System.Get8087CW
Delphi
function Get8087CW: Word;
C++
extern DELPHI_PACKAGE Word __fastcall Get8087CW(void);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | System.pas System.hpp |
System | System |
Description
Returns the value of the 8087 control word.
Use Get8087CW to determine the current value of the FPU (floating-point unit) control word.
On 32-bit Windows: This control word controls the precision of floating-point calculations, the rounding mode, and whether certain floating-point operations trigger exceptions. See the Intel processors' documentation for details.
On 64-bit Windows: This control word does not control floating-point operations, because the SSE register is used for floating point in 64-bit mode, instead of the FPU. However the FPU is still present in 64-bit mode, so Get8087CW returns the control word value, as in 32-bit mode.
See Also
- System.NoErrMsg
- System.Math.SetExceptionMask
- System.Math.SetPrecisionMode
- System.Math.SetRoundMode
- System.Set8087CW
- System.SetMXCSR
- Floating-Point Number Control Routines