Page 200 - C-Language

• The default value of the floating-point environment access switch (7.6.1/2).

• The representation of the floating-point status flags recorded by fegetexceptflag() (7.6.2.2/1
).

• Whether the feraiseexcept() function additionally raises the "inexact" floating-point exception
whenever it raises the "overflow" or "underflow" floating-point exception (7.6.2.3/2).

Locale-related functions

• The locale strings other than "C" supported by setlocale() (7.11.1.1/3).

Math functions

• The types represented by float_t and double_t when the FLT_EVAL_METHOD macro has a value
different from 0, 1, and 2 (7.12/2).

• Any supported floating-point classifications beyond those defined by the standard (7.12/6).

• The value returned by the math.h functions in the event of a domain error (7.12.1/2).

• The value returned by the math.h functions in the event of a pole error (7.12.1/3).

• The value returned by the math.h functions when the result underflows, and aspects of
whether errno is set to ERANGE and whether a floating-point exception is raised under those
circumstances (7.12.1/6).

• The default value of the FP-contraction switch (7.12.2/2).

• Whether the fmod() functions return 0 or raise a domain error when their second argument is
0 (7.12.10.1/3).

• Whether the remainder() functions return 0 or raise a domain error when their second
argument is 0 (7.12.10.2/3).

• The number of significant bits in the quotient moduli computed by the remquo() functions (
7.12.10.3/2).

• Whether the remquo() functions return 0 or raise a domain error when their second argument
is 0 (7.12.10.3/3).

Signals

• The complete set of supported signals, their semantics, and their default handling (7.14/4).

• When a signal is raised and there is a custom handler associated with that signal, which
signals, if any, are blocked for the duration of the execution of the handler (7.14.1.1/3).

• Which signals other than SIGFPE, SIGILL, and SIGSEGV cause the behavior upon returning from
a custom signal handler to be undefined (7.14.1.1/3).

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