bcopy()

Copy a number of characters in one string to another

Synopsis:

#include <strings.h>

void bcopy( const void *src,
            void *dst,
            size_t n );

Arguments:

src: The string you want to copy.
dst: An existing array into which you want to copy the string.
n: The number of bytes to copy.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The bcopy() function copies the byte string pointed to by src (including any NUL characters) into the array pointed to by dst. The number of bytes to copy is specified by n. Copying of overlapping objects is guaranteed to work properly.

Note: This function is similar to the ANSI memmove() function, but the order of arguments is different. New code should use the ANSI function.

Examples:

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

int main( void )
  {
    auto char buffer[80];

    bcopy( "Hello ", buffer, 6 );
    bcopy( "world",  &buffer[6], 6 );
    printf( "%s\n", buffer );
    return EXIT_SUCCESS;
  }

produces the output:

Hello world

Classification:

Standard Unix; removed from POSIX.1-2008

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes