feupdateenv()

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

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:

• If you want only selected processes to run with the SVE version, you can include both libraries in your OS image and use the -l m or -l m-sve option to qcc to link explicitly against the appropriate one.
• If you want all processes to use the SVE version, include libm-sve.so in your OS image and set up a symbolic link from libm.so to libm-sve.so. Use the -l m option to qcc to link against the library.

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