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std_limits.h: Move static const data members out of generic template... 

2002-03-08  Benjamin Kosnik  <bkoz@redhat.com>

	* include/std/std_limits.h: Move static const data members out of
	generic template, into base class __numeric_limits_base.
	* src/limits.cc: Add definitions.
	* config/linker-map.gnu: Add __numeric_limits_base.
	* testsuite/18_support/numeric_limits.cc: Declare test in scope.

From-SVN: r50447
This commit is contained in:
Benjamin Kosnik 2002-03-08 17:59:14 +00:00 committed by Benjamin Kosnik
parent 1e4e95d623
commit 8497934433
5 changed files with 71 additions and 130 deletions
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8
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,11 @@
2002-03-08 Benjamin Kosnik <bkoz@redhat.com>
* include/std/std_limits.h: Move static const data members out of
generic template, into base class __numeric_limits_base.
* src/limits.cc: Add definitions.
* config/linker-map.gnu: Add __numeric_limits_base.
* testsuite/18_support/numeric_limits.cc: Declare test in scope.
2002-03-07 Benjamin Kosnik <bkoz@redhat.com>
* include/bits/stl_alloc.h: Add extern implicit allocator

3
libstdc++-v3/config/linker-map.gnu
View File

@ -33,7 +33,8 @@ GLIBCPP_3.1 {
std::__throw_*;
std::__basic_file*;
std::__num_base*;
std::__timepunct*
std::__timepunct*;
std::__numeric_limits_base*
};
# Names not in an 'extern' block are mangled names.

156
libstdc++-v3/include/std/std_limits.h
View File

@ -908,140 +908,52 @@ namespace std
//
// The primary class traits
//
template<typename _Tp>
struct numeric_limits
{
static const bool is_specialized = false;
struct __numeric_limits_base
{
static const bool is_specialized = false;
static const int digits = 0;
static const int digits10 = 0;
static const bool is_signed = false;
static const bool is_integer = false;
static const bool is_exact = false;
static const int radix = 0;
static const int min_exponent = 0;
static const int min_exponent10 = 0;
static const int max_exponent = 0;
static const int max_exponent10 = 0;
static const bool has_infinity = false;
static const bool has_quiet_NaN = false;
static const bool has_signaling_NaN = false;
static const float_denorm_style has_denorm = denorm_absent;
static const bool has_denorm_loss = false;
static const bool is_iec559 = false;
static const bool is_bounded = false;
static const bool is_modulo = false;
static const bool traps = false;
static const bool tinyness_before = false;
static const float_round_style round_style = round_toward_zero;
};
template<typename _Tp>
struct numeric_limits : public __numeric_limits_base
{
static _Tp min() throw() { return static_cast<_Tp>(0); }
static _Tp max() throw() { return static_cast<_Tp>(0); }
static const int digits = 0;
static const int digits10 = 0;
static const bool is_signed = false;
static const bool is_integer = false;
static const bool is_exact = false;
static const int radix = 0;
static _Tp epsilon() throw() { return static_cast<_Tp>(0); }
static _Tp round_error() throw() { return static_cast<_Tp>(0); }
static const int min_exponent = 0;
static const int min_exponent10 = 0;
static const int max_exponent = 0;
static const int max_exponent10 = 0;
static const bool has_infinity = false;
static const bool has_quiet_NaN = false;
static const bool has_signaling_NaN = false;
static const float_denorm_style has_denorm = denorm_absent;
static const bool has_denorm_loss = false;
static _Tp infinity() throw() { return static_cast<_Tp>(0); }
static _Tp quiet_NaN() throw() { return static_cast<_Tp>(0); }
static _Tp signaling_NaN() throw() { return static_cast<_Tp>(0); }
static _Tp denorm_min() throw() { return static_cast<_Tp>(0); }
static const bool is_iec559 = false;
static const bool is_bounded = false;
static const bool is_modulo = false;
static const bool traps = false;
static const bool tinyness_before = false;
static const float_round_style round_style = round_toward_zero;
};
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_specialized;
template<typename _Tp>
const int
numeric_limits<_Tp>::digits;
template<typename _Tp>
const int
numeric_limits<_Tp>::digits10;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_signed;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_integer;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_exact;
template<typename _Tp>
const int
numeric_limits<_Tp>::radix;
template<typename _Tp>
const int
numeric_limits<_Tp>::min_exponent;
template<typename _Tp>
const int
numeric_limits<_Tp>::min_exponent10;
template<typename _Tp>
const int
numeric_limits<_Tp>::max_exponent;
template<typename _Tp>
const int
numeric_limits<_Tp>::max_exponent10;
template<typename _Tp>
const bool
numeric_limits<_Tp>::has_infinity;
template<typename _Tp>
const bool
numeric_limits<_Tp>::has_quiet_NaN;
template<typename _Tp>
const bool
numeric_limits<_Tp>::has_signaling_NaN;
template<typename _Tp>
const float_denorm_style
numeric_limits<_Tp>::has_denorm;
template<typename _Tp>
const bool
numeric_limits<_Tp>::has_denorm_loss;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_iec559;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_bounded;
template<typename _Tp>
const bool
numeric_limits<_Tp>::is_modulo;
template<typename _Tp>
const bool
numeric_limits<_Tp>::traps;
template<typename _Tp>
const bool
numeric_limits<_Tp>::tinyness_before;
template<typename _Tp>
const float_round_style
numeric_limits<_Tp>::round_style;
// Now there follow 15 explicit specializations. Yes, 15. Make sure
// you get the count right.
// you get the count right.
template<>
struct numeric_limits<bool>
{

