1// Copyright 2017 The Fuchsia Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include <ctype.h> 6#include <strings.h> 7 8int strcasecmp(const char* s1, const char* s2) { 9 while (1) { 10 int diff = tolower(*s1) - tolower(*s2); 11 if (diff != 0 || *s1 == '\0') { 12 return diff; 13 } 14 s1++; 15 s2++; 16 } 17} 18 19int strncasecmp(const char* s1, const char* s2, size_t len) { 20 while (len-- > 0) { 21 int diff = tolower(*s1) - tolower(*s2); 22 if (diff != 0 || *s1 == '\0') { 23 return diff; 24 } 25 s1++; 26 s2++; 27 } 28 return 0; 29} 30