fesetenv()

Arguments:

envp

A pointer to a fenv_t object where the function can copy the environment from. You must have obtained this value from a previous call to feholdexcept() or fegetenv(), or 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 fesetenv() function sets the current floating-point environment from the object that envp points to. If any of the floating-point status flags are set in envp, they're set in the environment (and you can then use fetestexcept() to test for them), but the corresponding floating-point exceptions aren't raised.

Returns:

0

Classification:

C99, POSIX 1003.1