feupdateenv()

Restore the floating-point environment and raise any previously raised exceptions

Synopsis:

#include <fenv.h>

int feupdateenv( const fenv_t *envp );

Arguments:

envp
A pointer to a fenv_t object that holds a previously saved floating-point environment. You can set this by calling feholdexcept() or fesetenv(), or it can be FE_DFL_ENV, which points to a full copy of the default floating-point environment (i.e., the environment as loaded at program startup).

Library:

libm
The general-purpose math library.
libm-sve
(QNX Neutrino 7.1 or later) A library that optimizes the code for ARMv8.2 chips that have Scalable Vector Extension hardware.

Your system requirements will determine how you should work with these libraries:

Note: Compile your program with the -fno-builtin option to prevent the compiler from using a built-in version of the function.

Description:

The feupdateenv() function restores the floating-point environment the object that envp points to, and then raises any previously raised exceptions that were saved.

You can use this function to end the nonstop mode that was earlier installed by feholdexcept().

Returns:

0

Classification:

C99, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler Yes
Signal handler Yes
Thread Yes