Inside Macintosh: QuickDraw GX Environment and Utilities /

Chapter 8 - QuickDraw GX Mathematics / QuickDraw GX Mathematics Reference

Number-Conversion Macros / Format Conversions

FloatToFract

You can use the FloatToFract macro to convert a floating-point number to a fract number.

define FloatToFract(a) ((fract)((float)(a)*fract1))

a

A floating-point number to be converted to a fract number.

macro result

A fract number having the closest value to the floating-point number.