2009.11.03 20:46 "Re: [Tiff] Tiffcrop test suite and logluv issues", by Daniel McCoy

From Toby Thain <toby@telegraphics.com.au>, Tue, Nov 03, 2009 at 07:16:07AM -0500:

>
> Alternatively one could write:

>       tp[i] = 65536 * bp[0] + 256 * bp[1] + bp[2];

>

> Compilers today transform the power-of-two multiplications into rather > effective code (read: shift lefts) and it doesn't require parens.

This adds to the cognitive load for humans. A shift shows the intent more clearly.

True.

One way of reducing the cognitive load in the multiply version is to use hex constants:

        tp[i] = 0x10000 * bp[0] + 0x100 * bp[1] + bp[2];

which show the intent more clearly than the decimal constants.