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more fixed point work

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This commit is contained in:
Tomas Frydrych
2007-01-19 16:04:06 +00:00
parent f51d4659b8
commit f924e2bbf7
5 changed files with 136 additions and 68 deletions
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15
clutter/clutter-fixed.h
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@ -118,10 +118,9 @@ typedef gint32 ClutterAngle; /* angle such that 1024 == 2*PI */
#define CLUTTER_FIXED_TO_FLOAT(x) ((float) ((int)(x) / 65536.0))
#define CLUTTER_FIXED_TO_DOUBLE(x) ((double) ((int)(x) / 65536.0))
#define CLUTTER_FLOAT_TO_FIXED(x) \
( (ABS(x) > 32767.0) ? (((x) / (x)) * 0x7fffffff) \
: ((long)((x) * 65536.0 + ((x) < 0 ? -0.5 \
: 0.5))) )
#define CLUTTER_FLOAT_TO_FIXED(x) _clutter_double_to_fixed((x))
#define CLUTTER_FLOAT_TO_INT(x) _clutter_double_to_int((x))
#define CLUTTER_INT_TO_FIXED(x) ((x) << CFX_Q)
#define CLUTTER_FIXED_INT(x) ((x) >> CFX_Q)
@ -180,6 +179,14 @@ ClutterFixed clutter_sini (ClutterAngle angle);
ClutterFixed clutter_sqrtx (ClutterFixed x);
gint clutter_sqrti (gint x);
/* <private> */
extern inline
ClutterFixed _clutter_double_to_fixed (double value);
extern inline
ClutterFixed _clutter_double_to_int (double value);
G_END_DECLS
#endif