mirror of
https://github.com/apache/nuttx.git
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13ab107d67
remove reference to non-existent readme in libc. Pointing to the documentation page doesn't make sense in this case, because it doesn't explain the use of `#undef XXX` for this case anyway. Signed-off-by: raiden00pl <raiden00@railab.me>
142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/****************************************************************************
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* include/strings.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_STRINGS_H
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#define __INCLUDE_STRINGS_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <string.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Compatibility definitions
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*
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* Marked LEGACY in Open Group Base Specifications Issue 6/
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* IEEE Std 1003.1-2004
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* Removed from Open Group Base Specifications Issue 7/
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* IEEE Std 1003.1-2008
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*/
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#ifndef bcmp
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#define bcmp(b1,b2,len) memcmp(b1,b2,(size_t)len)
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#endif
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#ifndef bcopy
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#define bcopy(b1,b2,len) memmove(b2,b1,len)
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#endif
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#ifndef bzero
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#define bzero(s,n) memset(s,0,n)
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#endif
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#define strcasecmp_l(s1, s2, l) strcasecmp(s1, s2)
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#define strncasecmp_l(s1, s2, n, l) strncasecmp(s1, s2, n)
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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int ffs(int j);
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#ifdef CONFIG_HAVE_BUILTIN_FFS
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# define ffs(j) __builtin_ffs(j)
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#elif defined (CONFIG_HAVE_BUILTIN_CTZ)
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# define ffs(j) (__builtin_ctz(j) + 1)
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#endif
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int ffsl(long j);
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#ifdef CONFIG_HAVE_BUILTIN_FFSL
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# define ffsl(j) __builtin_ffsl(j)
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#elif defined (CONFIG_HAVE_BUILTIN_CTZ)
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# define ffsl(j) (__builtin_ctzl(j) + 1)
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#endif
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#ifdef CONFIG_HAVE_LONG_LONG
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int ffsll(long long j);
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# ifdef CONFIG_HAVE_BUILTIN_FFSLL
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# define ffsll(j) __builtin_ffsll(j)
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# elif defined (CONFIG_HAVE_BUILTIN_CTZ)
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# define ffsll(j) (__builtin_ctzll(j) + 1)
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# endif
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#endif
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int fls(int j);
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#ifdef CONFIG_HAVE_BUILTIN_CLZ
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# define fls(j) ((8 * sizeof(int)) - __builtin_clz(j))
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#endif
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int flsl(long j);
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#ifdef CONFIG_HAVE_BUILTIN_CLZ
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# define flsl(j) ((8 * sizeof(long)) - __builtin_clzl(j))
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#endif
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int flsll(long long j);
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#ifdef CONFIG_HAVE_LONG_LONG
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# ifdef CONFIG_HAVE_BUILTIN_CLZ
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# define flsll(j) ((8 * sizeof(long long)) - __builtin_clzll(j))
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# endif
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#endif
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unsigned int popcount(unsigned int j);
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unsigned int popcountl(unsigned long j);
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unsigned int popcountll(unsigned long long j);
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FAR char *index(FAR const char *s, int c);
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FAR char *rindex(FAR const char *s, int c);
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int strcasecmp(FAR const char *, FAR const char *);
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int strncasecmp(FAR const char *, FAR const char *, size_t);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_STRINGS_H */
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