1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
ruby--ruby/ext/bigdecimal/bigdecimal.h

387 lines
12 KiB
C
Raw Normal View History

/*
*
* Ruby BigDecimal(Variable decimal precision) extension library.
*
* Copyright(C) 2002 by Shigeo Kobayashi(shigeo@tinyforest.gr.jp)
*
*/
#ifndef RUBY_BIG_DECIMAL_H
#define RUBY_BIG_DECIMAL_H 1
#include "ruby/ruby.h"
#include <float.h>
#ifndef RB_UNUSED_VAR
# ifdef __GNUC__
# define RB_UNUSED_VAR(x) x __attribute__ ((unused))
# else
# define RB_UNUSED_VAR(x) x
# endif
#endif
#ifndef UNREACHABLE
# define UNREACHABLE /* unreachable */
#endif
#undef BDIGIT
#undef SIZEOF_BDIGITS
#undef BDIGIT_DBL
#undef BDIGIT_DBL_SIGNED
#undef PRI_BDIGIT_PREFIX
#undef PRI_BDIGIT_DBL_PREFIX
#ifdef HAVE_INT64_T
# define BDIGIT uint32_t
# define BDIGIT_DBL uint64_t
# define BDIGIT_DBL_SIGNED int64_t
# define SIZEOF_BDIGITS 4
# define PRI_BDIGIT_PREFIX ""
# ifdef PRI_LL_PREFIX
# define PRI_BDIGIT_DBL_PREFIX PRI_LL_PREFIX
# else
# define PRI_BDIGIT_DBL_PREFIX "l"
# endif
#else
# define BDIGIT uint16_t
# define BDIGIT_DBL uint32_t
# define BDIGIT_DBL_SIGNED int32_t
# define SIZEOF_BDIGITS 2
# define PRI_BDIGIT_PREFIX "h"
# define PRI_BDIGIT_DBL_PREFIX ""
#endif
#define PRIdBDIGIT PRI_BDIGIT_PREFIX"d"
#define PRIiBDIGIT PRI_BDIGIT_PREFIX"i"
#define PRIoBDIGIT PRI_BDIGIT_PREFIX"o"
#define PRIuBDIGIT PRI_BDIGIT_PREFIX"u"
#define PRIxBDIGIT PRI_BDIGIT_PREFIX"x"
#define PRIXBDIGIT PRI_BDIGIT_PREFIX"X"
#define PRIdBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"d"
#define PRIiBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"i"
#define PRIoBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"o"
#define PRIuBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"u"
#define PRIxBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"x"
#define PRIXBDIGIT_DBL PRI_BDIGIT_DBL_PREFIX"X"
#if defined(__cplusplus)
extern "C" {
#if 0
} /* satisfy cc-mode */
#endif
#endif
#ifndef HAVE_LABS
static inline long
labs(long const x)
{
if (x < 0) return -x;
return x;
}
#endif
#ifndef HAVE_LLABS
static inline LONG_LONG
llabs(LONG_LONG const x)
{
if (x < 0) return -x;
return x;
}
#endif
#ifndef HAVE_FINITE
static int
finite(double)
{
return !isnan(n) && !isinf(n);
}
#endif
#ifndef isfinite
# ifndef HAVE_ISFINITE
# define HAVE_ISFINITE 1
# define isfinite(x) finite(x)
# endif
#endif
#ifndef FIX_CONST_VALUE_PTR
# if defined(__fcc__) || defined(__fcc_version) || \
defined(__FCC__) || defined(__FCC_VERSION)
/* workaround for old version of Fujitsu C Compiler (fcc) */
# define FIX_CONST_VALUE_PTR(x) ((const VALUE *)(x))
# else
# define FIX_CONST_VALUE_PTR(x) (x)
# endif
#endif
#ifndef HAVE_RB_ARRAY_CONST_PTR
static inline const VALUE *
rb_array_const_ptr(VALUE a)
{
return FIX_CONST_VALUE_PTR((RBASIC(a)->flags & RARRAY_EMBED_FLAG) ?
