Microsoft Specific
Generates the rdtsc instruction, which returns the processor time stamp. The processor time stamp records the number of clock cycles since the last reset.
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unsigned __int64 __rdtsc(void); |
Return Value
A 64-bit unsigned integer representing a tick count.
Requirements
|
Intrinsic
|
Architecture
|
| __rdtsc | x86, x64 |
Header file <intrin.h>
Remarks
This routine is only available as an intrinsic.
Example
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// rdtsc.cpp
// processor: x86, x64
#include <stdio.h>
#include <intrin.h>
#pragma intrinsic(__rdtsc)
int main()
{
unsigned __int64 i;
i = __rdtsc();
printf_s("%I64d ticks\n", i);
} |
Sample Output
3363423610155519 ticks
END Microsoft Specific
See Also