *      products but inaccurate quotients, e.g., for Intel i860.   *      products but inaccurate quotients, e.g., for Intel i860.
  * #define NO_LONG_LONG on machines that do not have a "long long"   * #define NO_LONG_LONG on machines that do not have a "long long"
Line 115  THIS SOFTWARE.
Line 120  THIS SOFTWARE.
  * #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)   * #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)
  *      if memory is available and otherwise does something you deem   *      if memory is available and otherwise does something you deem
  *      appropriate.  If MALLOC is undefined, malloc will be invoked   *      appropriate.  If MALLOC is undefined, malloc will be invoked
  *      directly -- and assumed always to succeed.   *      directly -- and assumed always to succeed.  Similarly, if you
    *      want something other than the system's free() to be called to
    *      recycle memory acquired from MALLOC, #define FREE to be the
    *      name of the alternate routine.  (FREE or free is only called in
    *      pathological cases, e.g., in a gdtoa call after a gdtoa return in
    *      mode 3 with thousands of digits requested.)
  * #define Omit_Private_Memory to omit logic (added Jan. 1998) for making   * #define Omit_Private_Memory to omit logic (added Jan. 1998) for making
  *      memory allocations from a private pool of memory when possible.   *      memory allocations from a private pool of memory when possible.
  *      When used, the private pool is PRIVATE_MEM bytes long:  2304 bytes,   *      When used, the private pool is PRIVATE_MEM bytes long:  2304 bytes,
Line 128  THIS SOFTWARE.
Line 138  THIS SOFTWARE.
  *      conversions of IEEE doubles in single-threaded executions with   *      conversions of IEEE doubles in single-threaded executions with
  *      8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with   *      8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with
  *      4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.   *      4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.
  * #define INFNAN_CHECK on IEEE systems to cause strtod to check for   * #define NO_INFNAN_CHECK if you do not wish to have INFNAN_CHECK
  *      Infinity and NaN (case insensitively).   *      #defined automatically on IEEE systems.  On such systems,
    *      when INFNAN_CHECK is #defined, strtod checks
    *      for Infinity and NaN (case insensitively).
  *      When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,   *      When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
  *      strtodg also accepts (case insensitively) strings of the form   *      strtodg also accepts (case insensitively) strings of the form
  *      NaN(x), where x is a string of hexadecimal digits and spaces;   *      NaN(x), where x is a string of hexadecimal digits (optionally
  *      if there is only one string of hexadecimal digits, it is taken   *      preceded by 0x or 0X) and spaces; if there is only one string
  *      for the fraction bits of the resulting NaN; if there are two or   *      of hexadecimal digits, it is taken for the fraction bits of the
  *      more strings of hexadecimal digits, each string is assigned   *      resulting NaN; if there are two or more strings of hexadecimal
  *      to the next available sequence of 32-bit words of fractions   *      digits, each string is assigned to the next available sequence
  *      bits (starting with the most significant), right-aligned in   *      of 32-bit words of fractions bits (starting with the most
  *      each sequence.   *      significant), right-aligned in each sequence.
    *      Unless GDTOA_NON_PEDANTIC_NANCHECK is #defined, input "NaN(...)"
    *      is consumed even when ... has the wrong form (in which case the
    *      "(...)" is consumed but ignored).
  * #define MULTIPLE_THREADS if the system offers preemptively scheduled   * #define MULTIPLE_THREADS if the system offers preemptively scheduled
  *      multiple threads.  In this case, you must provide (or suitably   *      multiple threads.  In this case, you must provide (or suitably
  *      #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed   *      #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
Line 150  THIS SOFTWARE.
Line 165  THIS SOFTWARE.
  *      dtoa.  You may do so whether or not MULTIPLE_THREADS is #defined.   *      dtoa.  You may do so whether or not MULTIPLE_THREADS is #defined.
  * #define IMPRECISE_INEXACT if you do not care about the setting of   * #define IMPRECISE_INEXACT if you do not care about the setting of
  *      the STRTOG_Inexact bits in the special case of doing IEEE double   *      the STRTOG_Inexact bits in the special case of doing IEEE double
  *      precision conversions (which could also be done by the strtog in   *      precision conversions (which could also be done by the strtod in
  *      dtoa.c).   *      dtoa.c).
  * #define NO_HEX_FP to disable recognition of C9x's hexadecimal   * #define NO_HEX_FP to disable recognition of C9x's hexadecimal
  *      floating-point constants.   *      floating-point constants.
Line 159  THIS SOFTWARE.
Line 174  THIS SOFTWARE.
  * #define NO_STRING_H to use private versions of memcpy.   * #define NO_STRING_H to use private versions of memcpy.
  *      On some K&R systems, it may also be necessary to   *      On some K&R systems, it may also be necessary to
  *      #define DECLARE_SIZE_T in this case.   *      #define DECLARE_SIZE_T in this case.
  * #define YES_ALIAS to permit aliasing certain double values with  
  *      arrays of ULongs.  This leads to slightly better code with  
  *      some compilers and was always used prior to 19990916, but it  
  *      is not strictly legal and can cause trouble with aggressively  
  *      optimizing compilers (e.g., gcc 2.95.1 under -O2).  
  * #define USE_LOCALE to use the current locale's decimal_point value.   * #define USE_LOCALE to use the current locale's decimal_point value.
  */   */
   