RARRAY(a)->as.ary : RARRAY(a)->as.heap.ptr);
}
#endif
#ifndef RARRAY_CONST_PTR
# define RARRAY_CONST_PTR(a) rb_array_const_ptr(a)
#endif
#ifndef RARRAY_AREF
# define RARRAY_AREF(a, i) (RARRAY_CONST_PTR(a)[i])
#endif
#ifndef HAVE_RB_SYM2STR
static inline VALUE
rb_sym2str(VALUE sym)
{
return rb_id2str(SYM2ID(sym));
}
#endif
#ifdef vabs
# undef vabs
#endif
#if SIZEOF_VALUE <= SIZEOF_INT
# define vabs abs
#elif SIZEOF_VALUE <= SIZEOF_LONG
# define vabs labs
#elif SIZEOF_VALUE <= SIZEOF_LONG_LONG
# define vabs llabs
#endif
extern VALUE rb_cBigDecimal;
#if 0 || SIZEOF_BDIGITS >= 16
# define RMPD_COMPONENT_FIGURES 38
# define RMPD_BASE ((BDIGIT)100000000000000000000000000000000000000U)
#elif SIZEOF_BDIGITS >= 8
# define RMPD_COMPONENT_FIGURES 19
# define RMPD_BASE ((BDIGIT)10000000000000000000U)
#elif SIZEOF_BDIGITS >= 4
# define RMPD_COMPONENT_FIGURES 9
# define RMPD_BASE ((BDIGIT)1000000000U)
#elif SIZEOF_BDIGITS >= 2
# define RMPD_COMPONENT_FIGURES 4
# define RMPD_BASE ((BDIGIT)10000U)
#else
# define RMPD_COMPONENT_FIGURES 2
# define RMPD_BASE ((BDIGIT)100U)
#endif
/*
* NaN & Infinity
*/
#define SZ_NaN "NaN"
#define SZ_INF "Infinity"
#define SZ_PINF "+Infinity"
#define SZ_NINF "-Infinity"
/*
* #define VP_EXPORT other than static to let VP_ routines
* be called from outside of this module.
*/
#define VP_EXPORT static
/* Exception codes */
#define VP_EXCEPTION_ALL ((unsigned short)0x00FF)
#define VP_EXCEPTION_INFINITY ((unsigned short)0x0001)
#define VP_EXCEPTION_NaN ((unsigned short)0x0002)
#define VP_EXCEPTION_UNDERFLOW ((unsigned short)0x0004)
#define VP_EXCEPTION_OVERFLOW ((unsigned short)0x0001) /* 0x0008) */
#define VP_EXCEPTION_ZERODIVIDE ((unsigned short)0x0010)
/* Following 2 exceptions can't controlled by user */
#define VP_EXCEPTION_OP ((unsigned short)0x0020)
#define VP_EXCEPTION_MEMORY ((unsigned short)0x0040)
#define RMPD_EXCEPTION_MODE_DEFAULT 0U
/* Computation mode */
#define VP_ROUND_MODE ((unsigned short)0x0100)
#define VP_ROUND_UP 1
#define VP_ROUND_DOWN 2
#define VP_ROUND_HALF_UP 3
#define VP_ROUND_HALF_DOWN 4
#define VP_ROUND_CEIL 5
#define VP_ROUND_FLOOR 6
#define VP_ROUND_HALF_EVEN 7
#define RMPD_ROUNDING_MODE_DEFAULT VP_ROUND_HALF_UP
#define VP_SIGN_NaN 0 /* NaN */
#define VP_SIGN_POSITIVE_ZERO 1 /* Positive zero */
#define VP_SIGN_NEGATIVE_ZERO -1 /* Negative zero */
#define VP_SIGN_POSITIVE_FINITE 2 /* Positive finite number */
#define VP_SIGN_NEGATIVE_FINITE -2 /* Negative finite number */
#define VP_SIGN_POSITIVE_INFINITE 3 /* Positive infinite number */
#define VP_SIGN_NEGATIVE_INFINITE -3 /* Negative infinite number */
#ifdef __GNUC__
#define FLEXIBLE_ARRAY_SIZE 0
#else
#define FLEXIBLE_ARRAY_SIZE 1
#endif
/*
* VP representation
* r = 0.xxxxxxxxx *BASE**exponent
*/
typedef struct {
VALUE obj; /* Back pointer(VALUE) for Ruby object. */
size_t MaxPrec; /* Maximum precision size */
/* This is the actual size of frac[] */
/*(frac[0] to frac[MaxPrec] are available). */
size_t Prec; /* Current precision size. */
/* This indicates how much the */
/* array frac[] is actually used. */
SIGNED_VALUE exponent; /* Exponent part. */
short sign; /* Attributes of the value. */
/*
* ==0 : NaN
* 1 : Positive zero
* -1 : Negative zero
* 2 : Positive number
* -2 : Negative number
* 3 : Positive infinite number
* -3 : Negative infinite number
*/
short flag; /* Not used in vp_routines,space for user. */
BDIGIT frac[FLEXIBLE_ARRAY_SIZE]; /* Array of fraction part. */
} Real;
/*
* ------------------
* EXPORTables.
