Remove some float-functions ambiguities.

 diff -r b5ca3e646c88 liboctave/ChangeLog

 --- a/liboctave/ChangeLog	Thu Jun 12 10:42:26 2008 +0200

 +++ b/liboctave/ChangeLog	Fri Jun 13 16:34:35 2008 +0200

 @@ -1,3 +1,7 @@

 +2008-06-13  Michael Goffioul  <michael.goffioul@gmail.com>

 +

 +	* lo-mappers.cc: remove ambiguity about atan2(float,float) usage.

 +

  2008-06-05  John W. Eaton  <jwe@octave.org>

  	* oct-shlib.cc (octave_base_shlib::remove): Only dereference

 diff -r b5ca3e646c88 liboctave/fCmplxDET.cc

 --- a/liboctave/fCmplxDET.cc	Thu Jun 12 10:42:26 2008 +0200

 +++ b/liboctave/fCmplxDET.cc	Fri Jun 13 16:34:35 2008 +0200

 @@ -57,7 +57,7 @@

        float etmp = e2 / xlog2 (static_cast<float>(10));

        e10 = static_cast<int> (xround (etmp));

        etmp -= e10;

 -      c10 = c2 * static_cast<float> (pow (10.0, etmp));

 +      c10 = c2 * static_cast<float> (pow (10.0f, etmp));

      }

  }

 diff -r b5ca3e646c88 liboctave/lo-mappers.cc

 --- a/liboctave/lo-mappers.cc	Thu Jun 12 10:42:26 2008 +0200

 +++ b/liboctave/lo-mappers.cc	Fri Jun 13 16:34:35 2008 +0200

 @@ -402,7 +402,7 @@

  float

  arg (float x)

  {

 -  return atan2 (0.0, x);

 +  return atan2 (0.0f, x);

  }

  float