System.Math.ClearExceptions

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Delphi

procedure ClearExceptions(RaisePending: Boolean; ExceptionFlags: TArithmeticExceptions);

C++

extern DELPHI_PACKAGE void __fastcall ClearExceptions(bool RaisePending = true, TArithmeticExceptions ExceptionFlags = (TArithmeticExceptions() << TArithmeticException::exInvalidOp << TArithmeticException::exZeroDivide << TArithmeticException::exOverflow ));

Properties

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

Description

Clears floating-point number's cumulative exception flags and raises cumulative floating-point number's exceptions if RaisePending is True.

Some floating-point hardware (for example ARM) set the cumulative floating-point exception status bits, but the hardware does not raise floating-point exceptions.

If RaisePending is True, any pending floating point exceptions specified by ExceptionFlags cause the corresponding error to be raised. ClearExceptions clears the cumulative exception flags specified by ExceptionFlags in the floating-point number hardware.

By default, RaisePending is True. ClearExceptions with RaisePending is True is the same as RaiseExceptions.

If ExceptionFlags is empty, ClearExceptions does not do anything.

ClearExceptions is platform independent.

By default, ExceptionFlags is DefaultExceptionFlags:

DefaultExceptionFlags = [
 TArithmeticException.exInvalidOp,
 TArithmeticException.exZeroDivide,
 TArithmeticException.exOverflow];

See Also

• System.Math.TArithmeticExceptions
• System.Math.RaiseExceptions
• System.Math.GetExceptionMask
• System.Math.SetExceptionMask
• System.Math.TArithmeticException

• Floating-Point Number Control Routines
• About Floating-Point Arithmetic