* ------------------
*/
VP_EXPORT Real *
VpNewRbClass(size_t mx, char const *str, VALUE klass);
VP_EXPORT Real *VpCreateRbObject(size_t mx,const char *str);
static inline BDIGIT
rmpd_base_value(void) { return RMPD_BASE; }
static inline size_t
rmpd_component_figures(void) { return RMPD_COMPONENT_FIGURES; }
static inline size_t
rmpd_double_figures(void) { return 1+DBL_DIG; }
#define VpBaseFig() rmpd_component_figures()
#define VpDblFig() rmpd_double_figures()
#define VpBaseVal() rmpd_base_value()
/* Zero,Inf,NaN (isinf(),isnan() used to check) */
VP_EXPORT double VpGetDoubleNaN(void);
VP_EXPORT double VpGetDoublePosInf(void);
VP_EXPORT double VpGetDoubleNegInf(void);
VP_EXPORT double VpGetDoubleNegZero(void);
/* These 2 functions added at v1.1.7 */
VP_EXPORT size_t VpGetPrecLimit(void);
VP_EXPORT size_t VpSetPrecLimit(size_t n);
/* Round mode */
VP_EXPORT int VpIsRoundMode(unsigned short n);
VP_EXPORT unsigned short VpGetRoundMode(void);
VP_EXPORT unsigned short VpSetRoundMode(unsigned short n);
* sprintf.c (rb_str_format): allow %c to print one character string (e.g. ?x). * lib/tempfile.rb (Tempfile::make_tmpname): put dot between basename and pid. [ruby-talk:196272] * parse.y (do_block): remove -> style block. * parse.y (parser_yylex): remove tLAMBDA_ARG. * eval.c (rb_call0): binding for the return event hook should have consistent scope. [ruby-core:07928] * eval.c (proc_invoke): return behavior should depend whether it is surrounded by a lambda or a mere block. * eval.c (formal_assign): handles post splat arguments. * eval.c (rb_call0): ditto. * st.c (strhash): use FNV-1a hash. * parse.y (parser_yylex): removed experimental ';;' terminator. * eval.c (rb_node_arity): should be aware of post splat arguments. * eval.c (rb_proc_arity): ditto. * parse.y (f_args): syntax rule enhanced to support arguments after the splat. * parse.y (block_param): ditto for block parameters. * parse.y (f_post_arg): mandatory formal arguments after the splat argument. * parse.y (new_args_gen): generate nodes for mandatory formal arguments after the splat argument. * eval.c (rb_eval): dispatch mandatory formal arguments after the splat argument. * parse.y (args): allow more than one splat in the argument list. * parse.y (method_call): allow aref [] to accept all kind of method argument, including assocs, splat, and block argument. * eval.c (SETUP_ARGS0): prepare block argument as well. * lib/mathn.rb (Integer): remove Integer#gcd2. [ruby-core:07931] * eval.c (error_line): print receivers true/false/nil specially. * eval.c (rb_proc_yield): handles parameters in yield semantics. * eval.c (nil_yield): gives LocalJumpError to denote no block error. * io.c (rb_io_getc): now takes one-character string. * string.c (rb_str_hash): use FNV-1a hash from Fowler/Noll/Vo hashing algorithm. * string.c (rb_str_aref): str[0] now returns 1 character string, instead of a fixnum. [Ruby2] * parse.y (parser_yylex): ?c now returns 1 character string, instead of a fixnum. [Ruby2] * string.c (rb_str_aset): no longer support fixnum insertion. * eval.c (umethod_bind): should not update original class. [ruby-dev:28636] * eval.c (ev_const_get): should support constant access from within instance_eval(). [ruby-dev:28327] * time.c (time_timeval): should round for usec floating number. [ruby-core:07896] * time.c (time_add): ditto. * dir.c (sys_warning): should not call a vararg function rb_sys_warning() indirectly. [ruby-core:07886] * numeric.c (flo_divmod): the first element of Float#divmod should be an integer. [ruby-dev:28589] * test/ruby/test_float.rb: add tests for divmod, div, modulo and remainder. * re.c (rb_reg_initialize): should not allow modifying literal regexps. frozen