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Groups > comp.lang.c > #60126 > unrolled thread
| Started by | Philipp Klaus Krause <pkk@spth.de> |
|---|---|
| First post | 2015-04-16 13:08 +0200 |
| Last post | 2015-04-18 08:11 -0700 |
| Articles | 20 on this page of 192 — 30 participants |
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Re: Problems with va_list & friends... Philipp Klaus Krause <pkk@spth.de> - 2015-04-16 13:08 +0200
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-16 12:14 -0500
Re: Problems with va_list & friends... gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-16 17:18 +0000
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-16 18:43 +0100
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-16 21:03 -0500
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-16 23:38 -0400
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-17 07:39 +0100
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-17 13:31 -0500
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-17 14:46 -0400
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-18 11:46 -0700
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-18 15:35 -0700
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-22 10:57 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-19 11:58 +0100
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-20 10:50 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 17:55 +0100
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-17 23:01 -0500
Re: Problems with va_list & friends... Robert Wessel <robertwessel2@yahoo.com> - 2015-04-18 00:24 -0500
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-18 07:50 -0400
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-18 11:56 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-19 14:59 +0100
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-19 11:47 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-19 18:44 +0100
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-19 18:34 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 01:42 -0700
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 08:14 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 10:30 -0700
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 13:56 -0400
Re: Problems with va_list & friends... Ian Pilcher <arequipeno@gmail.com> - 2015-04-20 18:39 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-23 12:37 -0700
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-23 20:25 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-24 07:58 -0700
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-24 12:58 -0500
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-24 22:13 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-28 13:05 -0700
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-30 08:40 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-05-01 08:40 -0700
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-05-03 11:42 -0500
Re: Problems with va_list & friends... Ian Collins <ian-news@hotmail.com> - 2015-05-04 17:43 +1200
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-05-04 07:34 -0500
Re: Problems with va_list & friends... Phil Carmody <pc+usenet@asdf.org> - 2015-05-08 17:12 +0300
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-05-10 07:40 -0700
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-05-04 08:49 -0700
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-05-04 12:23 -0500
Re: Problems with va_list & friends... Les Cargill <lcargill99@comcast.com> - 2015-04-20 07:49 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 14:27 +0100
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-20 09:39 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 17:48 +0100
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-20 15:58 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 22:25 +0100
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 13:22 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 11:15 -0700
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 15:02 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 12:51 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 21:17 +0100
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-20 16:09 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-21 00:33 +0100
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 16:26 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 15:46 -0700
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-20 16:17 -0700
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-21 07:43 -0700
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-21 08:06 -0700
Re: Problems with va_list & friends... Philip Lantz <prl@canterey.us> - 2015-04-22 21:55 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 20:04 +0100
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 13:22 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 21:42 +0100
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 16:58 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-21 01:16 +0100
Re: Problems with va_list & friends... Melzzzzz <mel@zzzzz.com> - 2015-04-21 02:19 +0200
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-20 23:14 -0700
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-21 11:47 -0400
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-22 00:13 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-22 08:36 +0100
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-22 03:15 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-22 11:52 +0100
Re: Problems with va_list & friends... Öö Tiib <ootiib@hot.ee> - 2015-04-22 09:04 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-22 17:14 +0100
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-20 15:24 -0700
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-21 00:24 -0500
Re: Problems with va_list & friends... raltbos@xs4all.nl (Richard Bos) - 2015-04-21 09:33 +0000
Re: Problems with va_list & friends... gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-21 11:57 +0000
