Re: [ gnuplot-Patches-1218873 ] Change text rotating angle from int to float

[Hans-Bernhard B. <br...@ph...>]

Harald Harders wrote:
> I don't trust C compilers that they will return exactly 0 when you set a
> variable to 0 in all cases. Does the ANSI C standard define
> that
> 
> float a = 0.0;
> if (a == 0) ...
> 
> always is true? 

Pretty much so. For zero literals, that is. As soon as you use any kind
of computation that your maths book says yields zero, all bets are off.

> Another thing could be thought of:
> Terminals that can only set term horizontally or vertically should switch
> from horizontal to vertical text when exceeding 45 degrees, not when going
> from zero to one. What do you mean? 

As part of your change from integer to float, which is a complete break 
of the existing terminal API anyway, that modification makes sense.  As 
part of the previous extension, where we just extended the 
interpretation of an int argument that was meant to be boolean (rotate 
by 90 degrees or not), it wouldn't have.