SYNTAX

       #include "byte.h"

       unsigned int byte_chr(const char *haystack,unsigned int len,char
       needle);
       unsigned int byte_rchr(const char *haystack,unsigned int len,char
       needle);

       void byte_copy(char *out,unsigned int len,const char *in);
       void byte_copyr(char *out,unsigned int len,const char *in);

       int byte_diff(const char *one,unsigned int len,const char *two);

       int byte_equal(const char *one,unsigned int len,const char *two);

       void byte_fill(char *out,unsigned int len,const char c);
       void byte_zero(char *out,unsigned int len);

DESCRIPTION

       byte_chr returns the smallest integer i between 0 and len-1 inclusive
       such that one[i] equals needle.  If no such integer exists, byte_chr
       returns len.  byte_chr may read all bytes one[0], one[1], ...,
       one[len-1], even if not all the bytes are relevant to the answer.

       byte_rchr returns the largest integer i between 0 and len-1 inclusive
       such that one[i] equals needle.  If no such integer exists, byte_rchr
       returns len.  byte_rchr may read all bytes one[0], one[1], ...,
       one[len-1], even if not all the bytes are relevant to the answer.

       byte_copy copies in[0] to out[0], in[1] to out[1], etc., and finally
       in[len-1] to out[len-1].

       byte_copyr copies in[len-1] to out[len-1], in[len-2] to out[len-2],
       etc., and in[0] to out[0].

       byte_diff returns negative, 0, or positive, depending on whether the
       string one[0], one[1], ..., one[len-1] is lexicographically smaller
       than, equal to, or greater than the string one[0], one[1], ...,
       one[len-1].  When the strings are different, byte_diff does not read
       bytes past the first difference.

       byte_equal returns 1 if the strings are equal, 0 otherwise.  When the
       strings are different, byte_equal does not read bytes past the first
       difference.

       byte_fill fills out[0], out[1], ..., out[len-1] with a single byte c.

       byte_zero sets out[0], out[1], ..., out[len-1] to 0.

SEE ALSO

       case(3), stralloc(3)