check moved from rb_reg_initialize_m as well. * re.c (rb_reg_initialize): should not modify untainted objects in safe levels higher than 3. * re.c (rb_memcmp): type change from char* to const void*. * dir.c (dir_close): should not close untainted dir stream. * dir.c (GetDIR): add tainted/frozen check for each dir operation. * lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_symbol_arg): typo fixed. a patch from Florian Gross <florg at florg.net>. * eval.c (EXEC_EVENT_HOOK): trace_func may remove itself from event_hooks. no guarantee for arbitrary hook deletion. [ruby-dev:28632] * util.c (ruby_strtod): differ addition to minimize error. [ruby-dev:28619] * util.c (ruby_strtod): should not raise ERANGE when the input string does not have any digits. [ruby-dev:28629] * eval.c (proc_invoke): should restore old ruby_frame->block. thanks to ts <decoux at moulon.inra.fr>. [ruby-core:07833] also fix [ruby-dev:28614] as well. * signal.c (trap): sig should be less then NSIG. Coverity found this bug. a patch from Kevin Tew <tewk at tewk.com>. [ruby-core:07823] * math.c (math_log2): add new method inspired by [ruby-talk:191237]. * math.c (math_log): add optional base argument to Math::log(). [ruby-talk:191308] * ext/syck/emitter.c (syck_scan_scalar): avoid accessing uninitialized array element. a patch from Pat Eyler <rubypate at gmail.com>. [ruby-core:07809] * array.c (rb_ary_fill): initialize local variables first. a patch from Pat Eyler <rubypate at gmail.com>. [ruby-core:07810] * ext/syck/yaml2byte.c (syck_yaml2byte_handler): need to free type_tag. a patch from Pat Eyler <rubypate at gmail.com>. [ruby-core:07808] * ext/socket/socket.c (make_hostent_internal): accept ai_family check from Sam Roberts <sroberts at uniserve.com>. [ruby-core:07691] * util.c (ruby_strtod): should not cut off 18 digits for no reason. [ruby-core:07796] * array.c (rb_ary_fill): internalize local variable "beg" to pacify Coverity. [ruby-core:07770] * pack.c (pack_unpack): now supports CRLF newlines. a patch from <tommy at tmtm.org>. [ruby-dev:28601] * applied code clean-up patch from Stefan Huehner <stefan at huehner.org>. [ruby-core:07764] * lib/jcode.rb (String::tr_s): should have translated non squeezing character sequence (i.e. a character) as well. thanks to Hiroshi Ichikawa <gimite at gimite.ddo.jp> [ruby-list:42090] * ext/socket/socket.c: document update patch from Sam Roberts <sroberts at uniserve.com>. [ruby-core:07701] * lib/mathn.rb (Integer): need not to remove gcd2. a patch from NARUSE, Yui <naruse at airemix.com>. [ruby-dev:28570] * parse.y (arg): too much NEW_LIST() * eval.c (SETUP_ARGS0): remove unnecessary access to nd_alen. * eval.c (rb_eval): use ARGSCAT for NODE_OP_ASGN1. [ruby-dev:28585] * parse.y (arg): use NODE_ARGSCAT for placeholder. * lib/getoptlong.rb (GetoptLong::get): RDoc update patch from mathew <meta at pobox.com>. [ruby-core:07738] * variable.c (rb_const_set): raise error when no target klass is supplied. [ruby-dev:28582] * prec.c (prec_prec_f): documentation patch from <gerardo.santana at gmail.com>. [ruby-core:07689] * bignum.c (rb_big_pow): second operand may be too big even if it's a Fixnum. [ruby-talk:187984] * README.EXT: update symbol description. [ruby-talk:188104] * COPYING: explicitly note GPLv2. [ruby-talk:187922] * parse.y: remove some obsolete syntax rules (unparenthesized method calls in argument list). * eval.c (rb_call0): insecure calling should be checked for non NODE_SCOPE method invocations too. * eval.c (rb_alias): should preserve the current safe level as well as method definition. * process.c (rb_f_sleep): remove RDoc description about SIGALRM which is not valid on the current implementation. [ruby-dev:28464] Thu