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-21 10:22 -0500
The Metric system (Was: Problems with va_list & friends...) gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-21 15:38 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Greg Martin <greg.at.softsprocket@dot.com> - 2015-04-21 15:58 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-21 18:09 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Greg Martin <greg.at.softsprocket@dot.com> - 2015-04-21 17:42 +0000
Re: The Metric system (Was: Problems with va_list & friends...) David Brown <david.brown@hesbynett.no> - 2015-04-22 10:47 +0200
Re: The Metric system (Was: Problems with va_list & friends...) Ian Collins <ian-news@hotmail.com> - 2015-04-22 20:56 +1200
Re: The Metric system (Was: Problems with va_list & friends...) guinness.tony@gmail.com - 2015-04-22 03:53 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-22 11:01 -0500
Re: The Metric system (Was: Problems with va_list & friends...) gwowen <gwowen@gmail.com> - 2015-04-23 08:17 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-22 10:21 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-22 11:17 -0500
Re: The Metric system (Was: Problems with va_list & friends...) David Kleinecke <dkleinecke@gmail.com> - 2015-04-22 09:59 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-22 18:48 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-22 14:35 -0500
Re: The Metric system Ben Bacarisse <ben.lists@bsb.me.uk> - 2015-04-22 21:22 +0100
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-25 09:58 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-25 12:33 +0100
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-25 12:18 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-25 13:51 +0100
Re: The Metric system (Was: Problems with va_list & friends...) David Brown <david.brown@hesbynett.no> - 2015-04-25 16:34 +0200
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-25 17:00 +0100
Re: The Metric system (Was: Problems with va_list & friends...) gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-25 16:59 +0000
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-28 16:04 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-30 04:22 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Martin Shobe <martin.shobe@yahoo.com> - 2015-04-30 09:27 -0500
Re: The Metric system (Was: Problems with va_list & friends...) Robert Wessel <robertwessel2@yahoo.com> - 2015-04-30 12:01 -0500
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-30 13:38 +0100
Re: The Metric system (Was: Problems with va_list & friends...) David Brown <david.brown@hesbynett.no> - 2015-04-25 16:36 +0200
Re: The Metric system (Was: Problems with va_list & friends...) Ian Collins <ian-news@hotmail.com> - 2015-04-26 08:20 +1200
Re: The Metric system (Was: Problems with va_list & friends...) "Bill Davy" <Bill@SynectixLtd.com> - 2015-04-25 21:33 +0100
Re: The Metric system (Was: Problems with va_list & friends...) David Brown <david.brown@hesbynett.no> - 2015-04-26 12:07 +0200
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-26 14:22 +0100
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-26 15:44 +0000
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-22 13:11 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Robert Wessel <robertwessel2@yahoo.com> - 2015-04-22 17:05 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-22 18:30 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-22 17:35 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-22 19:15 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-23 11:05 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-23 12:54 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-23 14:12 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-23 15:50 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-23 16:43 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-23 18:09 -0400
Re: The Metric system (Was: Problems with va_list & friends...) "Osmium" <r124c4u102@comcast.net> - 2015-04-22 13:15 -0500
Re: The Metric system (Was: Problems with va_list & friends...) gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-22 19:17 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-22 20:48 +0100
Re: The Metric system (Was: Problems with va_list & friends...) "Osmium" <r124c4u102@comcast.net> - 2015-04-23 08:11 -0500
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-23 12:58 -0400
Re: The Metric system (Was: Problems with va_list & friends...) Robert Wessel <robertwessel2@yahoo.com> - 2015-04-23 14:13 -0500
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-25 10:08 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-22 17:15 -0500
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-25 09:18 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-25 13:02 -0500
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-26 14:26 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Philip Lantz <prl@canterey.us> - 2015-05-03 11:48 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-05-05 18:20 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-05-05 12:43 -0500
Re: The Metric system (Was: Problems with va_list & friends...) Bartc <bc@freeuk.com> - 2015-04-22 11:32 +0100
Re: The Metric system (Was: Problems with va_list & friends...) "Bill Davy" <Bill@SynectixLtd.com> - 2015-04-22 14:31 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Ian Collins <ian-news@hotmail.com> - 2015-04-23 07:51 +1200
Re: The Metric system (Was: Problems with va_list & friends...) "Bill Davy" <Bill@SynectixLtd.com> - 2015-04-23 08:05 +0100
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-25 10:10 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-26 09:27 +0100
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-26 10:55 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Morris Dovey <mrdovey@iedu.com> - 2015-04-26 07:19 -0500
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-26 12:59 +0000
