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#ifndef __WRITE_H__
#define __WRITE_H__
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Public: Encode a floating point number into a fixed point, fixed bit width
* field in a bit array.
*
* value - the floating point value to encode.
* bit_offset - the starting point for the encoded bits in the returned value.
* bit_size - The max width of the field in the resulting bit array. If bit_size
* isn't big enough to store the fixed point version of the value, the
* bitfeld will *not* be set. TODO some error reporting would be nice.
* factor - a factor used to transform from floating to fixed point before
* encoding. Use 1.0 for no factor.
* offset - an offset used to transform from floating to fixed point before
* encoding. Use 0 for no offset.
*
* Returns a big-endian uint64_t with the value encoded as a bitfield.
*/
uint64_t eightbyte_encode_float(float value, uint8_t bit_offset,
uint8_t bit_size, float factor, float offset);
uint64_t float_to_fixed_point(const float value, const float factor,
const float offset);
bool bitfield_encode_float(const float value, const uint8_t bit_offset,
const uint8_t bit_size, const float factor, const float offset,
uint8_t destination[], const uint8_t destination_length);
/* Public: Encode a boolean into fixed bit width field in a bit array.
*
* value - the boolean value to encode - true will be 1, false will be 0.
* bit_offset - the starting point for the encoded bits in the returned value.
* bit_size - The max width of the field in the resulting bit array. If bit_size
* isn't big enough to store the fixed point version of the value, the
* bitfeld will *not* be set. TODO some error reporting would be nice.
*
* Returns a big-endian uint64_t with the value encoded as a bitfield.
*/
uint64_t eightbyte_encode_bool(const bool value, const uint8_t bit_offset,
const uint8_t bit_size);
bool bitfield_encode_bool(const bool value, const uint8_t bit_offset, const
uint8_t bit_size, uint8_t destination[],
const uint16_t destination_length);
#ifdef __cplusplus
}
#endif
#endif // __WRITE_H__
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