case_lowerb(3) compare strings case-insensitively

SYNTAX

#include <case.h>

void case_lowerb(void* s,size_t len);

DESCRIPTION

case_lowerb converts each 'A' to 'a', 'B' to 'b', ..., 'Z' to 'z' in s[0], s[1], ..., s[len].