From 9821a6af983f07bf146b19ca9993e37b88339bf2 Mon Sep 17 00:00:00 2001 From: camthesaxman Date: Wed, 29 Jan 2020 18:32:13 -0600 Subject: add some more files --- libiberty/bcopy.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100755 libiberty/bcopy.c (limited to 'libiberty/bcopy.c') diff --git a/libiberty/bcopy.c b/libiberty/bcopy.c new file mode 100755 index 0000000..b655363 --- /dev/null +++ b/libiberty/bcopy.c @@ -0,0 +1,35 @@ +/* bcopy -- copy memory regions of arbitary length + +NAME + bcopy -- copy memory regions of arbitrary length + +SYNOPSIS + void bcopy (char *in, char *out, int length) + +DESCRIPTION + Copy LENGTH bytes from memory region pointed to by IN to memory + region pointed to by OUT. + +BUGS + Significant speed improvements can be made in some cases by + implementing copies of multiple bytes simultaneously, or unrolling + the copy loop. + +*/ + +void +bcopy (src, dest, len) + register char *src, *dest; + int len; +{ + if (dest < src) + while (len--) + *dest++ = *src++; + else + { + char *lasts = src + (len-1); + char *lastd = dest + (len-1); + while (len--) + *(char *)lastd-- = *(char *)lasts--; + } +} -- cgit v1.2.3