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The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.
The latest version of this topic can be found at __movsb.
Microsoft Specific**
Generates a Move String (rep movsb) instruction.
Syntax
void __movsb(
unsigned char* Destination,
unsigned const char* Source,
size_t Count
);
Parameters
[out] Destination
A pointer to the destination of the copy.
[in] Source
A pointer to the source of the copy.
[in] Count
The number of bytes to copy.
Requirements
| Intrinsic | Architecture |
|---|---|
__movsb |
x86, x64 |
Header file <intrin.h>
Remarks
The result is that the first Count bytes pointed to by Source are copied to the Destination string.
This routine is only available as an intrinsic.
Example
// movsb.cpp
// processor: x86, x64
#include <stdio.h>
#include <intrin.h>
#pragma intrinsic(__movsb)
int main()
{
unsigned char s1[100];
unsigned char s2[100] = "A big black dog.";
__movsb(s1, s2, 100);
printf_s("%s %s", s1, s2);
}
A big black dog. A big black dog.