The IsProcessorFeaturePresent function determines whether the specified processor feature is supported by at least one processor on the current machine.
BOOL IsProcessorFeaturePresent(
DWORD ProcessorFeature // specifies the processor feature
);
| Value | Meaning |
|---|---|
| PF_FLOATING_POINT_PRECISION_ ERRATA |
In rare circumstances, a floating-point precision error can occur (Pentium). |
| PF_FLOATING_POINT_EMULATED | Floating-point operations are emulated using a software emulator. |
| PF_COMPARE_EXCHANGE_DOUBLE | The compare and exchange double operation is available (Pentium, MIPS, and Alpha). |
| PF_MMX_INSTRUCTIONS_AVAILABLE | The MMX instruction set is available. |
| PF_ALPHA_BYTE_INSTRUCTIONS | Windows NT 5.0 and later: The Alpha byte load and byte store instructions are available. |
If at least one of the processors supports the feature, the return value is nonzero.
If no processor supports the feature, the return value is zero.
Windows NT: Requires version 4.0 or later.
Windows: Unsupported.
Windows CE: Unsupported.
Header: Declared in winbase.h.
Import Library: Use kernel32.lib.
System Information Overview, System Information Functions