incubator-nuttx/arch/risc-v/include/limits.h

/****************************************************************************
 * arch/risc-v/include/limits.h
 *
 * 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.
 *
 ****************************************************************************/

#ifndef __ARCH_RISCV_INCLUDE_LIMITS_H
#define __ARCH_RISCV_INCLUDE_LIMITS_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

#define CHAR_BIT    8
#define SCHAR_MIN  (-SCHAR_MAX - 1)
#define SCHAR_MAX   127
#define UCHAR_MAX   255

/* These could be different on machines where char is unsigned */

#ifdef __CHAR_UNSIGNED__
#  define CHAR_MIN  0
#  define CHAR_MAX  UCHAR_MAX
#else
#  define CHAR_MIN  SCHAR_MIN
#  define CHAR_MAX  SCHAR_MAX
#endif

#define SHRT_MIN    (-SHRT_MAX - 1)
#define SHRT_MAX    32767
#define USHRT_MAX   65535U

#define INT_MIN     (-INT_MAX - 1)
#define INT_MAX     2147483647
#define UINT_MAX    4294967295U

/* These change on 32-bit and 64-bit platforms */

#ifdef CONFIG_ARCH_RV32
#  define LONG_MIN  (-LONG_MAX - 1)
#  define LONG_MAX  2147483647L
#  define ULONG_MAX 4294967295UL

#  define LLONG_MIN  (-LLONG_MAX - 1)
#  define LLONG_MAX  9223372036854775807LL
#  define ULLONG_MAX 18446744073709551615ULL

/* A pointer is 4 bytes */

#  define PTR_MIN   (-PTR_MAX - 1)
#  define PTR_MAX   2147483647
#  define UPTR_MAX  4294967295U
#else /* CONFIG_ARCH_RV32 */
#  define LONG_MIN  (-LONG_MAX - 1)
#  define LONG_MAX  9223372036854775807L
#  define ULONG_MAX 18446744073709551615UL

#  define LLONG_MIN  (-LLONG_MAX - 1)
#  define LLONG_MAX  9223372036854775807LL
#  define ULLONG_MAX 18446744073709551615ULL

#  define PTR_MIN   (-PTR_MAX - 1)
#  define PTR_MAX   9223372036854775807
#  define UPTR_MAX  18446744073709551615U
#endif

#if !defined(__WCHAR_TYPE__)
#  define WCHAR_MIN INT_MIN
#  define WCHAR_MAX INT_MAX
#elif defined(__WCHAR_UNSIGNED__)
#  define WCHAR_MIN 0
#  define WCHAR_MAX __WCHAR_MAX__
#else
#  define WCHAR_MIN (-__WCHAR_MAX__ - 1)
#  define WCHAR_MAX __WCHAR_MAX__
#endif

#endif /* __ARCH_RISCV_INCLUDE_LIMITS_H */