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Showing content from https://en.cppreference.com/w/cpp/language/../algorithm/../numeric/fenv/feraiseexcept.html below:

int feraiseexcept( int excepts );

(since C++11)

Attempts to raise all floating point exceptions listed in excepts (a bitwise OR of the floating point exception macros). If one of the exceptions is FE_OVERFLOW or FE_UNDERFLOW, this function may additionally raise FE_INEXACT. The order in which the exceptions are raised is unspecified, except that FE_OVERFLOW and FE_UNDERFLOW are always raised before FE_INEXACT.

[edit] Parameters excepts - bitmask listing the exception flags to raise [edit] Return value

â0â if all listed exceptions were raised, non-zero value otherwise.

[edit] Example

Output:

Raising divbyzero and underflow simultaneously succeeds and results in
division by zero
underflow

[edit] See also

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