Difference between revisions of "cpp/numeric/fenv/feenv"
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Revision as of 13:43, 15 June 2012
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<td><cfenv>
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<td ><td > (1) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">
<td ><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.
