octave: update manual and CHANGES.current

1 files changed, 10 insertions, 0 deletions

diff --git a/Doc/Manual/Octave.html b/Doc/Manual/Octave.html
index efdd751ce..9b9744f65 100644
--- a/Doc/Manual/Octave.html
+++ b/Doc/Manual/Octave.html
@@ -66,6 +66,7 @@ Also, there are a dozen or so examples in the Examples/octave directory, and hun
 <p>
 As of SWIG 3.0.7, the Octave module is regularly tested with Octave versions 3.2.4, 3.8.1, and 4.0.0.
 Use of older Octave versions is not recommended, as these versions are no longer tested with SWIG.
+The SWIG runtime exports the function <tt>swig_octave_prereq()</tt> for checking the version of Octave.
 </p>
 
 <H2><a name="Octave_nn3">32.2 Running SWIG</a></H2>
@@ -643,6 +644,15 @@ octave:3&gt; printf("%s\n",a);
 octave:4&gt; a.__str__()
 4
 </pre></div>
+
+<p>
+Similarly, Octave can use the <tt>__float__</tt> method to convert an object to a numeric value.
+</p>
+
+<p>
+Octave 3.8.0 and later versions will also map unary functions X() to the corresponding <tt>__X__</tt> method, where X includes: abs(), acos(), acosh(), angle(), arg(), asin(), asinh(), atan(), atanh(), cbrt(), ceil(), conj(), cos(), cosh(), dawson(), erf(), erfc(), erfcinv(), erfcx(), erfi(), erfinv(), exp(), expm1(), finite(), fix(), floor(), gamma(), imag(), isalnum(), isalpha(), isascii(), iscntrl(), isdigit(), isgraph(), isinf(), islower(), isna(), isnan(), isprint(), ispunct(), isspace(), isupper(), isxdigit(), lgamma(), log(), log10(), log1p(), log2(), real(), round(), roundb(), signbit(), signum(), sin(), sinh(), sqrt(), tan(), tanh(), toascii(), tolower(), toupper()
+</p>
+
 <H3><a name="Octave_nn20">32.3.11 C++ templates</a></H3>