# HG changeset patch
# User Jaroslav Hajek <highegg@gmail.com>
# Date 1244524328 -7200
# Node ID 0d9178575dd7f5fa7581aef889130a6832ccf86e
# Parent  1a1c839625b33e8040369f3bbe3e38caa2f71137
fix log2 with 2 outargs, loosen tests to meet IEEE

diff --git a/liboctave/ChangeLog b/liboctave/ChangeLog
--- a/liboctave/ChangeLog
+++ b/liboctave/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-09  Jaroslav Hajek  <highegg@gmail.com>
+
+	* lo-mappers.cc (xlog2 (const Complex&, int&), xlog2 (const
+	FloatComplex&, int&)): Use more robust expression.
+
 2009-06-07  Jaroslav Hajek  <highegg@gmail.com>
 
 	* Array.cc (Array<T>::find): Avoid allocating excessive memory. Fix
diff --git a/liboctave/lo-mappers.cc b/liboctave/lo-mappers.cc
--- a/liboctave/lo-mappers.cc
+++ b/liboctave/lo-mappers.cc
@@ -185,7 +185,7 @@
 {
   double ax = std::abs (x);
   double lax = xlog2 (ax, exp);
-  return (exp == 0) ? x : (x / ax) * lax;
+  return (ax != lax) ? (x / ax) * lax : x;
 }
 
 // double -> bool mappers.
@@ -503,7 +503,7 @@
 {
   float ax = std::abs (x);
   float lax = xlog2 (ax, exp);
-  return (exp == 0) ? x : (x / ax) * lax;
+  return (ax != lax) ? (x / ax) * lax : x;
 }
 
 // float -> bool mappers.
diff --git a/src/ChangeLog b/src/ChangeLog
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-09  Jaroslav Hajek  <highegg@gmail.com>
+
+	* data.cc (Flog2): Fix tests.
+
 2009-06-08  John W. Eaton  <jwe@octave.org>
 
 	* variables.cc (symbol_exist): Returnn 1 for function handles and
diff --git a/src/data.cc b/src/data.cc
--- a/src/data.cc
+++ b/src/data.cc
@@ -1082,12 +1082,12 @@
 %!test
 %! [f, e] = log2 ([0,-1; 2,-4; Inf,-Inf]);
 %! assert (f, [0,-0.5; 0.5,-0.5; Inf,-Inf]);
-%! assert (e, [0,1;2,3;0,0])
+%! assert (e(1:2,:), [0,1;2,3])
 
 %!test
 %! [f, e] = log2 (complex (zeros (3, 2), [0,-1; 2,-4; Inf,-Inf]));
 %! assert (f, complex (zeros (3, 2), [0,-0.5; 0.5,-0.5; Inf,-Inf]));
-%! assert (e, [0,1; 2,3; 0,0]);
+%! assert (e(1:2,:), [0,1; 2,3]);
 */
 
 DEFUN (fmod, args, ,