Re: The Metric system (Was: Problems with va_list & friends...) gwowen <gwowen@gmail.com> - 2015-04-28 07:07 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Morris Dovey <mrdovey@iedu.com> - 2015-04-28 09:51 -0500
Re: The Metric system (Was: Problems with va_list & friends...) guinness.tony@gmail.com - 2015-04-28 08:04 -0700
Re: The Metric system (Was: Problems with va_list & friends...) Richard Heathfield <rjh@cpax.org.uk> - 2015-04-28 16:19 +0100
Re: The Metric system (Was: Problems with va_list & friends...) Les Cargill <lcargill99@comcast.com> - 2015-04-28 19:15 -0500
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-28 16:06 +0000
Re: The Metric system (Was: Problems with va_list & friends...) guinness.tony@gmail.com - 2015-04-28 09:39 -0700
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-28 16:51 +0000
Re: The Metric system (Was: Problems with va_list & friends...) guinness.tony@gmail.com - 2015-04-29 05:08 -0700
Re: The Metric system (Was: Problems with va_list & friends...) raltbos@xs4all.nl (Richard Bos) - 2015-04-29 13:47 +0000
Re: The Metric system (Was: Problems with va_list & friends...) James Kuyper <jameskuyper@verizon.net> - 2015-04-28 13:03 -0400
Re: The Metric system (Was: Problems with va_list & friends...) David Thompson <dave.thompson2@verizon.net> - 2015-05-10 12:24 -0400
Re: The Metric system (Was: Problems with va_list & friends...) gazelle@shell.xmission.com (Kenny McCormack) - 2015-04-21 18:12 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Greg Martin <greg.at.softsprocket@dot.com> - 2015-04-21 19:34 +0000
Re: The Metric system (Was: Problems with va_list & friends...) Stephen Sprunk <stephen@sprunk.org> - 2015-04-21 12:46 -0500
Re: The Metric system (Was: Problems with va_list & friends...) Ian Collins <ian-news@hotmail.com> - 2015-04-22 07:42 +1200
Re: The Metric system (Was: Problems with va_list & friends...) Greg Martin <greg.at.softsprocket@dot.com> - 2015-04-21 20:13 +0000
Re: The Metric system (Was: Problems with va_list & friends...) David Brown <david.brown@hesbynett.no> - 2015-04-22 10:52 +0200
Re: The Metric system (Was: Problems with va_list & friends...) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-04-22 09:18 -0700
Re: Problems with va_list & friends... raltbos@xs4all.nl (Richard Bos) - 2015-04-21 22:25 +0000
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-23 15:59 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-23 11:51 -0700
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-23 11:26 -0700
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-20 16:15 -0500
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 17:23 -0400
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 13:17 -0400
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-20 15:26 -0500
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-20 16:15 -0700
Re: Problems with va_list & friends... Stephen Sprunk <stephen@sprunk.org> - 2015-04-21 00:42 -0500
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-22 11:15 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 21:50 +0100
Re: Problems with va_list & friends... James Kuyper <jameskuyper@verizon.net> - 2015-04-20 17:04 -0400
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-18 08:22 -0700
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-19 18:23 +0100
Re: Problems with va_list & friends... Keith Thompson <kst-u@mib.org> - 2015-04-19 13:22 -0700
Re: Problems with va_list & friends... Robert Wessel <robertwessel2@yahoo.com> - 2015-04-19 21:51 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 10:01 +0100
Re: Problems with va_list & friends... Robert Wessel <robertwessel2@yahoo.com> - 2015-04-20 05:08 -0500
Re: Problems with va_list & friends... Richard Heathfield <rjh@cpax.org.uk> - 2015-04-20 11:37 +0100
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-23 20:13 -0700
Re: Problems with va_list & friends... Philipp Klaus Krause <pkk@spth.de> - 2015-04-18 09:15 +0200
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-18 12:13 -0700
Re: Problems with va_list & friends... Richard Damon <Richard@Damon-Family.org> - 2015-04-16 23:40 -0400
Re: Problems with va_list & friends... Tim Rentsch <txr@alumni.caltech.edu> - 2015-04-18 08:11 -0700
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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Date | 2015-04-23 12:54 -0400 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <553923CC.8000604@verizon.net> |
| In reply to | #60912 |
On 04/23/2015 12:05 PM, Stephen Sprunk wrote: > On 22-Apr-15 18:15, James Kuyper wrote: >> On 04/22/2015 06:35 PM, Stephen Sprunk wrote: .... ... >>> One I do have problems with is Volt-Amps vs Watts; I learned long >>> ago that 1V*1A = 1VA = 1W, but when I used that in some online >>> discussions, I was told that only applied if you assume something >>> called "unity", which of course didn't apply to the problem at >>> hand. Argh! >> >> For DC electronics, Power (Watts) = Voltage (Volts) * Current >> (Amps). For alternating current, that formula remains true >> instantaneously, but you need to integrate over one entire cycle and >> divide by the length of that cycle to determine the net power >> transmitted. If V and A are the amplitudes of sinusoidally >> oscillating voltage and current, the value of that integral is >> proportional to V*A by a factor that depends upon the phase shift >> between the voltage and the current. I'd have to think harder than I >> have time for to give you the formula for that factor. If the voltage >> and current are NOT simple sinusoids, in general it gets even more >> complicated. True square waves are easy to evaluate - but hard to >> achieve in real life. > > Ah, so "unity" refers to having no phase shift between the two? If you're talking about the amplitude of the power transmitted, rather than the average power, that would be correct. > I didn't realize there could/would be any phase shift at all, so that > explains my problem. With alternating current, any capacitance or inductance can introduce a phase shift, in opposite directions - with careful balancing, they can cancel each other out.
