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Add RL64 and RL64S endianness helper macros

This commit is contained in:
Soeren Apel 2015-12-07 20:26:11 +01:00 committed by Uwe Hermann
parent d01c4c56d5
commit 8a66b0777c
1 changed files with 29 additions and 0 deletions
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29
src/libsigrok-internal.h
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@ -150,6 +150,35 @@ struct zip_stat;
((uint64_t)((const uint8_t*)(x))[6] << 8) | \ ((uint64_t)((const uint8_t*)(x))[6] << 8) | \
(uint64_t)((const uint8_t*)(x))[7]) (uint64_t)((const uint8_t*)(x))[7])
/**
* Read a 64 bits little endian unsigned integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding unsigned integer
*/
#define RL64(x) (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
((uint64_t)((const uint8_t*)(x))[6] << 48) | \
((uint64_t)((const uint8_t*)(x))[5] << 40) | \
((uint64_t)((const uint8_t*)(x))[4] << 32) | \
((uint64_t)((const uint8_t*)(x))[3] << 24) | \
((uint64_t)((const uint8_t*)(x))[2] << 16) | \
((uint64_t)((const uint8_t*)(x))[1] << 8) | \
(uint64_t)((const uint8_t*)(x))[0])
/**
* Read a 64 bits little endian signed integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding unsigned integer
*/
#define RL64S(x) ((int64_t) \
(((uint64_t)((const uint8_t*)(x))[7] << 56) | \
((uint64_t)((const uint8_t*)(x))[6] << 48) | \
((uint64_t)((const uint8_t*)(x))[5] << 40) | \
((uint64_t)((const uint8_t*)(x))[4] << 32) | \
((uint64_t)((const uint8_t*)(x))[3] << 24) | \
((uint64_t)((const uint8_t*)(x))[2] << 16) | \
((uint64_t)((const uint8_t*)(x))[1] << 8) | \
(uint64_t)((const uint8_t*)(x))[0]))
/** /**
* Read a 32 bits big endian float out of memory. * Read a 32 bits big endian float out of memory.
* @param x a pointer to the input memory * @param x a pointer to the input memory