diff options
Diffstat (limited to 'example_avr_double/double_conversion.h')
| -rw-r--r-- | example_avr_double/double_conversion.h | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/example_avr_double/double_conversion.h b/example_avr_double/double_conversion.h deleted file mode 100644 index 62b6a8a..0000000 --- a/example_avr_double/double_conversion.h +++ /dev/null @@ -1,26 +0,0 @@ -/* AVR-GCC does not have real double datatype. Instead its double - * is equal to float, i.e. 32 bit value. If you need to communicate - * with other systems that use double in their .proto files, you - * need to do some conversion. - * - * These functions use bitwise operations to mangle floats into doubles - * and then store them in uint64_t datatype. - */ - -#ifndef DOUBLE_CONVERSION -#define DOUBLE_CONVERSION - -#include <stdint.h> - -/* Convert native 4-byte float into a 8-byte double. */ -extern uint64_t float_to_double(float value); - -/* Convert 8-byte double into native 4-byte float. - * Values are rounded to nearest, 0.5 away from zero. - * Overflowing values are converted to Inf or -Inf. - */ -extern float double_to_float(uint64_t value); - - -#endif - |