Float-to-Fixed and Fixed-to-Float Conversions

Detailed Description

Functions to convert between floating point and fixed point types.

Note

Anything involving a "float" on AVR will be slower.

Functions
LIB8STATIC float	sfract15ToFloat (sfract15 y)
	Conversion from 16-bit fixed point (sfract15) to IEEE754 32-bit float.
LIB8STATIC sfract15	floatToSfract15 (float f)
	Conversion from IEEE754 float in the range (-1,1) to 16-bit fixed point (sfract15).

Function Documentation

floatToSfract15()

LIB8STATIC sfract15 floatToSfract15

(

float

f

)

Conversion from IEEE754 float in the range (-1,1) to 16-bit fixed point (sfract15).

Note

The extremes of one and negative one are NOT representable! The representable range is 0.99996948242 to -0.99996948242, in steps of 0.00003051757.

Definition at line 406 of file lib8tion.h.

sfract15ToFloat()

LIB8STATIC float sfract15ToFloat

(

sfract15

y

)

Conversion from 16-bit fixed point (sfract15) to IEEE754 32-bit float.

Definition at line 398 of file lib8tion.h.