#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>

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Macros
#define	ALT_CAST(type, ptr) ((type) (ptr))

#define	alt_write_byte(dest, src) (ALT_CAST(volatile uint8_t , (dest)) = (src))

#define	alt_read_byte(src) (ALT_CAST(volatile uint8_t , (src)))

#define	alt_write_hword(dest, src) (ALT_CAST(volatile uint16_t , (dest)) = (src))

#define	alt_read_hword(src) (ALT_CAST(volatile uint16_t , (src)))

#define	alt_write_word(dest, src) (ALT_CAST(volatile uint32_t , (dest)) = (src))

#define	alt_read_word(src) (ALT_CAST(volatile uint32_t , (src)))

#define	alt_write_dword(dest, src) (ALT_CAST(volatile uint64_t , (dest)) = (src))

#define	alt_read_dword(src) (ALT_CAST(volatile uint64_t , (src)))

#define	alt_setbits_byte(dest, bits) (alt_write_byte(dest, alt_read_byte(dest) \| (bits)))

#define	alt_clrbits_byte(dest, bits) (alt_write_byte(dest, alt_read_byte(dest) & ~(bits)))

#define	alt_xorbits_byte(dest, bits) (alt_write_byte(dest, alt_read_byte(dest) ^ (bits)))

#define	alt_replbits_byte(dest, msk, src) (alt_write_byte(dest,(alt_read_byte(dest) & ~(msk)) \| ((src) & (msk))))

#define	alt_setbits_hword(dest, bits) (alt_write_hword(dest, alt_read_hword(dest) \| (bits)))

#define	alt_clrbits_hword(dest, bits) (alt_write_hword(dest, alt_read_hword(dest) & ~(bits)))

#define	alt_xorbits_hword(dest, bits) (alt_write_hword(dest, alt_read_hword(dest) ^ (bits)))

#define	alt_replbits_hword(dest, msk, src) (alt_write_hword(dest,(alt_read_hword(dest) & ~(msk)) \| ((src) & (msk))))

#define	alt_setbits_word(dest, bits) (alt_write_word(dest, alt_read_word(dest) \| (bits)))

#define	alt_clrbits_word(dest, bits) (alt_write_word(dest, alt_read_word(dest) & ~(bits)))

#define	alt_xorbits_word(dest, bits) (alt_write_word(dest, alt_read_word(dest) ^ (bits)))

#define	alt_replbits_word(dest, msk, src) (alt_write_word(dest,(alt_read_word(dest) & ~(msk)) \| ((src) & (msk))))

#define	alt_setbits_dword(dest, bits) (alt_write_dword(dest, alt_read_dword(dest) \| (bits)))

#define	alt_clrbits_dword(dest, bits) (alt_write_dword(dest, alt_read_dword(dest) & ~(bits)))

#define	alt_xorbits_dword(dest, bits) (alt_write_dword(dest, alt_read_dword(dest) ^ (bits)))

#define	alt_replbits_dword(dest, msk, src) (alt_write_dword(dest,(alt_read_dword(dest) & ~(msk)) \| ((src) & (msk))))

Macros