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# fegetenv, fesetenv

From cppreference.com
< c‎ | numeric‎ | fenv

Defined in header `<<fenv.h>>` |  |
int fegetenv( fenv_t* envp ); | (1) | (since C99)
int fesetenv( const fenv_t* envp ); | (2) | (since C99)

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)

### [edit] Parameters

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

### [edit] Return value

​0​ on success, non-zero otherwise.

### [edit] Example

| This section is incomplete Reason: no example

### [edit] See also

feholdexcept (C99) | saves the environment, clears all status flags and ignores all future errors (function) [edit]
feupdateenv (C99) | restores the floating-point environment and raises the previously raise exceptions (function) [edit]
FE_DFL_ENV (C99) | default floating-point environment (macro constant) [edit]
C++ documentation for fegetenv, fesetenv

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