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<h3>Raymond Toy pushed to branch rtoy-setexception-inexact at <a href="https://gitlab.common-lisp.net/cmucl/cmucl">cmucl / cmucl</a></h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.common-lisp.net/cmucl/cmucl/commit/89097cd0d602d233c8deddd443ba4baf0f147aef">89097cd0</a></strong>
<div>
<span>by Raymond Toy</span>
<i>at 2015-12-24T09:15:27Z</i>
</div>
<pre class='commit-message'>Use setexception to raise the inexact exception for %expm1.</pre>
</li>
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<h4>2 changed files:</h4>
<ul>
<li class='file-stats'>
<a href='#diff-0'>
src/lisp/s_expm1.c
</a>
</li>
<li class='file-stats'>
<a href='#diff-1'>
tests/fdlibm.lisp
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id='diff-0'>
<a href='https://gitlab.common-lisp.net/cmucl/cmucl/commit/89097cd0d602d233c8deddd443ba4baf0f147aef#diff-0'>
<strong>
src/lisp/s_expm1.c
</strong>
</a>
<hr>
<pre class="highlight"><code><span style="color: #000000;background-color: #ffdddd">--- a/src/lisp/s_expm1.c
</span><span style="color: #000000;background-color: #ddffdd">+++ b/src/lisp/s_expm1.c
</span><span style="color: #aaaaaa">@@ -160,8 +160,8 @@ Q5 = -2.01099218183624371326e-07; /* BE8AFDB7 6E09C32D */
</span>
}
if(xsb!=0) { /* x < -56*ln2, return -1.0 with inexact */
<span style="color: #000000;background-color: #ffdddd">- if(x+tiny<0.0) /* raise inexact */
- return tiny-one; /* return -1 */
</span><span style="color: #000000;background-color: #ddffdd">+ fdlibm_setexception(x, FDLIBM_INEXACT);
+ return tiny - one;
</span> }
}
</code></pre>
<br>
</li>
<li id='diff-1'>
<a href='https://gitlab.common-lisp.net/cmucl/cmucl/commit/89097cd0d602d233c8deddd443ba4baf0f147aef#diff-1'>
<strong>
tests/fdlibm.lisp
</strong>
</a>
<hr>
<pre class="highlight"><code><span style="color: #000000;background-color: #ffdddd">--- a/tests/fdlibm.lisp
</span><span style="color: #000000;background-color: #ddffdd">+++ b/tests/fdlibm.lisp
</span><span style="color: #aaaaaa">@@ -163,7 +163,12 @@
</span> (kernel:%expm1 709.8d0))
)
(kernel::with-float-traps-masked (:invalid)
<span style="color: #000000;background-color: #ffdddd">- (assert-true (ext::float-nan-p (kernel:%expm1 *snan*)))))
</span><span style="color: #000000;background-color: #ddffdd">+ (assert-true (ext::float-nan-p (kernel:%expm1 *snan*))))
+ ;; expm1(x) = -1 for x < -56*log(2), signaling inexact
+ (let ((x (* -57 (log 2d0))))
+ (with-inexact-exception-enabled
+ (assert-error 'floating-point-inexact
+ (kernel:%expm1 x)))))
</span>
(define-test %log1p.exceptions
(:tag :fdlibm)
</code></pre>
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