{{fbdoc item="title" value="FB_MEMMOVE"}}----
Copies a block of memory from a location to another

{{fbdoc item="syntax"}}##
	[[KeyPgDeclare|declare]] [[KeyPgFunction|function]] **fb_memmove** [[KeyPgCdecl|cdecl]] ( [[KeyPgByref|byref]] //dst// [[KeyPgAs|as]] [[KeyPgAny|any]], [[KeyPgByref|byref]] //src// [[KeyPgAs|as]] [[KeyPgAny|any]], [[KeyPgByval|byval]] //bytes// [[KeyPgAs|as]] [[KeyPgUinteger|uinteger]] ) [[KeyPgAs|as]] [[KeyPgAny|any]] [[KeyPgPtr|ptr]]
##
{{fbdoc item="usage"}}##
	[//result// =] **fb_memmove**( //dst//, //src//, //bytes// )
##
{{fbdoc item="param"}}
	##//dst//##
		starting address of destination memory
	##//src//##
		starting address of source memory
	##//bytes//##
		number of bytes to copy

{{fbdoc item="ret"}}
	The starting address of destination memory is returned.

{{fbdoc item="desc"}}
	##**fb_memmove**## copies a given number of bytes from the memory location ##//src//## to the memory location ##//dst//##. Each starting address is taken from a reference to a variable or array element.
	Copying takes place as if an intermediate buffer were used, allowing the destination and source areas to overlap in any way (safer approach, and for any platform). Using ##[[KeyPgFBMemcopy|fb_memcopy]]## is sufficient (and may induce greater speed) when the memory areas do not overlap.
	To avoid overflows, the valid memory areas pointed to by both ##//src//## and ##//dst//## must be at least equal in size to the number of bytes to be copied.
	
	The underlying type of the objects pointed to by both the source and destination pointers are irrelevant for this function.
	The function does not check for any terminating null character in the source area. It always copies exactly the given number of bytes.
	The result is a binary copy of the data.
	
	**Note:** In order to copy from/to memory referenced by a ##[[KeyPgPtr|Pointer]]##, it must be dereferenced first (or else specify in argument term the ##[[KeyPgByval|Byval]]## keyword in front of the pointer name). Otherwise, ##**fb_memmove**## will try to copy the bytes from/to the **pointer variable**'s memory location.

{{fbdoc item="ex"}}
	{{fbdoc item="filename" value="examples/manual/array/memmove.bas"}}%%(freebasic)
Dim As Zstring * 33 z = "memmove can be very useful......"

Print z

fb_memmove(z[20], z[15], 11)

Print z

Sleep
	%%Output:
		%%
memmove can be very useful......
memmove can be very very useful.
		%%
{{fbdoc item="diff"}}
	- The behavior and usage is new to ""FreeBASIC"".

{{fbdoc item="see"}}
	- ##[[KeyPgFBMemcopy|fb_memcopy]]##
	- ##[[KeyPgFBMemcopyclear|fb_memcopyclear]]##

{{fbdoc item="back" value="CatPgMemory|Memory Functions"}}