nuttx/libs/libc/string/lib_strrchr.c
Alin Jerpelea b5d4a01821 libs: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-03 18:52:53 -08:00

53 lines
1.7 KiB
C

/****************************************************************************
* libs/libc/string/lib_strrchr.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 <string.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/* The strrchr() function returns a pointer to the last
* occurrence of the character c in the string s.
*/
FAR char *strrchr(FAR const char *s, int c)
{
if (s)
{
const char *p = &s[strlen(s)];
for (; p >= s; p--)
{
if (*p == c)
{
return (FAR char *)p;
}
}
}
return NULL;
}