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| From | Stephen Sprunk <stephen@sprunk.org> |
|---|---|
| Date | 2015-04-23 14:12 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mhbg5e$2nu$1@dont-email.me> |
| In reply to | #60917 |
On 23-Apr-15 11:54, James Kuyper wrote: > On 04/23/2015 12:05 PM, Stephen Sprunk wrote: >> On 22-Apr-15 18:15, James Kuyper wrote: >>> On 04/22/2015 06:35 PM, Stephen Sprunk wrote: .... > .... >>>> One I do have problems with is Volt-Amps vs Watts; I learned long >>>> ago that 1V*1A = 1VA = 1W, but when I used that in some online >>>> discussions, I was told that only applied if you assume something >>>> called "unity", which of course didn't apply to the problem at >>>> hand. Argh! >>> >>> For DC electronics, Power (Watts) = Voltage (Volts) * Current >>> (Amps). For alternating current, that formula remains true >>> instantaneously, but you need to integrate over one entire cycle and >>> divide by the length of that cycle to determine the net power >>> transmitted. If V and A are the amplitudes of sinusoidally >>> oscillating voltage and current, the value of that integral is >>> proportional to V*A by a factor that depends upon the phase shift >>> between the voltage and the current. I'd have to think harder than I >>> have time for to give you the formula for that factor. If the voltage >>> and current are NOT simple sinusoids, in general it gets even more >>> complicated. True square waves are easy to evaluate - but hard to >>> achieve in real life. >> >> Ah, so "unity" refers to having no phase shift between the two? > > If you're talking about the amplitude of the power transmitted, rather > than the average power, that would be correct. Hmm. I don't really understand the distinction there, but I'm not sure I'd understand further explanation either unless you can really dumb it down. And I appreciate your efforts to do so above :) >> I didn't realize there could/would be any phase shift at all, so that >> explains my problem. > > With alternating current, any capacitance or inductance can introduce a > phase shift, in opposite directions - with careful balancing, they can > cancel each other out. Is that the "power factor correction" that I've been hearing about recently (AIUI, related to the growth in switching power supplies and other non-linear loads) or yet another problem? S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Date | 2015-04-23 15:50 -0400 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <55394D05.7090808@verizon.net> |
| In reply to | #60932 |
On 04/23/2015 03:12 PM, Stephen Sprunk wrote:
> On 23-Apr-15 11:54, James Kuyper wrote:
...
>> If you're talking about the amplitude of the power transmitted, rather
>> than the average power, that would be correct.
>
> Hmm. I don't really understand the distinction there, but I'm not sure
> I'd understand further explanation either unless you can really dumb it
> down. And I appreciate your efforts to do so above :)
I should have said "maximum" rather than amplitude. Note: interpret the
following equations as mathematical, not C code.
Given:
V(t) = V0 * cos(omega*t + phi)
A(t) = A0 * cos(omega*t + phi)
Where V(t) is the instantaneous voltage at time t. V0 is the amplitude
of the voltage. omega and phi are constants. Similar statements apply to
A(t) and A0.
Then:
P(t) = V(t)*A(t) = A0*V0 * cos^2(omega*t+phi);
Where P(t) is the instantaneous power at time t. A0*V0 is the maximum
value of P(t), while the average power is, in this case, exactly 1/2 of
that. People forgetting about that factor of 1/2 have caused a LOT of
confusion, in my limited experience.
>>> I didn't realize there could/would be any phase shift at all, so that
>>> explains my problem.
>>
>> With alternating current, any capacitance or inductance can introduce a
>> phase shift, in opposite directions - with careful balancing, they can
>> cancel each other out.
>
> Is that the "power factor correction" that I've been hearing about
> recently (AIUI, related to the growth in switching power supplies and
> other non-linear loads) or yet another problem?
I had forgotten that term (if, indeed, I ever knew it), but a quick look
at the wikipedia article for "power factor" suggests that you are correct.
