Aryadev Chavali
5127202722
These new members are just signed versions of the previous members. This makes type punning and usage for signed versions easier than before (no need for memcpy).
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/* Copyright (C) 2023 Aryadev Chavali
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* You may distribute and modify this code under the terms of the
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* GPLv2 license. You should have received a copy of the GPLv2
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* license with this file. If not, please write to:
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* aryadev@aryadevchavali.com.
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* Created: 2023-10-15
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* Author: Aryadev Chavali
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* Description: Basic types and routines
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*/
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#ifndef BASE_H
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#define BASE_H
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#include <stdint.h>
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#define ARR_SIZE(xs) (sizeof(xs) / sizeof(xs[0]))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) > (b) ? (b) : (a))
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#define TERM_GREEN "\e[0;32m"
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#define TERM_YELLOW "\e[0;33m"
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#define TERM_RED "\e[0;31m"
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#define TERM_RESET "\e[0;0m"
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// Flags
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#ifndef VERBOSE
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#define VERBOSE 0
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#endif
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typedef uint8_t u8;
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typedef int8_t i8;
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typedef uint32_t u32;
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typedef int32_t i32;
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typedef uint64_t u64;
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typedef int64_t i64;
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typedef float f32;
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typedef double f64;
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typedef u8 byte;
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typedef i8 s_byte;
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typedef u32 hword;
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typedef i32 s_hword;
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typedef u64 word;
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typedef i64 s_word;
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typedef union
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{
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byte as_byte;
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s_byte as_char;
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hword as_hword;
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s_hword as_int;
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word as_word;
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s_word as_long;
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} data_t;
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typedef enum
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{
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DATA_TYPE_NIL = 0,
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DATA_TYPE_BYTE,
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DATA_TYPE_HWORD,
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DATA_TYPE_WORD,
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} data_type_t;
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#define DBYTE(BYTE) ((data_t){.as_byte = (BYTE)})
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#define DHWORD(HWORD) ((data_t){.as_hword = (HWORD)})
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#define DWORD(WORD) ((data_t){.as_word = (WORD)})
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#define WORD_SAFE_SUB(W, SUB) ((W) > (SUB) ? ((W) - (SUB)) : 0)
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#define HWORD_SIZE sizeof(hword)
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#define SHWORD_SIZE sizeof(s_hword)
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#define WORD_SIZE sizeof(word)
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#define SWORD_SIZE sizeof(s_word)
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// Macros to extract the nth byte or nth hword from a word
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#define WORD_NTH_BYTE(WORD, N) (((WORD) >> ((N)*8)) & 0xff)
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#define WORD_NTH_HWORD(WORD, N) (((WORD) >> ((N)*2)) & 0xFFFFFFFF)
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// Assume array contains 4 bytes.
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hword convert_bytes_to_hword(byte *);
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void convert_hword_to_bytes(hword, byte *);
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// Assume array contains 8 bytes.
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word convert_bytes_to_word(byte *);
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void convert_word_to_bytes(word, byte *);
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#endif
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