Line 187  THIS SOFTWARE.
Line 197  THIS SOFTWARE.
 #define GDTOAIMP_H_INCLUDED  #define GDTOAIMP_H_INCLUDED
 #include "gdtoa.h"  #include "gdtoa.h"
 #include "gd_qnan.h"  #include "gd_qnan.h"
   #ifdef Honor_FLT_ROUNDS
   #include <fenv.h>
   #endif
   
 #ifdef DEBUG  #ifdef DEBUG
 #include "stdio.h"  #include "stdio.h"
Line 281  typedef union { double d; ULong L[2]; } 
Line 294  typedef union { double d; ULong L[2]; } 
 #ifdef YES_ALIAS  #ifdef YES_ALIAS
 #define dval(x) x  #define dval(x) x
 #ifdef IEEE_LITTLE_ENDIAN  #ifdef IEEE_LITTLE_ENDIAN
 #define word0(x) ((ULong *)&x)[1]  #define word0(x) ((ULong *)x)[1]
 #define word1(x) ((ULong *)&x)[0]  #define word1(x) ((ULong *)x)[0]
 #else  #else
 #define word0(x) ((ULong *)&x)[0]  #define word0(x) ((ULong *)x)[0]
 #define word1(x) ((ULong *)&x)[1]  #define word1(x) ((ULong *)x)[1]
 #endif  #endif
 #else /* !YES_ALIAS */  #else /* !YES_ALIAS */
 #ifdef IEEE_LITTLE_ENDIAN  #ifdef IEEE_LITTLE_ENDIAN
 #define word0(x) ( /* LINTED */ (U*)&x)->L[1]  #define word0(x) ( /* LINTED */ (U*)x)->L[1]
 #define word1(x) ( /* LINTED */ (U*)&x)->L[0]  #define word1(x) ( /* LINTED */ (U*)x)->L[0]
 #else  #else
 #define word0(x) ( /* LINTED */ (U*)&x)->L[0]  #define word0(x) ( /* LINTED */ (U*)x)->L[0]
 #define word1(x) ( /* LINTED */ (U*)&x)->L[1]  #define word1(x) ( /* LINTED */ (U*)x)->L[1]
 #endif  #endif
 #define dval(x) ( /* LINTED */ (U*)&x)->d  #define dval(x) ( /* LINTED */ (U*)x)->d
 #endif /* YES_ALIAS */  #endif /* YES_ALIAS */
   
 /* The following definition of Storeinc is appropriate for MIPS processors.  /* The following definition of Storeinc is appropriate for MIPS processors.
Line 414  typedef union { double d; ULong L[2]; } 
Line 427  typedef union { double d; ULong L[2]; } 
   
 #ifndef IEEE_Arith  #ifndef IEEE_Arith
 #define ROUND_BIASED  #define ROUND_BIASED
   #else
   #ifdef ROUND_BIASED_without_Round_Up
   #undef  ROUND_BIASED
   #define ROUND_BIASED
   #endif
 #endif  #endif
   
