__stosb
Microsoft Specific
Generates a store string instruction (rep stosb).
void __stosb(
unsigned char* Dest,
unsigned char Data,
size_t Count
);
Parameters
- [out] Dest
The destination of the operation.
- [in] Data
The data to store.
- [in] Count
The length of the block of bytes to write.
Requirements
| Intrinsic | Architecture |
|---|---|
__stosb |
x86, x64 |
Header file <intrin.h>
Remarks
The result is that the character Data is written into a block of Count bytes in the Dest string.
This routine is only available as an intrinsic.
Example
// stosb.c
// processor: x86, x64
#include <stdio.h>
#include <intrin.h>
#pragma intrinsic(__stosb)
int main()
{
unsigned char c = 0x40; /* '@' character */
unsigned char s[] = "*********************************";
printf_s("%s\n", s);
__stosb((unsigned char*)s+1, c, 6);
printf_s("%s\n", s);
}
Output
********************************* *@@@@@@**************************