nuttx/libs/libc/string/lib_strlen.c
liuhaitao dc639b2b59 Merge remote-tracking branch 'mirtos/master' into dev-upmerge-nuttx-10.1-0507
Change-Id: I4bb3a61356be2b4a77ccfe45390b15e68a376dd6
Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
2021-05-07 20:46:07 +08:00

41 lines
1.5 KiB
C

/****************************************************************************
* libs/libc/string/lib_strlen.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 <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef CONFIG_LIBC_ARCH_STRLEN
#undef strlen
size_t strlen(const char *s)
{
const char *sc;
for (sc = s; *sc != '\0'; ++sc);
return sc - s;
}
#endif