 #ifdef RND_PRODQUOT  #ifdef RND_PRODQUOT
Line 563  extern void memcpy_D2A ANSI((void*, cons
Line 581  extern void memcpy_D2A ANSI((void*, cons
  extern CONST double bigtens[], tens[], tinytens[];   extern CONST double bigtens[], tens[], tinytens[];
  extern unsigned char hexdig[];   extern unsigned char hexdig[];
   
  extern Bigint *Balloc ANSI((int));   extern Bigint *Balloc ANSI((size_t));
  extern void Bfree ANSI((Bigint*));   extern void Bfree ANSI((Bigint*));
  extern void ULtof ANSI((ULong*, ULong*, Long, int));   extern void ULtof ANSI((ULong*, ULong*, Long, int));
  extern void ULtod ANSI((ULong*, ULong*, Long, int));   extern void ULtod ANSI((ULong*, ULong*, Long, int));
Line 576  extern void memcpy_D2A ANSI((void*, cons
Line 594  extern void memcpy_D2A ANSI((void*, cons
  extern int cmp ANSI((Bigint*, Bigint*));   extern int cmp ANSI((Bigint*, Bigint*));
  extern void copybits ANSI((ULong*, int, Bigint*));   extern void copybits ANSI((ULong*, int, Bigint*));
  extern Bigint *d2b ANSI((double, int*, int*));   extern Bigint *d2b ANSI((double, int*, int*));
  extern int decrement ANSI((Bigint*));   extern void decrement ANSI((Bigint*));
  extern Bigint *diff ANSI((Bigint*, Bigint*));   extern Bigint *diff ANSI((Bigint*, Bigint*));
  extern char *dtoa ANSI((double d, int mode, int ndigits,   extern char *dtoa ANSI((double d, int mode, int ndigits,
                         int *decpt, int *sign, char **rve));                          int *decpt, int *sign, char **rve));
  extern char *g__fmt ANSI((char*, char*, char*, int, ULong));   extern char *g__fmt ANSI((char*, char*, char*, int, ULong, size_t));
  extern int gethex ANSI((CONST char**, CONST FPI*, Long*, Bigint**, int));   extern int gethex ANSI((CONST char**, CONST FPI*, Long*, Bigint**, int));
  extern void hexdig_init_D2A(Void);   extern void hexdig_init_D2A(Void);
  extern int hexnan ANSI((CONST char**, CONST FPI*, ULong*));   extern int hexnan ANSI((CONST char**, CONST FPI*, ULong*));
Line 598  extern void memcpy_D2A ANSI((void*, cons
Line 616  extern void memcpy_D2A ANSI((void*, cons
  extern double ratio ANSI((Bigint*, Bigint*));   extern double ratio ANSI((Bigint*, Bigint*));
  extern void rshift ANSI((Bigint*, int));   extern void rshift ANSI((Bigint*, int));
  extern char *rv_alloc ANSI((size_t));   extern char *rv_alloc ANSI((size_t));
  extern Bigint *s2b ANSI((CONST char*, int, int, ULong));   extern Bigint *s2b ANSI((CONST char*, int, int, ULong, int));
  extern Bigint *set_ones ANSI((Bigint*, int));   extern Bigint *set_ones ANSI((Bigint*, int));
  extern char *strcp ANSI((char*, const char*));   extern char *strcp ANSI((char*, const char*));
  extern int strtoIg ANSI((CONST char*, char**, FPI*, Long*, Bigint**, int*));   extern int strtoIg ANSI((CONST char*, char**, FPI*, Long*, Bigint**, int*));
  extern double strtod ANSI((const char *s00, char **se));   extern double strtod ANSI((const char *s00, char **se));
  extern Bigint *sum ANSI((Bigint*, Bigint*));   extern Bigint *sum ANSI((Bigint*, Bigint*));
  extern int trailz ANSI((CONST Bigint*));   extern int trailz ANSI((CONST Bigint*));
  extern double ulp ANSI((double));  /*###626 [lint] syntax error '*' [249]%%%*/
   /*###626 [lint] incomplete or misplaced function definition [22]%%%*/
    extern double ulp ANSI((U*));
   
 #ifdef __cplusplus  #ifdef __cplusplus
 }  }
Line 620  extern void memcpy_D2A ANSI((void*, cons
Line 640  extern void memcpy_D2A ANSI((void*, cons
  * (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)   * (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
  */   */
 #ifdef IEEE_Arith  #ifdef IEEE_Arith
   #ifndef NO_INFNAN_CHECK
   #undef INFNAN_CHECK
   #define INFNAN_CHECK
   #endif
 #ifdef IEEE_BIG_ENDIAN  #ifdef IEEE_BIG_ENDIAN
 #define _0 0  #define _0 0
 #define _1 1  #define _1 1

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