/*
* Copyright (c) 1997
* Silicon Graphics Computer Systems, Inc.
*
* Copyright (c) 1999
* Boris Fomitchev
*
* This material is provided "as is", with absolutely no warranty expressed
* or implied. Any use is at your own risk.
*
* Permission to use or copy this software for any purpose is hereby granted
* without fee, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*
*/
/* NOTE: This may be not portable code. Parts of numeric_limits<> are
* inherently machine-dependent. At present this file is suitable
* for the MIPS, SPARC, Alpha and ia32 architectures.
*/
#ifndef _STLP_INTERNAL_LIMITS
#define _STLP_INTERNAL_LIMITS
#ifndef _STLP_CLIMITS
# include <climits>
#endif
#ifndef _STLP_CFLOAT
# include <cfloat>
#endif
#if defined (_STLP_HAS_WCHAR_T) && !defined (_STLP_INTERNAL_CWCHAR)
# include <stl/_cwchar.h>
#endif
_STLP_BEGIN_NAMESPACE
enum float_round_style {
round_indeterminate = -1,
round_toward_zero = 0,
round_to_nearest = 1,
round_toward_infinity = 2,
round_toward_neg_infinity = 3
};
enum float_denorm_style {
denorm_indeterminate = -1,
denorm_absent = 0,
denorm_present = 1
};
_STLP_MOVE_TO_PRIV_NAMESPACE
// Base class for all specializations of numeric_limits.
template <class __number>
class _Numeric_limits_base {
public:
static __number (_STLP_CALL min)() _STLP_NOTHROW { return __number(); }
static __number (_STLP_CALL max)() _STLP_NOTHROW { return __number(); }
#if defined ( _STLP_STATIC_CONST_INIT_BUG)
enum {
#else
static const int
#endif
digits = 0,
digits10 = 0,
radix = 0,
min_exponent = 0,
min_exponent10 = 0,
max_exponent = 0,
max_exponent10 = 0
#if defined ( _STLP_STATIC_CONST_INIT_BUG)
,
has_denorm = denorm_absent,
round_style = round_toward_zero,
#else
;
static const float_denorm_style has_denorm = denorm_absent;
static const float_round_style round_style = round_toward_zero;
static const bool
#endif
is_specialized = false,
is_signed = false,
is_integer = false,
is_exact = false,
has_infinity = false,
has_quiet_NaN = false,
has_signaling_NaN = false,
has_denorm_loss = false,
is_iec559 = false,
is_bounded = false,
is_modulo = false,
traps = false,
tinyness_before = false
#if defined ( _STLP_STATIC_CONST_INIT_BUG)
}
#endif
;
static __number _STLP_CALL epsilon() _STLP_NOTHROW { return __number(); }
static __number _STLP_CALL round_error() _STLP_NOTHROW { return __number(); }
static __number _STLP_CALL infinity() _STLP_NOTHROW { return __number(); }
static __number _STLP_CALL quiet_NaN() _STLP_NOTHROW { return __number(); }
static __number _STLP_CALL signaling_NaN() _STLP_NOTHROW { return __number(); }
static __number _STLP_CALL denorm_min() _STLP_NOTHROW { return __number(); }
};
// Base class for integers.
#ifdef _STLP_LIMITED_DEFAULT_TEMPLATES
# ifdef _STLP_LONG_LONG
# define _STLP_LIMITS_MIN_TYPE _STLP_LONG_LONG
# define _STLP_LIMITS_MAX_TYPE unsigned _STLP_LONG_LONG
# else
# define _STLP_LIMITS_MIN_TYPE long
# define _STLP_LIMITS_MAX_TYPE unsigned long
# endif
#else
# define _STLP_LIMITS_MIN_TYPE _Int
# define _STLP_LIMITS_MAX_TYPE _Int
#endif /* _STLP_LIMITED_DEFAULT_TEMPLATES */
template <class _Int,
_STLP_LIMITS_MIN_TYPE __imin,
_STLP_LIMITS_MAX_TYPE __imax,
int __idigits, bool __ismod>
class _Integer_limits : public _Numeric_limits_base<_Int> {
public:
static _Int (_STLP_CALL min) () _STLP_NOTHROW { return (_Int)__imin; }
static _Int (_STLP_CALL max) () _STLP_NOTHROW { return (_Int)__imax; }
#if defined (_STLP_STATIC_CONST_INIT_BUG)
enum {
#else
static const int
#endif
digits = (__idigits < 0) ?
