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fegetexceptflag, fesetexceptflag

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< c‎ | numeric‎ | fenv
Revision as of 16:27, 1 July 2013 by P12bot (Talk | contribs)

Defined in header <<fenv.h>>
int fegetexceptflag( fexcept_t* flagp, int excepts );
(1) (since C99)
int fesetexceptflag( const fexcept_t* flagp, int excepts );
(2) (since C99)

1) Attempts to obtain the full contents of the floating-point exception flags that are listed in the bitmask argument excepts, which is a bitwise OR of the floating point exception macros.

2) Attempts to copy the full contents of the floating-point exception flags that are listed in excepts from flagp into the floating-point environment. Does not raise any exceptions, only modifies the flags.

The full contents of a floating-point exception flag is not necessarily a boolean value indicating whether the exception is raised or cleared. For example, it may be a struct which includes the boolean status and the address of the code that triggered the exception. These functions obtain all such content and obtain/store it in flagp in implementation-defined format.

Contents

Parameters

flagp - pointer to an fexcept_t object where the flags will be stored or read from
excepts - bitmask listing the exception flags to get/set

Return value

0 on success, non-zero otherwise.

Example

See also

C++ documentation for fegetexceptflag, fesetexceptflag