Floating-Point Exceptions

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Floating-point exceptions that can occur in Delphi or C++ applications are listed in the following table.

Exception Class	Description
System.SysUtils.EInvalidOp	Undefined floating-point instruction or invalid mathematical operation. For example, Sqrt(-1), ArcTan(10), 0/0, or Partial Loss of Precision.
System.SysUtils.EZeroDivide	Floating-Point Exception: Divide by 0
System.SysUtils.EOverflow	Floating-Point Exception: Overflow
System.SysUtils.EUnderflow	Floating-Point Exception: Underflow

To mask these exceptions, use the SetExceptionMask procedure. See also: GetExceptionMask, SetExceptions, and TArithmeticException.

Note: From RAD Studio Athens (R120), all of the floating-point-related exception masks will be turned ON. The applications will no longer raise Floating Point exceptions on all platforms as default.

Topics

• Floating-Point Exception: Divide by 0, Domain or Overflow
• Floating-Point Exception: Partial Loss of Precision or Underflow
• Floating-Point Exception: Stack Fault

See Also

• System.FSetExceptFlag
• System.FGetExceptFlag
• System.FSetExceptMask
• System.FGetExceptMask
• System.SysUtils.EMathError
• System.Math.SetExceptionMask
• System.Math.GetExceptionMask
• About Floating-Point Arithmetic
• Exceptions (Delphi)