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renderer=
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"Content-Type" content=
"text/html; charset=UTF-8" /><link rel=
"stylesheet" type=
"text/css" href=
"opengl-man.css" /><title>usubBorrow - OpenGL Shading Language (GLSL)
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.69.1" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"usubBorrow"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>usubBorrow — subtract unsigned integers and generate borrow
</p></div><div class=
"refsynopsisdiv"><h2>Declaration
</h2><div class=
"funcsynopsis"><table border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">genUType
<b class=
"fsfunc">usubBorrow
</b>(
</code></td><td>genUType
</td><td><var class=
"pdparam">x
</var>,
</td></tr><tr><td> </td><td>genUType
</td><td><var class=
"pdparam">y
</var>,
</td></tr><tr><td> </td><td>out genUType
</td><td><var class=
"pdparam">borrow
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>x
</code></em></span></dt><dd><p>
5 Specifies the first vector to be used in the subtraction operation.
6 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>y
</code></em></span></dt><dd><p>
7 Specifies the second vector to be used in the subtraction operation.
8 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>borrow
</code></em></span></dt><dd><p>
9 Specifies the variable to receive the borrow output of the difference.
10 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
11 <code class=
"function">usubBorrow
</code> subtracts two
32-bit unsigned integer variables (scalars or vectors) and generates
12 a
32-bit unsigned integer result, along with a borrow output. The result is the difference of
<em class=
"parameter"><code>x
</code></em> and
13 <em class=
"parameter"><code>y
</code></em> if non-negative, or
<mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
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14 plus that difference otherwise.
15 The value
<em class=
"parameter"><code>borrow
</code></em> is set to
0 if
<em class=
"parameter"><code>x
</code></em> ≥
<em class=
"parameter"><code>y
</code></em> and to
1 otherwise.
16 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"versions"></a><h2>Version Support
</h2><div class=
"informaltable"><table border=
"1"><colgroup><col align=
"left" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /><col align=
"center" /></colgroup><thead><tr><th align=
"left"><span class=
"bold"><strong>Function
</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
1.10</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
1.20</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
1.30</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
1.40</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
1.50</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
3.30</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
4.00</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
4.10</strong></span></th><th align=
"left"><span class=
"bold"><strong>Version
4.20</strong></span></th><th align=
"center"><span class=
"bold"><strong>Version
4.30</strong></span></th></tr><tr><th align=
"left">usubBorrow
</th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>-
</em></span></th><th align=
"center"><span class=
"emphasis"><em>Y
</em></span></th><th align=
"center"><span class=
"emphasis"><em>Y
</em></span></th><th align=
"center"><span class=
"emphasis"><em>Y
</em></span></th><th align=
"center"><span class=
"emphasis"><em>Y
</em></span></th></tr></thead></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
17 <a href=
"uaddCarry.xml"><span class=
"citerefentry"><span class=
"refentrytitle">uaddCarry
</span></span></a>
18 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
19 Copyright
<span class=
"trademark"></span>©
2011 Khronos Group.
20 This material may be distributed subject to the terms and conditions set forth in
21 the Open Publication License, v
1.0,
8 June
1999.
22 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
23 </p></div></div></body></html>