Lines Matching full:point

5 narrow scope of techniques in use to enable conversion of floating-point
20 express fixed point and affine transformations via uniformly spaced point on the
29 ### Fixed point values
31 [Fixed point](https://en.wikipedia.org/wiki/Fixed-point_arithmetic) values are a
38 scaled values. For example, if the scale is $ \pi $, then fixed point values
41 point value with a given $ scale $ is $ \frac{scale}{2} $. Continuing the
57 [adding a Real-valued *zero point*, to a scaled value](https://en.wikipedia.org/wiki/Affine_transfo…
58 Alternatively (and equivalently), subtracting a zero point from an affine value results in a
66 [converted](#affine-to-fixed-point) to the equivalent scaled values.
79 value, the zero point must be an integer between the minimum and maximum affine
88 Real values, fixed point values, and affine values relate through the following
96 (this applies to both cases: storing using floating point and storing using
97 fixed point). Note that a full discussion of rounding behavior is outside the
102 ### Converting between real and fixed point or affine
104 To convert a real value to a fixed point value, we must know the scale. To
105 convert a real value to an affine value, we must know the scale and the zero point.
110 floating point format, frequently
131 Note that bit depth and number of fixed point values are indicative
140 floating point format, frequently Single precision), the following conversion
159 #### Affine to fixed point
161 When the affine and fixed point scales are the same, subtract the zero point
162 from the affine value to get the equivalent fixed point value.
170 #### Fixed point to affine
172 When the affine and fixed point scales are the same, add the zero point to the
173 fixed point value to get the equivalent affine value.
189         mapping between *expressed* values (typically of a floating point
230 *   stats_ref : Declares that statistics should be gathered at this point with a
232 *   stats : Declares inline statistics (per layer and per axis) for the point in
262 in floating point with appropriate conversions at the boundaries.