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incubator-nuttx/include/strings.h

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C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
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/****************************************************************************
* include/strings.h
*
include: Author: Gregory Nutt: update licenses to Apache 2.0 Update files from Gregory Nutt to Apache 2.0 license. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-02-03 18:33:49 +08:00
* 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
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
2017-02-17 06:10:09 +08:00
*
include: Author: Gregory Nutt: update licenses to Apache 2.0 Update files from Gregory Nutt to Apache 2.0 license. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-02-03 18:33:49 +08:00
* http://www.apache.org/licenses/LICENSE-2.0
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
2017-02-17 06:10:09 +08:00
*
include: Author: Gregory Nutt: update licenses to Apache 2.0 Update files from Gregory Nutt to Apache 2.0 license. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-02-03 18:33:49 +08:00
* 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.
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
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*
****************************************************************************/
#ifndef __INCLUDE_STRINGS_H
#define __INCLUDE_STRINGS_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
Implement strings.h macros as inline functions when possible for better C++ compatibility.
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cstring: undefine macros defined in new strings.h.
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/* Compatibility definitions
*
libc: Unify the selection of inline or macro Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: I44a26550ff856af07d2d96a6f0a6066f988d6da3
2020-06-02 21:41:13 +08:00
* Marked LEGACY in Open Group Base Specifications Issue 6/
* IEEE Std 1003.1-2004
* Removed from Open Group Base Specifications Issue 7/
* IEEE Std 1003.1-2008
cstring: undefine macros defined in new strings.h.
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*/
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
2017-02-17 06:10:09 +08:00
add #undef for some libc function since it's useful to redirect these functions to others sometime(e.g. validate the memory before write). Change-Id: I6253a9231af8809e8362f4bc5a1bd67fb094c3b0
2021-04-14 15:43:16 +08:00
#ifndef bcmp /* See mm/README.txt */
libc: Refine the inline handling 1.Remove CONFIG_HAVE_INLINE macro 2.Change the ANSI C function to normal function 3.Other simple non ANSI function to macro Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-06-26 14:40:13 +08:00
#define bcmp(b1,b2,len) memcmp(b1,b2,(size_t)len)
add #undef for some libc function since it's useful to redirect these functions to others sometime(e.g. validate the memory before write). Change-Id: I6253a9231af8809e8362f4bc5a1bd67fb094c3b0
2021-04-14 15:43:16 +08:00
#endif
#ifndef bcopy /* See mm/README.txt */
Remove the unneeded void cast Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-17 23:14:13 +08:00
#define bcopy(b1,b2,len) memmove(b2,b1,len)
add #undef for some libc function since it's useful to redirect these functions to others sometime(e.g. validate the memory before write). Change-Id: I6253a9231af8809e8362f4bc5a1bd67fb094c3b0
2021-04-14 15:43:16 +08:00
#endif
#ifndef bzero /* See mm/README.txt */
Remove the unneeded void cast Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-17 23:14:13 +08:00
#define bzero(s,n) memset(s,0,n)
add #undef for some libc function since it's useful to redirect these functions to others sometime(e.g. validate the memory before write). Change-Id: I6253a9231af8809e8362f4bc5a1bd67fb094c3b0
2021-04-14 15:43:16 +08:00
#endif
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
2017-02-17 06:10:09 +08:00
libc: Implement local_t related functions since local_t isn't really implemented on NuttX, we can simply redirect to the non-locale version. Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-07-28 22:44:44 +08:00
#define strcasecmp_l(s1, s2, l) strcasecmp(s1, s2)
#define strncasecmp_l(s1, s2, n, l) strncasecmp(s1, s2, n)
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
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/****************************************************************************
Implement strings.h macros as inline functions when possible for better C++ compatibility.
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* Inline Functions
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
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****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
Implement strings.h macros as inline functions when possible for better C++ compatibility.
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/****************************************************************************
* Public Function Prototypes
****************************************************************************/
Eliminate a warning
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int ffs(int j);
Add ffsl(), ffsll(), fls(), flsl(), flsll() and use GCC's __builtin_ctz/__builtin_clz for faster implementation of these
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int ffsl(long j);
#ifdef CONFIG_HAVE_LONG_LONG
int ffsll(long long j);
#endif
int fls(int j);
int flsl(long j);
#ifdef CONFIG_HAVE_LONG_LONG
int flsll(long long j);
#endif
libc: Implement popcount/popcountl/popcountll specified here: https://www.unix.com/man-page/netbsd/3/popcountll/ Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-09-21 16:34:16 +08:00
unsigned int popcount(unsigned int j);
unsigned int popcountl(unsigned long j);
unsigned int popcountll(unsigned long long j);
libc: Change index/rindex from macro to function to avoid the confliction with the same name variable Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-08-05 18:26:39 +08:00
FAR char *index(FAR const char *s, int c);
FAR char *rindex(FAR const char *s, int c);
Eliminate a warning
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int strcasecmp(FAR const char *, FAR const char *);
int strncasecmp(FAR const char *, FAR const char *, size_t);
C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead.
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#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __INCLUDE_STRINGS_H */