| 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) |
Manages the status of the floating-point environment.
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
| (C++11) | saves the environment, clears all status flags and ignores all future errors (function) |
| (C++11) | restores the floating-point environment and raises the previously raise exceptions (function) |
| (C++11) | default floating-point environment (macro constant) |
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