case(3) Library Functions Manual case(3)
NAME
case - convert ASCII uppercase bytes to lowercase
SYNTAX
#include <case.h>
void case_lowers(s);
void case_lowerb(s,len);
int case_diffs(s,t);
int case_equals(s,t);
int case_starts(s,t);
int case_diffb(s,len,t);
int case_startb(s,len,t);
char *s;
char *t;
unsigned int len;
DESCRIPTION
case_lowers converts each uppercase byte in the string s to lowercase. s must be 0-terminated.
case_lowerb converts each uppercase byte in the buffer s, of length len, to lowercase.
case_diffs lexicographically compares lowercase versions of the strings s and t. It returns something positive, negative, or zero when the
first is larger than, smaller than, or equal to the second. s and t must be 0-terminated.
case_equals means !case_diffs.
case_starts returns 1 if a lowercase version of s starts with a lowercase version of t. s and t must be 0-terminated.
case_diffb lexicographically compares lowercase versions of the buffers s and t, each of length len. It returns something positive, nega-
tive, or zero when the first is larger than, smaller than, or equal to the second.
case_startb returns 1 if a lowercase version of the buffer s, of length len, starts with a lowercase version of the string t. t must be
0-terminated.
The case routines are ASCII-specific. They are suitable for programs that handle case-independent networking protocols.
All comparisons are performed on unsigned bytes.
SEE ALSO
byte_diff(3), byte_equal(3), str_diff(3), str_equal(3), str_start(3)
case(3)