@node math_errhandling
@subsection @code{math_errhandling}
@findex math_errhandling

ISO C23 specification:@* @url{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf} section 7.12.1

Documentation:@* @uref{https://www.kernel.org/doc/man-pages/online/pages/man7/math_error.7.html,,man math_error}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This macro is missing on some platforms:
NetBSD 10.0, mingw.
@item
This macro does not describe the error behaviour
of elementary arithmetic operations (+, -, *, /)
and of mathematical operations for which the compiler emits inline code
(such as @code{sqrt} on some CPUs).
@item
This macro does not describe the error behaviour of functions
such as @code{strtod}.
@item
For mathematical operations in general, it is a safer bet to look
at the exceptions set in the floating-point environment
(by calling @code{feclearexcept (FE_ALL_EXCEPT)} before the operation
and @code{fetestexcept} after the operation),
regardless of @code{math_errhandling}.
@end itemize
