feupdateenv - cppreference.com (original) (raw)
| | | | | ---------------------------------------- | | ----------- | | int feupdateenv( const fenv_t* envp ); | | (since C99) |
First, remembers the currently raised floating-point exceptions, then restores the floating-point environment from the object pointed to by envp (similar to fesetenv), then raises the floating-point exceptions that were saved.
This function may be used to end the non-stop mode established by an earlier call to feholdexcept.
[edit] Parameters
| envp | - | pointer to the object of type fenv_t set by an earlier call to feholdexcept or fegetenv or equal to FE_DFL_ENV |
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[edit] Return value
0 on success, non-zero otherwise.
[edit] Example
Output:
current exceptions raised: FE_INVALID In x2(): x = inf current exceptions raised: FE_INEXACT FE_OVERFLOW x2(DBL_MAX) = inf current exceptions raised: FE_INVALID FE_OVERFLOW
[edit] References
C11 standard (ISO/IEC 9899:2011):
7.6.4.4 The feupdateenv function (p: 214-215)
C99 standard (ISO/IEC 9899:1999):
7.6.4.4 The feupdateenv function (p: 195-196)