diff options
Diffstat (limited to 'boost/numeric/interval/detail/msvc_rounding_control.hpp')
| -rw-r--r-- | boost/numeric/interval/detail/msvc_rounding_control.hpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/boost/numeric/interval/detail/msvc_rounding_control.hpp b/boost/numeric/interval/detail/msvc_rounding_control.hpp index d36e80242..ccf1e8b47 100644 --- a/boost/numeric/interval/detail/msvc_rounding_control.hpp +++ b/boost/numeric/interval/detail/msvc_rounding_control.hpp @@ -88,7 +88,20 @@ struct x86_rounding static void get_rounding_mode(rounding_mode& mode) { mode = msvc2hard(_control87(0, 0)); } static void set_rounding_mode(const rounding_mode mode) - { _control87(hard2msvc(mode), _MCW_EM | _MCW_RC | _MCW_PC | _MCW_IC); } + { + _control87(hard2msvc(mode), + _MCW_EM | _MCW_RC +#if !defined(_M_AMD64) && !defined(_M_ARM) + // x64 ignores _MCW_PC and _MCW_IC, and the Debug CRT library actually + // asserts when these are passed to _control87. + // MSDN says on '_control87' that changing precision (_MCW_PC) or + // infinity (_MCW_IC) handling is not supported on the ARM and x64 + // architectures and that _control87 raises an assertion + // and the invalid parameter handler is invoked. + | _MCW_PC | _MCW_IC +#endif + ); + } static double to_int(const double& x) { return rint(x); } }; |