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std::fegetenv, std::fesetenv

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< cpp‎ | numeric‎ | fenv
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Defined in header <cfenv>
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<td >
int fegetenv( std::fenv_t* envp )
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<td > (1) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

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int fesetenv( const std::fenv_t* envp );
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<td > (2) </td> <td > (since C++11) </td> </tr> Template:ddcl list end

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)

Parameters

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

Return value

0 on success, non-zero otherwise.

See also

Template:cpp/numeric/fenv/dcl list feholdexceptTemplate:cpp/numeric/fenv/dcl list feupdateenvTemplate:cpp/numeric/fenv/dcl list FE DFL ENV