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C251 User's Guide

C251 Introduction Compiling Programs Language Extensions Preprocessor Advanced Programming Error Messages Library Reference Library Files Source Code Standard Types jmp_buf va_list Macros CBYTE CVAR CARRAY DARRAY DBYTE DVAR HARRAY HBYTE HVAR NARRAY NBYTE NVAR XARRAY XBYTE XVAR Routines by Category Buffer Manipulation Routines Character Routines Data Conversion Routines Intrinsic Routines Math Routines Memory Allocation Routines Stream I/O Routines String Routines Variable Length Argument Routines Miscellaneous Routines Include Files SFR Definitions absacc.h assert.h ctype.h float.h intrins.h limits.h math.h setjmp.h stdarg.h stddef.h stdio.h stdlib.h string.h Reference _chkdouble_ _chkfloat_ _crol_ _cror_ _getkey _irol_ _iror_ _lrol_ _lror_ _nop_ _testbit_ _tolower _toupper abs acos asin assert atan atan2 atof atoi atol cabs calloc ceil cos cosh exp fabs fcalloc ffree finit_mempool floor fmalloc fmemcpy fmemset frealloc free getchar gets hmemccpy hmemchr hmemcmp hmemcpy hmemmove hmemset hstrcmp hstrcpy hstrlen hstrncpy init_mempool isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit labs log log10 longjmp malloc memccpy memchr memcmp memcpy memmove memset modf offsetof pow printf putchar puts rand realloc scanf setjmp sin sinh sprintf sqrt srand sscanf strcat strchr strcmp strcpy strcspn strlen strncat strncmp strncpy strpbrk strpos strrchr strrpbrk strrpos strspn tan tanh toascii toint tolower toupper ungetchar va_arg va_end va_start vprintf vsprintf xcalloc xfree xinit_mempool xmalloc xmemcpy xmemset xrealloc Appendix

fmemcpy

Summary
#include <string.h>

void far *fmemcpy (
  void far *dest,      /* destination buffer */
  void far *src,       /* source buffer */
  unsigned int len);   /* bytes to copy */
Description

The fmemcpy function copies len bytes from src to dest. If these memory buffers overlap, the fmemcpy function cannot guarantee that bytes in src are copied to dest before being overwritten. If these buffers do overlap, use the fmemmove function.

Note

  • This function uses far pointers to objects and may be used in any memory model other than Tiny Model.
Return Value

The fmemcpy function returns dest.

See Also

fmemset, hmemcpy, memcpy, xmemcpy

Example
#include <string.h>
#include <stdio.h> /* for printf */

void tst_memcpy (char far *src1)
{
char dst1 [101];
char *p;

  p = fmemcpy (dst1, src1, sizeof (dst1));
  printf ("dst = \"%s\"\n", p);
}
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