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c32b683085
Every compiler supported by NuttX provides the "long long" types,
so the CONFIG_HAVE_LONG_LONG indirection is no longer useful.
Remove the option from include/nuttx/compiler.h and treat
"long long" as unconditionally available across the OS.
In addition to deleting the guard itself, this commit unconditionally
enables the long-long flavored helpers that used to be gated behind
it:
- libs/libc/fixedmath: drop the soft-emulated b32/ub32 routines
in lib_fixedmath.c (-261 lines) and trim the matching
prototypes, Make.defs and CMakeLists.txt entries; keep only
the long-long backed implementations.
- include/sys/endian.h, include/strings.h, libs/libc/string
/lib_ffsll.c, lib_flsll.c: always expose the 64-bit byte-swap
and ffsll/flsll variants.
- libs/libm/libm/lib_llround{,f,l}.c: drop the empty stubs.
- libs/libc/stdlib (atoll, llabs, lldiv, strtoll/ull, rand48,
strtold), libs/libc/stream (libvsprintf, libvscanf,
libbsprintf, ultoa_invert), libs/libc/misc (crc64, crc64emac),
libs/libc/inttypes/strtoimax, libs/libc/lzf, libs/libc/libc.csv,
libs/libc/string (memset, vikmemcpy): remove the
#ifdef CONFIG_HAVE_LONG_LONG branches.
- include/{stddef.h,stdlib.h,fixedmath.h,sys/epoll.h,cxx/cstdlib,
nuttx/audio/audio.h,nuttx/crc64.h,nuttx/lib/math.h,
nuttx/lib/math32.h,nuttx/lib/stdbit.h}: same guard cleanup.
- drivers/note/note_driver.c, fs/spiffs/src/spiffs.h,
sched/irq/irq_procfs.c: drop their local guards as well.
- Documentation/applications/netutils/ntpclient/index.rst:
refresh the documentation snippet.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/****************************************************************************
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* libs/libc/stdlib/lib_strtoull.c
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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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/****************************************************************************
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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 <stdlib.h>
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#include <errno.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: strtoull
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*
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* Description:
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* The strtoull() function converts the initial part of the string in
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* nptr to a long unsigned integer value according to the given base, which
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* must be between 2 and 36 inclusive, or be the special value 0.
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*
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* Returned Value:
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* - The converted value, if the base and number are valid
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* - 0 if an error occurs, and set errno to:
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* * EINVAL if base < 2 or base > 36
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* - ULLONG_MAX if an overflow occurs, and set errno to:
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* * ERANGE if the number cannot be represented using unsigned long long
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*
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****************************************************************************/
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unsigned long long strtoull(FAR const char *nptr,
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FAR char **endptr, int base)
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{
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unsigned long long accum = 0;
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unsigned long long limit;
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int value;
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int last_digit;
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char sign = 0;
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if (nptr)
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{
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/* Skip leading spaces */
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lib_skipspace(&nptr);
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/* Check for leading + or - already done for strtol */
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if (*nptr == '-' || *nptr == '+')
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{
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sign = *nptr;
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nptr++;
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}
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/* Check for unspecified or incorrect base */
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base = lib_checkbase(base, &nptr);
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if (base < 0)
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{
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set_errno(EINVAL);
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accum = 0;
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}
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else
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{
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limit = ULLONG_MAX / base;
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last_digit = ULLONG_MAX % base;
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/* Accumulate each "digit" */
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while (lib_isbasedigit(*nptr, base, &value))
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{
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/* Check for overflow */
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if (accum > limit || (accum == limit && value > last_digit))
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{
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set_errno(ERANGE);
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accum = ULLONG_MAX;
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break;
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}
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accum = accum * base + value;
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nptr++;
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}
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while (lib_isbasedigit(*nptr, base, &value))
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{
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nptr++;
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}
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if (sign == '-')
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{
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accum = (~accum) + 1;
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}
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}
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}
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/* Return the final pointer to the unused value */
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if (endptr)
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{
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if (sign)
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{
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if (*(nptr - 1) == sign)
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{
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nptr--;
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}
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}
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*endptr = (FAR char *)nptr;
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}
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return accum;
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}
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