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GimpMath

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Mathematical definitions and macros.

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<para>
Mathematical definitions and macros. These macros should be used
rather than the ones from math.h for enhanced portability.
</para>

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</para>

<!-- ##### MACRO RINT ##### -->
<para>
This macro rounds its argument @x to an integer value in floating point
format.
</para>

@x: the value to be rounded.


<!-- ##### MACRO ROUND ##### -->
<para>
This macro rounds its argument @x to the nearest integer.
</para>

@x: the value to be rounded.


<!-- ##### MACRO SQR ##### -->
<para>
This macro squares its argument @x.
</para>

@x: the value to be squared.


<!-- ##### MACRO MAX255 ##### -->
<para>
This macro limits it argument @a, an (0-511) int, to 255.
</para>

@a: the value to be limited.


<!-- ##### MACRO CLAMP0255 ##### -->
<para>
This macro clamps its argument @a, an int32-range int, between 0 and
255 inclusive.
</para>

@a: the value to be clamped.


<!-- ##### MACRO gimp_deg_to_rad ##### -->
<para>
This macro converts its argument @angle from degree to radian.
</para>

@angle: the angle to be converted.


<!-- ##### MACRO gimp_rad_to_deg ##### -->
<para>
This macro converts its argument @angle from radian to degree.
</para>

@angle: the angle to be converted.