25
libstdc++-v3/src/limits.cc
View File

@ -1,6 +1,6 @@
// Static data members of -*- C++ -*- numeric_limits classes
// Copyright (C) 1999, 2001 Free Software Foundation, Inc.
// Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -38,6 +38,29 @@
namespace std
{
const bool __numeric_limits_base::is_specialized;
const int __numeric_limits_base::digits;
const int __numeric_limits_base::digits10;
const bool __numeric_limits_base::is_signed;
const bool __numeric_limits_base::is_integer;
const bool __numeric_limits_base::is_exact;
const int __numeric_limits_base::radix;
const int __numeric_limits_base::min_exponent;
const int __numeric_limits_base::min_exponent10;
const int __numeric_limits_base::max_exponent;
const int __numeric_limits_base::max_exponent10;
const bool __numeric_limits_base::has_infinity;
const bool __numeric_limits_base::has_quiet_NaN;
const bool __numeric_limits_base::has_signaling_NaN;
const float_denorm_style __numeric_limits_base::has_denorm;
const bool __numeric_limits_base::has_denorm_loss;
const bool __numeric_limits_base::is_iec559;
const bool __numeric_limits_base::is_bounded;
const bool __numeric_limits_base::is_modulo;
const bool __numeric_limits_base::traps;
const bool __numeric_limits_base::tinyness_before;
const float_round_style __numeric_limits_base::round_style;
// bool
const bool numeric_limits<bool>::is_specialized;
const int numeric_limits<bool>::digits;

9
libstdc++-v3/testsuite/18_support/numeric_limits.cc
View File

@ -55,6 +55,7 @@ DEFINE_EXTREMA(long double, LDBL_MIN, LDBL_MAX);
template<typename T>
void test_extrema()
{
bool test = true;
VERIFY( extrema<T>::min == std::numeric_limits<T>::min() );
VERIFY( extrema<T>::max == std::numeric_limits<T>::max() );
}
@ -73,6 +74,7 @@ template<>
void test_extrema<long double>()
{
typedef long double T;
bool test = true;
VERIFY( (extrema<T>::min - std::numeric_limits<T>::min())
< std::numeric_limits<T>::epsilon() );
VERIFY( (std::numeric_limits<T>::min() - extrema<T>::min)
@ -92,6 +94,7 @@ void test_extrema<long double>()
void test_sign()
{
bool test = true;
VERIFY( std::numeric_limits<char>::is_signed == char_is_signed );
VERIFY( std::numeric_limits<signed char>::is_signed == true );
VERIFY( std::numeric_limits<unsigned char>::is_signed == false );
@ -230,9 +233,3 @@ int main()
return 0;
}