fegetenv, fesetenv

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Defined in header <<fenv.h>>

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<td >
int fegetenv( fenv_t* envp );

<td > (1) </td> <td > (since C99) </td> </tr> <tr class="t-dcl ">

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int fesetenv( const fenv_t* envp );

<td > (2) </td> <td > (since C99) </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 feholdexcept or 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 fetestexcept), but the corresponding floating-point exceptions are not raised (execution continues uninterrupted)



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

Return value

0 on success, non-zero otherwise.


See also

Template:c/numeric/fenv/dcl list feholdexceptTemplate:c/numeric/fenv/dcl list feupdateenvTemplate:c/numeric/fenv/dcl list FE DFL ENV
C++ documentation for fegetenv, fesetenv