negate

How can I negate the return-value of a process?

I'm looking for a simple, but cross-platform negate-process that negates the value a process returns. It should map 0 to some value != 0 and any value != 0 to 0, i.e. the following command should return "yes, nonexistingpath doesn't exist": ls nonexistingpath | negate && echo "yes, nonexistingpath doesn't exist." The ! - operator is ...

isn't there an operator in c to change the sign of a int float etc from negative to positive or vice versa?

trying to find absolute value and i thought there was a simple way to just invert the sign with '~' or something. ...

In Ruby, how to implement "20 - point" and "point - 20" using coerce() ?

In Ruby, the operation of point - 20 # treating it as point - (20,20) 20 - point # treating it as (20,20) - point are to be implemented. But the following code: class Point attr_accessor :x, :y def initialize(x,y) @x, @y = x, y end def -(q) if (q.is_a? Fixnum) return Point.new(@x - q, @y - q) end Poin...

Negating certain words from a custom rewrite expression?

Hi. I have a WP page named Book (/book/) which displays a book in various languages. The language and chapter variables are passed as query variables. So the URL structure looks like: /book/english/ (This displays a list of chapters in English) /book/english/foreword/ (This displays the Foreword of the book in English) Here is what I h...

Turn on leftmost bit of a Short.

Original question changed. I want to bitwise turn off the left most bit of a Short value (&H8000) and leave the other bits as they are. Dim x = BitConverter.GetBytes(Short.MaxValue Or &H8000) Dim z = BitConverter.ToInt16(x, 0) Isn't there any shorter way with bitwise operators? When I do Dim a = Short.MaxValue Or &H8000 I get a c...

.NET decimal.Negate vs multiplying by -1

Are there any differences between decimal.Negate(myDecimal) and myDecimal * -1 (except maybe readability)? ...