[gforth] Floating-point stack underflow

[Terrence Brannon]

I tried to put 2 floating point numbers on the stack and was not even
able to do that, let alone add them.

Perhaps the docs on types
<http://www.complang.tuwien.ac.at/forth/gforth/Docs-html/Types-Tutorial.html#Types-Tutorial>
which mentions, f+ needs an example?


sh-3.2$ ./gforth
Gforth 0.7.0, Copyright (C) 1995-2008 Free Software Foundation, Inc.
Gforth comes with ABSOLUTELY NO WARRANTY; for details type `license'
Type `bye' to exit
5.5
5.5  ok
2.2
2.2  ok
.s
.s <4> 55 0 22 0  ok
f+
f+
:4: Floating-point stack underflow
>>>f+<<<
Backtrace:
$7FBA2C08 throw
.s
.s <0>  ok