feholdexcept - save current floating-point environment
int feholdexcept(fenv_t *envp);
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO C standard.
The feholdexcept() function shall save the current floating-point environment in the object pointed to by envp, clear the floating-point status flags, and then install a non-stop (continue on floating-point exceptions) mode, if available, for all floating-point exceptions.
The feholdexcept() function shall return zero if and only if non-stop floating-point exception handling was successfully installed.
No errors are defined.
The feholdexcept() function should be effective on typical IEC 60559:1989 standard implementations which have the default non-stop mode and at least one other mode for trap handling or aborting. If the implementation provides only the non-stop mode, then installing the non-stop mode is trivial.
First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.
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