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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:
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<ul>
<li>
<strong><a href="https://gitlab.common-lisp.net/cmucl/cmucl/commit/90b9651bf60a59800f76a6e7fede76a4897dfae5">90b9651b</a></strong>
<div>
<span>by Raymond Toy</span>
<i>at 2015-12-27T21:02:14Z</i>
</div>
<pre class='commit-message'>Clean up with-float-traps macro.

 * Add some comments.
 * Change x86 (setf floating-point-modes) to accept (unsigned-byte
   32).
 * Remove unneeded x86 conditionalization on the byte size.</pre>
</li>
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<h4>1 changed file:</h4>
<ul>
<li class='file-stats'>
<a href='#diff-0'>
src/code/float-trap.lisp
</a>
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<h4>Changes:</h4>
<li id='diff-0'>
<a href='https://gitlab.common-lisp.net/cmucl/cmucl/commit/90b9651bf60a59800f76a6e7fede76a4897dfae5#diff-0'>
<strong>
src/code/float-trap.lisp
</strong>
</a>
<hr>
<pre class="highlight"><code><span style="color: #000000;background-color: #ffdddd">--- a/src/code/float-trap.lisp
</span><span style="color: #000000;background-color: #ddffdd">+++ b/src/code/float-trap.lisp
</span><span style="color: #aaaaaa">@@ -104,7 +104,7 @@
</span> 
       final-mode))
   (defun (setf floating-point-modes) (new-mode)
<span style="color: #000000;background-color: #ffdddd">-    (declare (type (unsigned-byte 24) new-mode))
</span><span style="color: #000000;background-color: #ddffdd">+    (declare (type (unsigned-byte 32) new-mode))
</span>     ;; Set the floating point modes for both X87 and SSE2.  This
     ;; include the rounding control bits.
     (let* ((rc (ldb float-rounding-mode new-mode))
<span style="color: #aaaaaa">@@ -117,8 +117,8 @@
</span>               ;; is ok and would be the correct setting if we
                    ;; ever support long-floats.
                    (ash 3 8))))
<span style="color: #000000;background-color: #ffdddd">-      (setf (vm::sse2-floating-point-modes) new-mode)
-      (setf (vm::x87-floating-point-modes) x87-modes))
</span><span style="color: #000000;background-color: #ddffdd">+      (setf (vm::sse2-floating-point-modes) (ldb (byte 24 0) new-mode))
+      (setf (vm::x87-floating-point-modes) (ldb (byte 24 0) x87-modes)))
</span>     new-mode)
   )
 
<span style="color: #aaaaaa">@@ -365,12 +365,12 @@
</span>            (error _"SIGFPE with no exceptions currently enabled? (si-code = ~D)"
                        code)))))))
 
<span style="color: #000000;background-color: #ffdddd">-;;; WITH-FLOAT-TRAPS-MASKED  --  Public
-;;; WITH-FLOAT-TRAPS-ENABLED --  Public
-
-
</span> (macrolet
     ((with-float-traps (name logical-op docstring)
<span style="color: #000000;background-color: #ddffdd">+       ;; Define macros to enable or disable floating-point
+       ;; exceptions.  Masked exceptions and enabled exceptions only
+       ;; differ whether we AND in the bits or OR them, respectively.
+       ;; Logical-op is the operation to use.
</span>        (let ((macro-name (symbolicate "WITH-FLOAT-TRAPS-" name)))
         `(progn
            (defmacro ,macro-name (traps &body body)
<span style="color: #aaaaaa">@@ -398,9 +398,7 @@
</span>              (unwind-protect
                        (progn
                          (setf (floating-point-modes)
<span style="color: #000000;background-color: #ffdddd">-                                (ldb (byte #+x86 24
-                                          #-x86 32
-                                          0)
</span><span style="color: #000000;background-color: #ddffdd">+                           (ldb (byte 32 0)
</span>                                (,',logical-op ,orig-modes ,(logand trap-mask exception-mask))))
                          ,@body)
                     ;; Restore the original traps and exceptions.
<span style="color: #aaaaaa">@@ -411,8 +409,8 @@
</span>                                      #+ppc
                                           ,invalid-mask
                                           #+mips ,(dpb 0 float-exceptions-byte #xffffffff))))))))))))
<span style="color: #000000;background-color: #ffdddd">-  ;; Masked and Enabled only differ whether we AND in the bits or OR
-  ;; them.
</span><span style="color: #000000;background-color: #ddffdd">+
+  ;; WITH-FLOAT-TRAPS-MASKED  --  Public
</span>   (with-float-traps masked logand
     _N"Execute BODY with the floating point exceptions listed in TRAPS
   masked (disabled).  TRAPS should be a list of possible exceptions
<span style="color: #aaaaaa">@@ -421,6 +419,7 @@
</span>   accrued exceptions are cleared at the start of the body to support
   their testing within, and restored on exit.")
 
<span style="color: #000000;background-color: #ddffdd">+  ;; WITH-FLOAT-TRAPS-ENABLED --  Public
</span>   (with-float-traps enabled logorc2
     _N"Execute BODY with the floating point exceptions listed in TRAPS
   enabled.  TRAPS should be a list of possible exceptions which
</code></pre>

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