memset.c
资源名称:shell.rar [点击查看]
上传用户:xhy777
上传日期:2007-02-14
资源大小:24088k
文件大小:2k
源码类别:
系统编程
开发平台:
Visual C++
- /***
- *memset.c - set a section of memory to all one byte
- *
- * Copyright (c) 1988-1997, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * contains the memset() routine
- *
- *******************************************************************************/
- //#include <cruntime.h>
- #include <string.h>
- #ifdef _MSC_VER
- #pragma function(memset)
- #endif /* _MSC_VER */
- /***
- *char *memset(dst, val, count) - sets "count" bytes at "dst" to "val"
- *
- *Purpose:
- * Sets the first "count" bytes of the memory starting
- * at "dst" to the character value "val".
- *
- *Entry:
- * void *dst - pointer to memory to fill with val
- * int val - value to put in dst bytes
- * size_t count - number of bytes of dst to fill
- *
- *Exit:
- * returns dst, with filled bytes
- *
- *Exceptions:
- *
- *******************************************************************************/
- void * __cdecl memset (
- void *dst,
- int val,
- size_t count
- )
- {
- void *start = dst;
- #if defined (_M_MRX000) || defined (_M_ALPHA) || defined (_M_PPC)
- {
- extern void RtlFillMemory( void *, size_t count, char );
- RtlFillMemory( dst, count, (char)val );
- }
- #else /* defined (_M_MRX000) || defined (_M_ALPHA) || defined (_M_PPC) */
- while (count--) {
- *(char *)dst = (char)val;
- dst = (char *)dst + 1;
- }
- #endif /* defined (_M_MRX000) || defined (_M_ALPHA) || defined (_M_PPC) */
- return(start);
- }
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