Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/cmd/unix/drawterm/libc/runestrncmp.c
#include <u.h> #include <libc.h> int runestrncmp(Rune *s1, Rune *s2, long n) { Rune c1, c2; while(n > 0) { c1 = *s1++; c2 = *s2++; n--; if(c1 != c2) { if(c1 > c2) return 1; return -1; } if(c1 == 0) break; } return 0; }