std::fegetenv, std::fesetenv

From cppreference.com

Defined in header `<cfenv>`

int fegetenv( std::fenv_t* envp )	(1)	(since C++11)

int fesetenv( const std::fenv_t* envp );	(2)	(since C++11)

1) Attempts to store the status of the floating-point environment in the object pointed to by envp.

2) Attempts to establish the floating-point environment from the object pointed to by envp. The value of that object must be previously obtained by a call to std::feholdexcept or std::fegetenv or be a floating-point macro constant. If any of the floating-point status flags are set in envp, they become set in the environment (and are then testable with std::fetestexcept), but the corresponding floating-point exceptions are not raised (execution continues uninterrupted)

[edit] Parameters

envp

-

pointer to the object of type std::fenv_t which holds the status of the floating-point environment

[edit] Return value

0 on success, non-zero otherwise.

[edit] See also


feholdexcept (C++11)	saves the environment, clears all status flags and ignores all future errors (function)

feupdateenv (C++11)	restores the floating-point environment and raises the previously raise exceptions (function)

FE_DFL_ENV (C++11)	default floating-point environment (macro constant)

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