diff options
Diffstat (limited to 'include/osmocom/core/bits.h')
| -rw-r--r-- | include/osmocom/core/bits.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/include/osmocom/core/bits.h b/include/osmocom/core/bits.h index e082313a..3218330b 100644 --- a/include/osmocom/core/bits.h +++ b/include/osmocom/core/bits.h @@ -13,20 +13,19 @@ /*! \file bits.h * \brief Osmocom bit level support code + * + * NOTE on the endianess of pbit_t: + * Bits in a pbit_t are ordered MSB first, i.e. 0x80 is the first bit. + * Bit i in a pbit_t array is array[i/8] & (1<<(7-i%8)) */ typedef int8_t sbit_t; /*!< \brief soft bit (-127...127) */ typedef uint8_t ubit_t; /*!< \brief unpacked bit (0 or 1) */ typedef uint8_t pbit_t; /*!< \brief packed bis (8 bits in a byte) */ -/* - NOTE on the endianess of pbit_t: - Bits in a pbit_t are ordered MSB first, i.e. 0x80 is the first bit. - Bit i in a pbit_t array is array[i/8] & (1<<(7-i%8)) -*/ - /*! \brief determine how many bytes we would need for \a num_bits packed bits * \param[in] num_bits Number of packed bits + * \returns number of bytes needed for \a num_bits packed bits */ static inline unsigned int osmo_pbit_bytesize(unsigned int num_bits) { |