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author | Jason Merrill <jason@gcc.gnu.org> | 1997-08-21 18:57:35 -0400 |
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committer | Jason Merrill <jason@gcc.gnu.org> | 1997-08-21 18:57:35 -0400 |
commit | 6599da043e22e96ac830fb50a61c1b6d95d1b142 (patch) | |
tree | a3b19970338bdae580faff126a716e1d5520400c /libiberty/bcopy.c | |
parent | 8975416cfb6269ad94b6330d42960cca8b0925b7 (diff) | |
download | gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.zip gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.tar.gz gcc-6599da043e22e96ac830fb50a61c1b6d95d1b142.tar.bz2 |
Initial revision
From-SVN: r14877
Diffstat (limited to 'libiberty/bcopy.c')
-rw-r--r-- | libiberty/bcopy.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libiberty/bcopy.c b/libiberty/bcopy.c new file mode 100644 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--; + } +} |