/**************************************************************************** * libs/libc/string/lib_strncmp.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include /**************************************************************************** * Public Functions ****************************************************************************/ #ifndef CONFIG_ARCH_STRNCMP #undef strncmp /* See mm/README.txt */ int strncmp(FAR const char *cs, FAR const char *ct, size_t nb) { register int result = 0; for (; nb > 0; nb--) { if ((result = (unsigned char)*cs - (unsigned char)*ct++) != 0 || *cs++ == '\0') { break; } } return result; } #endif