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Document the llvm.fabs intrinsic.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159657 91177308-0d34-0410-b5e6-96231b3b80d8
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Peter Collingbourne 2012-07-03 12:25:40 +00:00
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@ -257,6 +257,7 @@
<li><a href="#int_exp">'<tt>llvm.exp.*</tt>' Intrinsic</a></li>
<li><a href="#int_log">'<tt>llvm.log.*</tt>' Intrinsic</a></li>
<li><a href="#int_fma">'<tt>llvm.fma.*</tt>' Intrinsic</a></li>
<li><a href="#int_fabs">'<tt>llvm.fabs.*</tt>' Intrinsic</a></li>
</ol>
</li>
<li><a href="#int_manip">Bit Manipulation Intrinsics</a>
@ -7506,6 +7507,40 @@ LLVM</a>.</p>
</div>
<!-- _______________________________________________________________________ -->
<h4>
<a name="int_fabs">'<tt>llvm.fabs.*</tt>' Intrinsic</a>
</h4>
<div>
<h5>Syntax:</h5>
<p>This is an overloaded intrinsic. You can use <tt>llvm.fabs</tt> on any
floating point or vector of floating point type. Not all targets support all
types however.</p>
<pre>
declare float @llvm.fabs.f32(float %Val)
declare double @llvm.fabs.f64(double %Val)
declare x86_fp80 @llvm.fabs.f80(x86_fp80 %Val)
declare fp128 @llvm.fabs.f128(fp128 %Val)
declare ppc_fp128 @llvm.fabs.ppcf128(ppc_fp128 %Val)
</pre>
<h5>Overview:</h5>
<p>The '<tt>llvm.fabs.*</tt>' intrinsics return the absolute value of
the operand.</p>
<h5>Arguments:</h5>
<p>The argument and return value are floating point numbers of the same
type.</p>
<h5>Semantics:</h5>
<p>This function returns the same values as the libm <tt>fabs</tt> functions
would, and handles error conditions in the same way.</p>
</div>
</div>
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