case

case − convert ASCII uppercase bytes to lowercase

#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;

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, negative, 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.

byte_diff(3), byte_equal(3), str_diff(3), str_equal(3), str_start(3)