mutter-performance-source/doc/reference/tmpl/clutter-fixed.sgml

<!-- ##### SECTION Title ##### -->
clutter-fixed

<!-- ##### SECTION Short_Description ##### -->
Fixed point API

<!-- ##### SECTION Long_Description ##### -->
<para>
Clutter has a fixed point API targeted at platforms without a floating
point unit, such as embedded devices. This API should be preferred to
the floating point one as it does not trigger the slow path of software
emulation, relying on integer math for fixed-to-floating and
floating-to-fixed conversion.
</para>

<!-- ##### SECTION See_Also ##### -->
<para>

</para>

<!-- ##### SECTION Stability_Level ##### -->


<!-- ##### TYPEDEF ClutterFixed ##### -->
<para>

</para>


<!-- ##### MACRO CFX_Q ##### -->
<para>
Number of bits used to store fractional part of #ClutterFixed.
</para>



<!-- ##### MACRO CFX_ONE ##### -->
<para>
#ClutterFixed representation of 1.
</para>



<!-- ##### MACRO CFX_MAX ##### -->
<para>
Maximum number representable by #ClutterFixed.
</para>



<!-- ##### MACRO CFX_MIN ##### -->
<para>
Minumum number representable by #ClutterFixed.
</para>



<!-- ##### TYPEDEF ClutterAngle ##### -->
<para>

</para>


<!-- ##### MACRO CFX_PI ##### -->
<para>
#ClutterFixed  representation of Pi.
</para>



<!-- ##### MACRO CFX_2PI ##### -->
<para>
#ClutterFixed representation of 2 * Pi.
</para>



<!-- ##### MACRO CFX_PI_2 ##### -->
<para>
#ClutterFixed representation of Pi/2.
</para>



<!-- ##### MACRO CFX_PI_4 ##### -->
<para>
#ClutterFixed representation of Pi/4.
</para>



<!-- ##### MACRO CFX_120 ##### -->
<para>
#ClutterFixed representation of 120.
</para>



<!-- ##### MACRO CFX_180 ##### -->
<para>
#ClutterFixed representation of 180.
</para>



<!-- ##### MACRO CFX_240 ##### -->
<para>
#ClutterFixed representation of 240.
</para>



<!-- ##### MACRO CFX_360 ##### -->
<para>
#ClutterFixed representation of 360.
</para>



<!-- ##### MACRO CFX_60 ##### -->
<para>
#ClutterFixed representation of 60.
</para>



<!-- ##### MACRO CFX_255 ##### -->
<para>
#ClutterFixed representation of 255.
</para>



<!-- ##### MACRO CFX_DIV ##### -->
<para>
Alias for #CLUTTER_FIXED_DIV.
</para>



<!-- ##### MACRO CFX_INT ##### -->
<para>
Alias for #CLUTTER_FIXED_INT.
</para>



<!-- ##### MACRO CFX_MUL ##### -->
<para>
Alias for #CLUTTER_FIXED_MUL.
</para>



<!-- ##### MACRO CLUTTER_FIXED_TO_FLOAT ##### -->
<para>
Macro for converting #ClutterFixed to single precission floating point.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_TO_DOUBLE ##### -->
<para>
Macro for converting #ClutterFixed to double precission floating point.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FLOAT_TO_FIXED ##### -->
<para>
Macro for converting floating point numbers to #ClutterFixed.
</para>

@x: double or float


<!-- ##### MACRO CLUTTER_INT_TO_FIXED ##### -->
<para>
Macro for converting integers to #ClutterFixed.
</para>

@x: int


<!-- ##### MACRO CLUTTER_FIXED_INT ##### -->
<para>
Macro to obtain integer part of #ClutterFixed.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_FRACTION ##### -->
<para>
Macro to obtain the fraction of #ClutterFixed.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_FLOOR ##### -->
<para>
Macro to obtain greatest integer smaller than given #ClutterFixed.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_CEIL ##### -->
<para>
Macro to obtain smallest integer greater than given #ClutterFixed.
</para>

@x: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_MUL ##### -->
<para>
Macro for multiplication of two #ClutterFixed numbers.
</para>

@x: #ClutterFixed
@y: #ClutterFixed


<!-- ##### MACRO CLUTTER_FIXED_DIV ##### -->
<para>
Macro for difvision of two #ClutterFixed numbers.
</para>

@x: #ClutterFixed
@y: #ClutterFixed


<!-- ##### MACRO clutter_cosi ##### -->
<para>
Very fast fixed point cosine function.
</para>

@x: #ClutterAngle


<!-- ##### MACRO clutter_cosx ##### -->
<para>
Fast fixed point cosine function.
</para>

@x: #ClutterFixed


<!-- ##### FUNCTION clutter_sini ##### -->
<para>

</para>

@angle: 
@Returns: 


<!-- ##### FUNCTION clutter_sinx ##### -->
<para>

</para>

@angle: 
@Returns: 


<!-- ##### FUNCTION clutter_sqrti ##### -->
<para>

</para>

@x: 
@Returns: 


<!-- ##### FUNCTION clutter_sqrtx ##### -->
<para>

</para>

@x: 
@Returns: