diff options
Diffstat (limited to 'byte_rchr.c')
-rw-r--r-- | byte_rchr.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/byte_rchr.c b/byte_rchr.c new file mode 100644 index 0000000..476bc22 --- /dev/null +++ b/byte_rchr.c @@ -0,0 +1,23 @@ +#include "byte.h" + +unsigned int byte_rchr(s,n,c) +char *s; +register unsigned int n; +int c; +{ + register char ch; + register char *t; + register char *u; + + ch = c; + t = s; + u = 0; + for (;;) { + if (!n) break; if (*t == ch) u = t; ++t; --n; + if (!n) break; if (*t == ch) u = t; ++t; --n; + if (!n) break; if (*t == ch) u = t; ++t; --n; + if (!n) break; if (*t == ch) u = t; ++t; --n; + } + if (!u) u = t; + return u - s; +} |