assertion failure in std.range.iota

[Ali Çehreli]

On Fri, 19 Aug 2011 02:18:39 +0200, Andrej Mitrovic wrote:

> import std.range;
> import std.stdio;
> 
> void main()
> {
>     auto r1 = iota(0.0, 4.0, 0.03);  // ok auto r2 = iota(0.0, 3.0,
>     0.03);  //
> core.exception.AssertError at std.range(4001): Assertion failure }
> 
> I want a range in steps of 0.03, beginning at 0.0 and ending at the
> closest point to 3.0.
> 
> Line 4001 is:
> assert(start + count * step >= end);

An example of a floating point calculation error. (count * step) comes 
out to be less than end. :-/

> 
> This assertion and the code above it make absolutely no sense to me. The
> intention would be more clear if there was an error message, or any
> documentation of the implementation, but no dice.

Ali