((int)((sizeof(_Int) * (CHAR_BIT))) - ((__imin == 0) ? 0 : 1))
: (__idigits),
digits10 = (digits * 301UL) / 1000,
radix = 2
#if !defined (_STLP_STATIC_CONST_INIT_BUG)
;
static const bool
#else
,
#endif
is_specialized = true,
is_signed = (__imin != 0),
is_integer = true,
is_exact = true,
is_bounded = true,
is_modulo = __ismod
#if defined ( _STLP_STATIC_CONST_INIT_BUG)
}
#endif
;
};
// Base class for floating-point numbers.
template <class __number,
int __Digits, int __Digits10,
int __MinExp, int __MaxExp,
int __MinExp10, int __MaxExp10,
bool __IsIEC559,
float_round_style __RoundStyle>
class _Floating_limits : public _Numeric_limits_base<__number> {
public:
#if defined (_STLP_STATIC_CONST_INIT_BUG)
enum {
#else
static const int
#endif
digits = __Digits,
digits10 = __Digits10,
radix = ( FLT_RADIX /* 2 */ ),
min_exponent = __MinExp,
max_exponent = __MaxExp,
min_exponent10 = __MinExp10,
max_exponent10 = __MaxExp10
#if defined (_STLP_STATIC_CONST_INIT_BUG)
,
has_denorm = denorm_indeterminate,
round_style = __RoundStyle,
#else
;
static const float_denorm_style has_denorm = denorm_indeterminate;
static const float_round_style round_style = __RoundStyle;
static const bool
#endif
is_specialized = true,
is_signed = true,
//IEC 559 specify the floating point representation of
//infinity, quiet and signaling Not a Number. Not supporting
//it is consider as not being able to grant those values.
#if (defined (_STLP_MSVC) && (_STLP_MSVC < 1300))
//MSVC 6 do not fully support IEC 599 but grant a good infinity value.
has_infinity = true,
#else
has_infinity = __IsIEC559,
#endif
has_quiet_NaN = __IsIEC559,
has_signaling_NaN = __IsIEC559,
has_denorm_loss = false,
is_iec559 = __IsIEC559,
is_bounded = true,
traps = true,
tinyness_before= false
#if defined (_STLP_STATIC_CONST_INIT_BUG)
}
#endif
;
};
_STLP_MOVE_TO_STD_NAMESPACE
// Class numeric_limits
// The unspecialized class.
template<class _Tp>
class numeric_limits : public _STLP_PRIV _Numeric_limits_base<_Tp> {};
// Specializations for all built-in integral types.
#if !defined (_STLP_NO_BOOL)
_STLP_TEMPLATE_NULL
class numeric_limits<bool>
: public _STLP_PRIV _Integer_limits<bool, false, true, 1, false>
{};
#endif /* _STLP_NO_BOOL */
_STLP_TEMPLATE_NULL
class numeric_limits<char>
: public _STLP_PRIV _Integer_limits<char, CHAR_MIN, CHAR_MAX, -1, true>
{};
#if !defined (_STLP_NO_SIGNED_BUILTINS)
_STLP_TEMPLATE_NULL
class numeric_limits<signed char>
: public _STLP_PRIV _Integer_limits<signed char, SCHAR_MIN, SCHAR_MAX, -1, true>
{};
#endif
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned char>
: public _STLP_PRIV _Integer_limits<unsigned char, 0, UCHAR_MAX, -1, true>
{};
#if !(defined (_STLP_NO_WCHAR_T) || defined (_STLP_WCHAR_T_IS_USHORT))
_STLP_TEMPLATE_NULL
class numeric_limits<wchar_t>
: public _STLP_PRIV _Integer_limits<wchar_t, WCHAR_MIN, WCHAR_MAX, -1, true>
{};
#endif
_STLP_TEMPLATE_NULL
class numeric_limits<short>
: public _STLP_PRIV _Integer_limits<short, SHRT_MIN, SHRT_MAX, -1, true>
{};
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned short>
: public _STLP_PRIV _Integer_limits<unsigned short, 0, USHRT_MAX, -1, true>
{};
#if defined (__xlC__) && (__xlC__ == 0x500)
# undef INT_MIN
# define INT_MIN -2147483648
#endif
_STLP_TEMPLATE_NULL
class numeric_limits<int>
