On 2017-09-05, Marko Rauhamaa <ma...@pacujo.net> wrote:
> Pointer arithmetics is not an essential part of C. One could argue that
> it was a mistake to include it in the language.
One may argue that it was a mistake, but I remember at least one
implementation where pointer arithmetic was hugely more efficient than
indexing into arrays. Incrementing a pointer through an array was
way, way faster than indexing through the array by incrementing an
array subscript.
But, that was 25 years ago on an 8-bit CPU where where integer
multiplies were expensive. The last time I compare the two methods
with a recent GCC on a 32-bit CPU, it generated pretty much the same
code either way...
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