On Thu, 03 Sep 2009 16:18:34 +0300
Z3N <1337z3n...@gmail.com> wrote:
>I'm have some new question. How to add digits in 16.16, or 26.6
>format??? a>>6+b>>6 - not usefull.
I'm not sure what you want to do. In the calculation "a>>6 + b>>6",
what are a and b? Both of a and b are 26.6 fixed point values and
you want to obtain the integer result? Here I quote a few macros
in include/freetype/internal/ftcalc.h...
#define INT_TO_F26DOT6( x ) ( (FT_Long)(x) << 6 )
#define INT_TO_F2DOT14( x ) ( (FT_Long)(x) << 14 )
#define INT_TO_FIXED( x ) ( (FT_Long)(x) << 16 )
#define F2DOT14_TO_FIXED( x ) ( (FT_Long)(x) << 2 )
#define FLOAT_TO_FIXED( x ) ( (FT_Long)( x * 65536.0 ) )
#define FIXED_TO_INT( x ) ( FT_RoundFix( x ) >> 16 )
#define ROUND_F26DOT6( x ) ( x >= 0 ? ( ( (x) + 32 ) & -64 ) \
: ( -( ( 32 - (x) ) & -64 ) ) )
Regards,
mpsuzuki
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