: public _STLP_PRIV _Integer_limits<int, INT_MIN, INT_MAX, -1, true>
{};
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned int>
: public _STLP_PRIV _Integer_limits<unsigned int, 0, UINT_MAX, -1, true>
{};
_STLP_TEMPLATE_NULL
class numeric_limits<long>
: public _STLP_PRIV _Integer_limits<long, LONG_MIN, LONG_MAX, -1, true>
{};
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned long>
: public _STLP_PRIV _Integer_limits<unsigned long, 0, ULONG_MAX, -1, true>
{};
#if defined (_STLP_LONG_LONG)
# if defined (_STLP_MSVC) || defined (__BORLANDC__)
# define LONGLONG_MAX 0x7fffffffffffffffi64
# define LONGLONG_MIN (-LONGLONG_MAX-1i64)
# define ULONGLONG_MAX 0xffffffffffffffffUi64
# else
# ifndef LONGLONG_MAX
# define LONGLONG_MAX 0x7fffffffffffffffLL
# endif
# ifndef LONGLONG_MIN
# define LONGLONG_MIN (-LONGLONG_MAX-1LL)
# endif
# ifndef ULONGLONG_MAX
# define ULONGLONG_MAX 0xffffffffffffffffULL
# endif
# endif
# if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ <= 96)
_STLP_TEMPLATE_NULL
class numeric_limits<_STLP_LONG_LONG>
: public _STLP_PRIV _Integer_limits<_STLP_LONG_LONG, LONGLONG_MIN, LONGLONG_MAX, -1, true>
{};
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned _STLP_LONG_LONG>
: public _STLP_PRIV _Integer_limits<unsigned _STLP_LONG_LONG, 0, ULONGLONG_MAX, -1, true>
{};
# else /* gcc 2.97 (after 2000-11-01), 2.98, 3.0 */
/*
newest gcc has new mangling scheme, that has problem
with generating name [instantiated] of template specialization like
_Integer_limits<_STLP_LONG_LONG, LONGLONG_MIN, LONGLONG_MAX, -1, true>
~~~~~~~~~~~~ ~~~~~~~~~~~~
Below is code that solve this problem.
- ptr
*/
_STLP_TEMPLATE_NULL
class numeric_limits<_STLP_LONG_LONG>
: public _STLP_PRIV _Numeric_limits_base<_STLP_LONG_LONG> {
public:
static _STLP_LONG_LONG (_STLP_CALL min) () _STLP_NOTHROW { return LONGLONG_MIN; }
static _STLP_LONG_LONG (_STLP_CALL max) () _STLP_NOTHROW { return LONGLONG_MAX; }
# if defined ( _STLP_STATIC_CONST_INIT_BUG)
enum {
# else
static const int
# endif
digits = ((int)((sizeof(_STLP_LONG_LONG) * (CHAR_BIT))) - 1),
digits10 = (digits * 301UL) / 1000,
radix = 2
# if ! defined (_STLP_STATIC_CONST_INIT_BUG)
;
static const bool
# else
,
# endif
is_specialized = true,
is_signed = true,
is_integer = true,
is_exact = true,
is_bounded = true,
is_modulo = true
# if defined (_STLP_STATIC_CONST_INIT_BUG)
}
# endif
;
};
_STLP_TEMPLATE_NULL
class numeric_limits<unsigned _STLP_LONG_LONG>
: public _STLP_PRIV _Numeric_limits_base<unsigned _STLP_LONG_LONG> {
public:
static unsigned _STLP_LONG_LONG (_STLP_CALL min) () _STLP_NOTHROW { return 0ULL; }
static unsigned _STLP_LONG_LONG (_STLP_CALL max) () _STLP_NOTHROW { return ULONGLONG_MAX; }
# if defined (_STLP_STATIC_CONST_INIT_BUG)
enum {
# else
static const int
# endif
digits = ((int)((sizeof(unsigned _STLP_LONG_LONG) * (CHAR_BIT)))),
digits10 = (digits * 301UL) / 1000,
radix = 2
# if ! defined (_STLP_STATIC_CONST_INIT_BUG)
;
static const bool
# else
,
# endif
is_specialized = true,
is_signed = false,
is_integer = true,
is_exact = true,
is_bounded = true,
is_modulo = true
# if defined ( _STLP_STATIC_CONST_INIT_BUG)
}
# endif
;
};
# endif /* __GNUC__ > 2000-11-01 */
#endif /* _STLP_LONG_LONG */
_STLP_MOVE_TO_PRIV_NAMESPACE
// Specializations for all built-in floating-point types.
