buffer-manipulation.md

description

Learn more about: Buffer manipulation

title

Buffer manipulation

ms.date

04/04/2018

helpviewer_keywords

buffers, manipulation routines

buffers

ms.assetid

164f4860-ce66-412c-8291-396fbd70f03e

Buffer manipulation

Use these routines to work with areas of memory on a byte-by-byte basis.

Routine	Use
`_memccpy`	Copy characters from one buffer to another until given character or given number of characters has been copied
`memchr`, `wmemchr`	Return pointer to first occurrence, within specified number of characters, of given character in buffer
`memcmp`, `wmemcmp`	Compare specified number of characters from two buffers
`memcpy`, `wmemcpy`, `memcpy_s`, `wmemcpy_s`	Copy specified number of characters from one buffer to another
`_memicmp`, `_memicmp_l`	Compare specified number of characters from two buffers without regard to case
`memmove`, `wmemmove`,`memmove_s`, `wmemmove_s`	Copy specified number of characters from one buffer to another
`memset`, `wmemset`	Use given character to initialize specified number of bytes in the buffer
`_swab`	Swap bytes of data and store them at specified location

When the source and target areas overlap, only memmove is guaranteed to copy the full source properly.