System.FSetExceptMask

• Up to Parent: System

Delphi

function FSetExceptMask(NewMasks: UInt32; ExceptMasks: UInt32): UInt32;

C++

extern DELPHI_PACKAGE unsigned __fastcall FSetExceptMask(unsigned NewMasks, unsigned ExceptMasks = (unsigned)(0x3f));

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.pas System.hpp	System	System

Description

Sets the floating point exception mask flags.

FSetExceptMask sets mask flags specified by the ExceptMasks parameter.

NewMasks represents a combination of the following values:

Constant
femINEXACT
femUNDERFLOW
femOVERFLOW
femDIVBYZERO
femINVALID

FSetExceptMask returns the previous value of the unit's floating point exception mask flag specified by ExceptMasks.

Excepts specifies which exception masks are changed and returned. For example, if ExceptMasks is femDIVBYZERO or femINVALID, only these masks are changed using NewMasks while FSetExceptMask only returns the previous status of femDIVBYZERO and femINVALID.

Notes:

• The NewMasks, ExceptMasks parameter and the function return values are different for each platform.

• In order to keep compatibility between different platforms, consider using SetExceptionMask and TArithmeticExceptions.

See Also

• System.FGetExceptMask
• System.Math.SetExceptionMask
• System.FSetExceptFlag
• Floating-Point Exceptions