| /* SPDX-License-Identifier: BSD-2-Clause */ |
| /* |
| * Copyright (c) 2014, STMicroelectronics International N.V. |
| */ |
| #ifndef GUARD_MPA_CONFIG_H |
| #define GUARD_MPA_CONFIG_H |
| |
| #include <limits.h> |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| /************************************************************************\ |
| * Common definitions |
| * You should go through these carefully and adjust to your environment |
| \************************************************************************/ |
| |
| /* |
| * Definitions of different sized integers and unsigned |
| * |
| * mpa_word_t: should be an unsigned int of size equal to the most |
| * efficient add/sub/mul/div word size of the machine. |
| * |
| * mpa_int_t should be a signed int of the same size as the mpa_word_t |
| * |
| * mpa_halfw_t: half size of mpa_word_t |
| * |
| * mpa_asize_t: an unsigned int of suitable size to hold the number of |
| * allocated bytes for the representation. We cannot use size_t |
| * since that is 64 bit long on 64 bit machines, and that is |
| * ridiciously large. |
| * |
| * mpa_usize_t: a signed int suitable to hold the number of used mpa_word_t to |
| * represent the integer. |
| * |
| * mpa_byte_t: the native unsigned byte type. |
| */ |
| typedef uint32_t mpa_word_t; |
| typedef int32_t mpa_int_t; |
| typedef uint16_t mpa_halfw_t; |
| typedef uint32_t mpa_asize_t; |
| typedef int32_t mpa_usize_t; |
| typedef uint8_t mpa_byte_t; |
| |
| /* Number of bits in mpa_word_t */ |
| #define MPA_WORD_SIZE 32 |
| |
| /* Largest representable number in a mpa_int_t */ |
| #define MPA_INT_MAX INT32_MAX |
| |
| /* Smallest representable number in a mpa_int_t */ |
| #define MPA_INT_MIN INT32_MIN |
| |
| /* The Log2(MPA_WORD_SIZE) */ |
| #define MPA_LOG_OF_WORD_SIZE 5 |
| |
| /* The Log2 of number of bytes in a mpa_word_t */ |
| #define MPA_LOG_OF_BYTES_PER_WORD 2 |
| |
| /* The largest power of 10 representable in a mpa_word_t */ |
| #define LARGEST_DECIMAL_BASE_IN_WORD 1000000000 |
| |
| /* the number of decimal digits minus 1 in LARGEST_DECIMAL_BASE_IN_WORD */ |
| #define LARGEST_DECIMAL_BASE_DIGITS 9 |
| |
| /* The largest string size to represent a big number as a string */ |
| #define MPA_STR_MAX_SIZE (4096 + 2) |
| |
| /* define MPA_BIG_ENDIAN or MPA_LITTLE_ENDIAN */ |
| #define MPA_LITTLE_ENDIAN |
| /*#define MPA_BIG_ENDIAN */ |
| |
| /* |
| * comment out the line below if your system does not support "unsigned |
| * long long" |
| */ |
| #define MPA_SUPPORT_DWORD_T |
| |
| /* |
| * define if you want to use ARM assembler code for certain cruicial |
| * functions |
| */ |
| /* #define USE_ARM_ASM */ |
| |
| /* |
| * Include functionality for converting to and from strings; mpa_set_string |
| * and mpa_get_string. |
| */ |
| #define MPA_INCLUDE_STRING_CONVERSION |
| |
| /* |
| * Quick fix to be able to better define these mem functions later |
| */ |
| #define MACRO_DEF_MPA_MEMFUNCS |
| |
| #ifdef MACRO_DEF_MPA_MEMFUNCS |
| #include <stdlib.h> |
| #include <string.h> |
| #define mpa_memset memset |
| #define mpa_memcpy memcpy |
| #define mpa_memmove memmove |
| #endif |
| |
| #endif /* include guard */ |
