diff options
Diffstat (limited to 'libstdc++-v3/include/tr1/random')
| -rw-r--r-- | libstdc++-v3/include/tr1/random | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/libstdc++-v3/include/tr1/random b/libstdc++-v3/include/tr1/random index 02a7ae7bc85..907a1000fd3 100644 --- a/libstdc++-v3/include/tr1/random +++ b/libstdc++-v3/include/tr1/random @@ -35,21 +35,21 @@ #ifndef _TR1_RANDOM #define _TR1_RANDOM 1 -#include <bits/stl_algobase.h> -#include <bits/concept_check.h> #include <cmath> -#include <debug/debug.h> -#include <iterator> +#include <cstdio> +#include <cstdlib> +#include <string> #include <iosfwd> #include <limits> #include <tr1/type_traits> #include <tr1/cmath> -#include <fstream> #include <ext/type_traits.h> +#include <bits/concept_check.h> +#include <debug/debug.h> namespace std { -_GLIBCXX_BEGIN_NAMESPACE(tr1) +_GLIBCXX_BEGIN_NAMESPACE(_GLIBCXX_TR1) // [5.1] Random number generation @@ -1421,14 +1421,13 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1) random_device(const std::string& __token = "/dev/urandom") { if ((__token != "/dev/urandom" && __token != "/dev/random") - || !_M_filebuf.open(__token.c_str(), - std::ios_base::in | std::ios_base::binary)) + || !(_M_file = std::fopen(__token.c_str(), "rb"))) std::__throw_runtime_error(__N("random_device::" "random_device(const std::string&)")); } ~random_device() - { _M_filebuf.close(); } + { std::fclose(_M_file); } #else @@ -1474,7 +1473,8 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1) { #ifdef _GLIBCXX_USE_RANDOM_TR1 result_type __ret; - _M_filebuf.sgetn(reinterpret_cast<char*>(&__ret), sizeof(result_type)); + std::fread(reinterpret_cast<void*>(&__ret), sizeof(result_type), + 1, _M_file); return __ret; #else return _M_mt(); @@ -1486,7 +1486,7 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1) void operator=(const random_device&); #ifdef _GLIBCXX_USE_RANDOM_TR1 - std::filebuf _M_filebuf; + FILE* _M_file; #else mt19937 _M_mt; #endif |