Mar 23 21:40:47 2006 K.Kosako <sndgk393 AT ybb.ne.jp> * eval.c (method_missing): should support argument splat in super. a bug in combination of super, splat and method_missing. [ruby-talk:185438] * configure.in: Solaris SunPro compiler -rapth patch from <kuwa at labs.fujitsu.com>. [ruby-dev:28443] * configure.in: remove enable_rpath=no for Solaris. [ruby-dev:28440] * ext/win32ole/win32ole.c (ole_val2olevariantdata): change behavior of converting OLE Variant object with VT_ARRAY|VT_UI1 and Ruby String object. * ruby.1: a clarification patch from David Lutterkort <dlutter at redhat.com>. [ruby-core:7508] * lib/rdoc/ri/ri_paths.rb (RI::Paths): adding paths from rubygems directories. a patch from Eric Hodel <drbrain at segment7.net>. [ruby-core:07423] * eval.c (rb_clear_cache_by_class): clearing wrong cache. * ext/extmk.rb: use :remove_destination to install extension libraries to avoid SEGV. [ruby-dev:28417] * eval.c (rb_thread_fd_writable): should not re-schedule output from KILLED thread (must be error printing). * array.c (rb_ary_flatten_bang): allow specifying recursion level. [ruby-talk:182170] * array.c (rb_ary_flatten): ditto. * gc.c (add_heap): a heap_slots may overflow. a patch from Stefan Weil <weil at mail.berlios.de>. * eval.c (rb_call): use separate cache for fcall/vcall invocation. * eval.c (rb_eval): NODE_FCALL, NODE_VCALL can call local functions. * eval.c (rb_mod_local): a new method to specify newly added visibility "local". * eval.c (search_method): search for local methods which are visible only from the current class. * class.c (rb_class_local_methods): a method to list local methods. * object.c (Init_Object): add BasicObject class as a top level BlankSlate class. * ruby.h (SYM2ID): should not cast to signed long. [ruby-core:07414] * class.c (rb_include_module): allow module duplication. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10235 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2006-06-09 17:20:17 -04:00
VP_EXPORT int VpException(unsigned short f,const char *str,int always);
#if 0 /* unused */
VP_EXPORT int VpIsNegDoubleZero(double v);
#endif
VP_EXPORT size_t VpNumOfChars(Real *vp,const char *pszFmt);
VP_EXPORT size_t VpInit(BDIGIT BaseVal);
VP_EXPORT void *VpMemAlloc(size_t mb);
VP_EXPORT void *VpMemRealloc(void *ptr, size_t mb);
VP_EXPORT void VpFree(Real *pv);
VP_EXPORT Real *VpAlloc(size_t mx, const char *szVal);
VP_EXPORT size_t VpAsgn(Real *c, Real *a, int isw);
VP_EXPORT size_t VpAddSub(Real *c,Real *a,Real *b,int operation);
VP_EXPORT size_t VpMult(Real *c,Real *a,Real *b);
VP_EXPORT size_t VpDivd(Real *c,Real *r,Real *a,Real *b);
VP_EXPORT int VpComp(Real *a,Real *b);
VP_EXPORT ssize_t VpExponent10(Real *a);
VP_EXPORT void VpSzMantissa(Real *a,char *psz);
VP_EXPORT int VpToSpecialString(Real *a,char *psz,int fPlus);
VP_EXPORT void VpToString(Real *a, char *psz, size_t fFmt, int fPlus);
VP_EXPORT void VpToFString(Real *a, char *psz, size_t fFmt, int fPlus);
VP_EXPORT int VpCtoV(Real *a, const char *int_chr, size_t ni, const char *frac, size_t nf, const char *exp_chr, size_t ne);
VP_EXPORT int VpVtoD(double *d, SIGNED_VALUE *e, Real *m);
VP_EXPORT void VpDtoV(Real *m,double d);
#if 0 /* unused */
VP_EXPORT void VpItoV(Real *m,S_INT ival);
#endif
VP_EXPORT int VpSqrt(Real *y,Real *x);
VP_EXPORT int VpActiveRound(Real *y, Real *x, unsigned short f, ssize_t il);
VP_EXPORT int VpMidRound(Real *y, unsigned short f, ssize_t nf);
VP_EXPORT int VpLeftRound(Real *y, unsigned short f, ssize_t nf);
VP_EXPORT void VpFrac(Real *y, Real *x);
VP_EXPORT int VpPower(Real *y, Real *x, SIGNED_VALUE n);
/* VP constants */
VP_EXPORT Real *VpOne(void);
/*
* ------------------
* MACRO definitions.
