| 1 | /* bcmp |
| 2 | This function is in the public domain. */ |
| 3 | |
| 4 | /* |
| 5 | |
| 6 | NAME |
| 7 | |
| 8 | bcmp -- compare two memory regions |
| 9 | |
| 10 | SYNOPSIS |
| 11 | |
| 12 | int bcmp (char *from, char *to, int count) |
| 13 | |
| 14 | DESCRIPTION |
| 15 | |
| 16 | Compare two memory regions and return zero if they are identical, |
| 17 | non-zero otherwise. If count is zero, return zero. |
| 18 | |
| 19 | NOTES |
| 20 | |
| 21 | No guarantee is made about the non-zero returned value. In |
| 22 | particular, the results may be signficantly different than |
| 23 | strcmp(), where the return value is guaranteed to be less than, |
| 24 | equal to, or greater than zero, according to lexicographical |
| 25 | sorting of the compared regions. |
| 26 | |
| 27 | BUGS |
| 28 | |
| 29 | */ |
| 30 | |
| 31 | |
| 32 | int |
| 33 | bcmp (from, to, count) |
| 34 | char *from, *to; |
| 35 | int count; |
| 36 | { |
| 37 | int rtnval = 0; |
| 38 | |
| 39 | while (count-- > 0) |
| 40 | { |
| 41 | if (*from++ != *to++) |
| 42 | { |
| 43 | rtnval = 1; |
| 44 | break; |
| 45 | } |
| 46 | } |
| 47 | return (rtnval); |
| 48 | } |
| 49 | |