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Groups > comp.lang.javascript > #30659
| From | "Chris M. Thomasson" <nospam@nospam.invalid> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Impact of implicit arrays... |
| Date | 2016-06-14 22:19 -0700 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <njqohh$1a4a$1@gioia.aioe.org> (permalink) |
| References | <njhj52$hl3$1@gioia.aioe.org> <4a1c28ea-447b-4e9b-9c75-68ef85c379e7@googlegroups.com> <njq6qn$qc3$1@gioia.aioe.org> |
On 6/14/2016 5:17 PM, Chris M. Thomasson wrote:
[...]
> Also, we can do this another way that involves an explicit
> output parameter to the function. Something like:
> _______________________________________
> function ct_complex_mul(c0, c1, out)
> {
> out[0] = c0[0] * c1[0] - c0[1] * c1[1];
> out[1] = c0[0] * c1[1] + c0[1] * c1[0];
>
> return out;
> }
> _______________________________________
>
>
> To call it in a loop could look like:
> _______________________________________
> function foo_with_out()
> {
> var out = [0, 0];
> var z = [1, 1];
> var c = [2, 2];
>
> for (var i = 0; i < 10; ++i)
> {
> out = ct_complex_mul(z, c);
> z[0] = out[0];
> z[1] = out[1];
> }
> }
> _______________________________________
I have a nasty typo in there. Let me correct that:
_______________________________________
function ct_complex_mul(c0, c1, out)
{
out[0] = c0[0] * c1[0] - c0[1] * c1[1];
out[1] = c0[0] * c1[1] + c0[1] * c1[0];
}
function foo_with_out()
{
var out = [0, 0];
var z = [1, 1];
var c = [2, 2];
for (var i = 0; i < 10; ++i)
{
ct_complex_mul(z, c, out);
z[0] = out[0];
z[1] = out[1];
}
}
_______________________________________
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Impact of implicit arrays... "Chris M. Thomasson" <nospam@nospam.com> - 2016-06-11 10:52 -0700
Re: Impact of implicit arrays... Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-06-12 12:16 +0200
Re: Impact of implicit arrays... "Chris M. Thomasson" <nospam@nospam.com> - 2016-06-13 12:23 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-13 22:00 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <nospam@nospam.com> - 2016-06-14 17:17 -0700
Re: Impact of implicit arrays... Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-06-15 06:55 +0200
Re: Impact of implicit arrays... "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-14 22:19 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-18 12:47 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-21 14:43 -0700
Re: Impact of implicit arrays... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-22 00:10 +0200
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-21 15:28 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-21 15:31 -0700
Re: Impact of implicit arrays... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-22 11:55 +0200
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 12:23 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 14:14 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 14:16 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 18:14 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 18:46 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-21 17:35 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-21 21:08 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-21 23:09 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-23 14:38 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-24 07:16 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-06-25 18:03 -0700
Re: Impact of implicit arrays... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-06-25 18:24 -0700
Re: Impact of implicit arrays... "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-07-01 13:52 -0700
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