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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libstdc++-v3/] [config/] [locale/] [generic/] [c_locale.cc] - Rev 424
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// Wrapper for underlying C-language localization -*- C++ -*- // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 // 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 // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. // // ISO C++ 14882: 22.8 Standard locale categories. // // Written by Benjamin Kosnik <bkoz@redhat.com> #include <cerrno> // For errno #include <cmath> // For isinf, finite, finitef, fabs #include <cstdlib> // For strof, strtold #include <cstring> #include <cstdio> #include <locale> #include <limits> #include <cstddef> #ifdef _GLIBCXX_HAVE_IEEEFP_H #include <ieeefp.h> #endif _GLIBCXX_BEGIN_NAMESPACE(std) template<> void __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err, const __c_locale&) throw() { // Assumes __s formatted for "C" locale. char* __old = setlocale(LC_ALL, NULL); const size_t __len = strlen(__old) + 1; char* __sav = new char[__len]; memcpy(__sav, __old, __len); setlocale(LC_ALL, "C"); char* __sanity; bool __overflow = false; #if !__FLT_HAS_INFINITY__ errno = 0; #endif #ifdef _GLIBCXX_HAVE_STRTOF __v = strtof(__s, &__sanity); #else double __d = strtod(__s, &__sanity); __v = static_cast<float>(__d); #ifdef _GLIBCXX_HAVE_FINITEF if (!finitef (__v)) __overflow = true; #elif defined (_GLIBCXX_HAVE_FINITE) if (!finite (static_cast<double> (__v))) __overflow = true; #elif defined (_GLIBCXX_HAVE_ISINF) if (isinf (static_cast<double> (__v))) __overflow = true; #else if (fabs(__d) > numeric_limits<float>::max()) __overflow = true; #endif #endif // _GLIBCXX_HAVE_STRTOF // _GLIBCXX_RESOLVE_LIB_DEFECTS // 23. Num_get overflow result. if (__sanity == __s || *__sanity != '\0') { __v = 0.0f; __err = ios_base::failbit; } else if (__overflow #if __FLT_HAS_INFINITY__ || __v == numeric_limits<float>::infinity() || __v == -numeric_limits<float>::infinity() #else || ((__v > 1.0f || __v < -1.0f) && errno == ERANGE) #endif ) { if (__v > 0.0f) __v = numeric_limits<float>::max(); else __v = -numeric_limits<float>::max(); __err = ios_base::failbit; } setlocale(LC_ALL, __sav); delete [] __sav; } template<> void __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err, const __c_locale&) throw() { // Assumes __s formatted for "C" locale. char* __old = setlocale(LC_ALL, NULL); const size_t __len = strlen(__old) + 1; char* __sav = new char[__len]; memcpy(__sav, __old, __len); setlocale(LC_ALL, "C"); char* __sanity; #if !__DBL_HAS_INFINITY__ errno = 0; #endif __v = strtod(__s, &__sanity); // _GLIBCXX_RESOLVE_LIB_DEFECTS // 23. Num_get overflow result. if (__sanity == __s || *__sanity != '\0') { __v = 0.0; __err = ios_base::failbit; } else if ( #if __DBL_HAS_INFINITY__ __v == numeric_limits<double>::infinity() || __v == -numeric_limits<double>::infinity()) #else (__v > 1.0 || __v < -1.0) && errno == ERANGE) #endif { if (__v > 0.0) __v = numeric_limits<double>::max(); else __v = -numeric_limits<double>::max(); __err = ios_base::failbit; } setlocale(LC_ALL, __sav); delete [] __sav; } template<> void __convert_to_v(const char* __s, long double& __v, ios_base::iostate& __err, const __c_locale&) throw() { // Assumes __s formatted for "C" locale. char* __old = setlocale(LC_ALL, NULL); const size_t __len = strlen(__old) + 1; char* __sav = new char[__len]; memcpy(__sav, __old, __len); setlocale(LC_ALL, "C"); #if !__LDBL_HAS_INFINITY__ errno = 0; #endif #if defined(_GLIBCXX_HAVE_STRTOLD) && !defined(_GLIBCXX_HAVE_BROKEN_STRTOLD) char* __sanity; __v = strtold(__s, &__sanity); // _GLIBCXX_RESOLVE_LIB_DEFECTS // 23. Num_get overflow result. if (__sanity == __s || *__sanity != '\0') #else typedef char_traits<char>::int_type int_type; int __p = sscanf(__s, "%Lf", &__v); if (!__p || static_cast<int_type>(__p) == char_traits<char>::eof()) #endif { __v = 0.0l; __err = ios_base::failbit; } else if ( #if __LDBL_HAS_INFINITY__ __v == numeric_limits<long double>::infinity() || __v == -numeric_limits<long double>::infinity()) #else (__v > 1.0l || __v < -1.0l) && errno == ERANGE) #endif { if (__v > 0.0l) __v = numeric_limits<long double>::max(); else __v = -numeric_limits<long double>::max(); __err = ios_base::failbit; } setlocale(LC_ALL, __sav); delete [] __sav; } void locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s, __c_locale) { // Currently, the generic model only supports the "C" locale. // See http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html __cloc = NULL; if (strcmp(__s, "C")) __throw_runtime_error(__N("locale::facet::_S_create_c_locale " "name not valid")); } void locale::facet::_S_destroy_c_locale(__c_locale& __cloc) { __cloc = NULL; } __c_locale locale::facet::_S_clone_c_locale(__c_locale&) throw() { return __c_locale(); } __c_locale locale::facet::_S_lc_ctype_c_locale(__c_locale, const char*) { return __c_locale(); } _GLIBCXX_END_NAMESPACE _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] = { "LC_CTYPE", "LC_NUMERIC", "LC_TIME", "LC_COLLATE", "LC_MONETARY", "LC_MESSAGES" }; _GLIBCXX_END_NAMESPACE _GLIBCXX_BEGIN_NAMESPACE(std) const char* const* const locale::_S_categories = __gnu_cxx::category_names; _GLIBCXX_END_NAMESPACE // XXX GLIBCXX_ABI Deprecated #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT #define _GLIBCXX_LDBL_COMPAT(dbl, ldbl) \ extern "C" void ldbl (void) __attribute__ ((alias (#dbl))) _GLIBCXX_LDBL_COMPAT(_ZSt14__convert_to_vIdEvPKcRT_RSt12_Ios_IostateRKPi, _ZSt14__convert_to_vIeEvPKcRT_RSt12_Ios_IostateRKPi); #endif // _GLIBCXX_LONG_DOUBLE_COMPAT