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std::feholdexcept(3) C++ Standard Libary std::feholdexcept(3) NAME std::feholdexcept - std::feholdexcept Synopsis Defined in header <cfenv> int feholdexcept( std::fenv_t* envp ) (since C++11) First, saves the current floating-point environment to the object pointed to by envp (similar to std::fegetenv), then clears all floating-point status flags, and then installs the non-stop mode: future floating-point exceptions will not interrupt execution (will not trap), until the floating-point environment is restored by std::feupdateenv or std::fesetenv. This function may be used in the beginning of a subroutine that must hide the floating-point exceptions it may raise from the caller. If only some exceptions must be suppressed, while others must be reported, the non-stop mode is usually ended with a call to std::feupdateenv after clearing the unwanted excep- tions. Parameters envp - pointer to the object of type std::fenv_t where the floating- point environment will be stored Return value 0 on success, non-zero otherwise. See also feupdateenv restores the floating-point environment and raises the previously raise (C++11) exceptions (function) fegetenv saves or restores the current floating-point environment fesetenv (function) (C++11) FE_DFL_ENV default floating-point environment (C++11) (macro constant) http://cppreference.com 2022.07.31 std::feholdexcept(3)
NAME | Synopsis | Parameters | Return value | See also
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