template <class __dummy>
class _LimG {
public:
static float _STLP_CALL get_F_inf();
static float _STLP_CALL get_F_qNaN();
static float _STLP_CALL get_F_sNaN();
static double _STLP_CALL get_D_inf();
static double _STLP_CALL get_D_qNaN();
static double _STLP_CALL get_D_sNaN();
#if !defined (_STLP_NO_LONG_DOUBLE)
static long double _STLP_CALL get_LD_inf();
static long double _STLP_CALL get_LD_qNaN();
static long double _STLP_CALL get_LD_sNaN();
#endif
};
#if defined (_STLP_USE_TEMPLATE_EXPORT)
_STLP_EXPORT_TEMPLATE_CLASS _LimG<bool>;
#endif
_STLP_MOVE_TO_STD_NAMESPACE
_STLP_TEMPLATE_NULL
class numeric_limits<float>
: public _STLP_PRIV _Floating_limits<float,
FLT_MANT_DIG, // Binary digits of precision
FLT_DIG, // Decimal digits of precision
FLT_MIN_EXP, // Minimum exponent
FLT_MAX_EXP, // Maximum exponent
FLT_MIN_10_EXP, // Minimum base 10 exponent
FLT_MAX_10_EXP, // Maximum base 10 exponent
#if defined (_STLP_NO_IEC559_SUPPORT)
false, // do not conform to iec559
#else
true, // conforms to iec559
#endif
round_to_nearest> {
public:
static float (_STLP_CALL min) () _STLP_NOTHROW { return FLT_MIN; }
static float _STLP_CALL denorm_min() _STLP_NOTHROW { return FLT_MIN; }
static float (_STLP_CALL max) () _STLP_NOTHROW { _STLP_USING_VENDOR_CSTD return FLT_MAX; }
static float _STLP_CALL epsilon() _STLP_NOTHROW { return FLT_EPSILON; }
static float _STLP_CALL round_error() _STLP_NOTHROW { return 0.5f; } // Units: ulps.
static float _STLP_CALL infinity() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_F_inf(); }
static float _STLP_CALL quiet_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_F_qNaN(); }
static float _STLP_CALL signaling_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_F_sNaN(); }
};
_STLP_TEMPLATE_NULL
class numeric_limits<double>
: public _STLP_PRIV _Floating_limits<double,
DBL_MANT_DIG, // Binary digits of precision
DBL_DIG, // Decimal digits of precision
DBL_MIN_EXP, // Minimum exponent
DBL_MAX_EXP, // Maximum exponent
DBL_MIN_10_EXP, // Minimum base 10 exponent
DBL_MAX_10_EXP, // Maximum base 10 exponent
#if defined (_STLP_NO_IEC559_SUPPORT)
false, // do not conform to iec559
#else
true, // conforms to iec559
#endif
round_to_nearest> {
public:
static double (_STLP_CALL min)() _STLP_NOTHROW { return DBL_MIN; }
static double _STLP_CALL denorm_min() _STLP_NOTHROW { return DBL_MIN; }
static double (_STLP_CALL max)() _STLP_NOTHROW { _STLP_USING_VENDOR_CSTD return DBL_MAX; }
static double _STLP_CALL epsilon() _STLP_NOTHROW { return DBL_EPSILON; }
static double _STLP_CALL round_error() _STLP_NOTHROW { return 0.5; } // Units: ulps.
static double _STLP_CALL infinity() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_D_inf(); }
static double _STLP_CALL quiet_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_D_qNaN(); }
static double _STLP_CALL signaling_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_D_sNaN(); }
};
#if !defined (_STLP_NO_LONG_DOUBLE)
_STLP_TEMPLATE_NULL
class numeric_limits<long double>
: public _STLP_PRIV _Floating_limits<long double,
LDBL_MANT_DIG, // Binary digits of precision
LDBL_DIG, // Decimal digits of precision
LDBL_MIN_EXP, // Minimum exponent
LDBL_MAX_EXP, // Maximum exponent
LDBL_MIN_10_EXP,// Minimum base 10 exponent
LDBL_MAX_10_EXP,// Maximum base 10 exponent
false, // do not conform to iec559
round_to_nearest> {
public:
static long double (_STLP_CALL min) () _STLP_NOTHROW { _STLP_USING_VENDOR_CSTD return LDBL_MIN; }
static long double _STLP_CALL denorm_min() _STLP_NOTHROW { _STLP_USING_VENDOR_CSTD return LDBL_MIN; }
static long double (_STLP_CALL max) () _STLP_NOTHROW { _STLP_USING_VENDOR_CSTD return LDBL_MAX; }
static long double _STLP_CALL epsilon() _STLP_NOTHROW { return LDBL_EPSILON; }
static long double _STLP_CALL round_error() _STLP_NOTHROW { return 4; } // Units: ulps.
static long double _STLP_CALL infinity() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_LD_inf(); }
static long double _STLP_CALL quiet_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_LD_qNaN(); }
static long double _STLP_CALL signaling_NaN() _STLP_NOTHROW { return _STLP_PRIV _LimG<bool>::get_LD_sNaN(); }
};
#endif
// We write special values (Inf and NaN) as bit patterns and
// cast the the appropriate floating-point types.
_STLP_END_NAMESPACE
#if !defined (_STLP_LINK_TIME_INSTANTIATION)
# include <stl/_limits.c>
#endif
#endif
// Local Variables:
// mode:C++
// End: