Edit

_set_controlfp

  • Article

Sets the floating-point control word.

Syntax

void __cdecl _set_controlfp(
    unsigned int newControl,
    unsigned int mask
);

Parameters

newControl
New control-word bit values.

mask
Mask for new control-word bits to set.

Return value

None.

Remarks

The _set_controlfp function is similar to _control87, but it only sets the floating-point control word to newControl. The bits in the values indicate the floating-point control state. The floating-point control state allows the program to change the precision, rounding, and infinity modes in the floating-point math package. You can also mask or unmask floating-point exceptions using _set_controlfp. For more information, see _control87, _controlfp, __control87_2.

This function is deprecated when compiling with /clr (Common Language Runtime Compilation) because the common language runtime only supports the default floating-point precision.

Requirements

Routine Required header Compatibility
_set_controlfp <float.h> x86 processor only

For more compatibility information, see Compatibility.

See also

Math and floating-point support
_clear87, _clearfp
_status87, _statusfp, _statusfp2