* ------------------
*/
#define Abs(a) (((a)>= 0)?(a):(-(a)))
#define Max(a, b) (((a)>(b))?(a):(b))
#define Min(a, b) (((a)>(b))?(b):(a))
#define VpMaxPrec(a) ((a)->MaxPrec)
#define VpPrec(a) ((a)->Prec)
#define VpGetFlag(a) ((a)->flag)
/* Sign */
/* VpGetSign(a) returns 1,-1 if a>0,a<0 respectively */
#define VpGetSign(a) (((a)->sign>0)?1:(-1))
/* Change sign of a to a>0,a<0 if s = 1,-1 respectively */
#define VpChangeSign(a,s) {if((s)>0) (a)->sign=(short)Abs((ssize_t)(a)->sign);else (a)->sign=-(short)Abs((ssize_t)(a)->sign);}
/* Sets sign of a to a>0,a<0 if s = 1,-1 respectively */
#define VpSetSign(a,s) {if((s)>0) (a)->sign=(short)VP_SIGN_POSITIVE_FINITE;else (a)->sign=(short)VP_SIGN_NEGATIVE_FINITE;}
/* 1 */
#define VpSetOne(a) {(a)->Prec=(a)->exponent=(a)->frac[0]=1;(a)->sign=VP_SIGN_POSITIVE_FINITE;}
/* ZEROs */
#define VpIsPosZero(a) ((a)->sign==VP_SIGN_POSITIVE_ZERO)
#define VpIsNegZero(a) ((a)->sign==VP_SIGN_NEGATIVE_ZERO)
#define VpIsZero(a) (VpIsPosZero(a) || VpIsNegZero(a))
#define VpSetPosZero(a) ((a)->frac[0]=0,(a)->Prec=1,(a)->sign=VP_SIGN_POSITIVE_ZERO)
#define VpSetNegZero(a) ((a)->frac[0]=0,(a)->Prec=1,(a)->sign=VP_SIGN_NEGATIVE_ZERO)
#define VpSetZero(a,s) (void)(((s)>0)?VpSetPosZero(a):VpSetNegZero(a))
/* NaN */
#define VpIsNaN(a) ((a)->sign==VP_SIGN_NaN)
#define VpSetNaN(a) ((a)->frac[0]=0,(a)->Prec=1,(a)->sign=VP_SIGN_NaN)
/* Infinity */
#define VpIsPosInf(a) ((a)->sign==VP_SIGN_POSITIVE_INFINITE)
#define VpIsNegInf(a) ((a)->sign==VP_SIGN_NEGATIVE_INFINITE)
#define VpIsInf(a) (VpIsPosInf(a) || VpIsNegInf(a))
#define VpIsDef(a) ( !(VpIsNaN(a)||VpIsInf(a)) )
#define VpSetPosInf(a) ((a)->frac[0]=0,(a)->Prec=1,(a)->sign=VP_SIGN_POSITIVE_INFINITE)
#define VpSetNegInf(a) ((a)->frac[0]=0,(a)->Prec=1,(a)->sign=VP_SIGN_NEGATIVE_INFINITE)
#define VpSetInf(a,s) (void)(((s)>0)?VpSetPosInf(a):VpSetNegInf(a))
#define VpHasVal(a) (a->frac[0])
#define VpIsOne(a) ((a->Prec==1)&&(a->frac[0]==1)&&(a->exponent==1))
#define VpExponent(a) (a->exponent)
#ifdef BIGDECIMAL_DEBUG
int VpVarCheck(Real * v);
#endif /* BIGDECIMAL_DEBUG */
#if defined(__cplusplus)
#if 0
{ /* satisfy cc-mode */
#endif
} /* extern "C" { */
#endif
#endif /* RUBY_BIG_DECIMAL_H */