My knowledge of electronics stems from undergraduate Physics courses I
took more than 3 decades ago - I remember what I learned pretty well,
but I've supplemented that knowledge with only small amounts of
real-world experience. I was trained primarily as a theoretical
physicist, not an experimentalist, and ended up with a career in
scientific computer programming instead. Therefore, while I work with
lots of electronics, I have absolutely no need to ever measure a voltage.
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| From | Stephen Sprunk <stephen@sprunk.org> |
|---|---|
| Date | 2015-04-23 16:43 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mhbp0s$6d1$1@dont-email.me> |
| In reply to | #60940 |
On 23-Apr-15 14:50, James Kuyper wrote: > I should have said "maximum" rather than amplitude. Note: interpret > the following equations as mathematical, not C code. > > Given: > V(t) = V0 * cos(omega*t + phi) > A(t) = A0 * cos(omega*t + phi) > > Where V(t) is the instantaneous voltage at time t. V0 is the > amplitude of the voltage. omega and phi are constants. Similar > statements apply to A(t) and A0. > > Then: > P(t) = V(t)*A(t) = A0*V0 * cos^2(omega*t+phi); > > Where P(t) is the instantaneous power at time t. A0*V0 is the > maximum value of P(t), while the average power is, in this case, > exactly 1/2 of that. People forgetting about that factor of 1/2 have > caused a LOT of confusion, in my limited experience. But voltages are usually given as nominal RMS, which you multiply by √2 to get peak voltage, right? Assuming the same applies to the current, then that seems to cancel out the factor of 1/2 above: P = Vpeak * Apeak / 2 P = Vrms * √2 * Arms * √2 / 2 P = Vrms * Arms * 2/2 P = Vrms * Arms My toaster is marked "120V 800W", so if I'm doing the math right, the RMS current should be 6.7A--but only because it's a linear load and thus power factor doesn't come into play? IOW, doing the same math for my TV would give the wrong answer since it has a switching power supply? S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Date | 2015-04-23 18:09 -0400 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <55396D83.3060000@verizon.net> |
| In reply to | #60956 |
On 04/23/2015 05:43 PM, Stephen Sprunk wrote: > On 23-Apr-15 14:50, James Kuyper wrote: >> I should have said "maximum" rather than amplitude. Note: interpret >> the following equations as mathematical, not C code. >> >> Given: >> V(t) = V0 * cos(omega*t + phi) >> A(t) = A0 * cos(omega*t + phi) >> >> Where V(t) is the instantaneous voltage at time t. V0 is the >> amplitude of the voltage. omega and phi are constants. Similar >> statements apply to A(t) and A0. >> >> Then: >> P(t) = V(t)*A(t) = A0*V0 * cos^2(omega*t+phi); >> >> Where P(t) is the instantaneous power at time t. A0*V0 is the >> maximum value of P(t), while the average power is, in this case, >> exactly 1/2 of that. People forgetting about that factor of 1/2 have >> caused a LOT of confusion, in my limited experience. > > But voltages are usually given as nominal RMS, which you multiply by √2 > to get peak voltage, right? Assuming the same applies to the current, > then that seems to cancel out the factor of 1/2 above: Which is a strong motivation for using that convention. Uncertainty about whether or not that convention is being used can cause a lot of confusion. > P = Vpeak * Apeak / 2 > P = Vrms * √2 * Arms * √2 / 2 > P = Vrms * Arms * 2/2 > P = Vrms * Arms > > My toaster is marked "120V 800W", so if I'm doing the math right, the > RMS current should be 6.7A--but only because it's a linear load and thus > power factor doesn't come into play? IOW, doing the same math for my TV > would give the wrong answer since it has a switching power supply? You're getting into questions too practical for my level of expertise.
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| From | "Osmium" <r124c4u102@comcast.net> |
|---|---|
| Date | 2015-04-22 13:15 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <cpq6p9F3ueU1@mid.individual.net> |
| In reply to | #60750 |
"Stephen Sprunk" wrote: > One that really frustrates me is the "kilowatt-hour" since it would be > trivial to use Joules instead. Ditto for measuring natural gas in ccf > (100 cu ft) vs. liters. Utilities could just as easily switch to metric > units and nobody would care; most wouldn't even notice! For another layer of confusion the actual billing is based on therms, reflecting the heat content of a cubic foot or so of the natural gas currently in use; which is a function of the well being used. At least, this was true in the state I lived in several years ago. The practical figure I recall for that time and place was 115 BTUs per cubic foot. Which is not what a therm is. And we should not forget the 2"x2" slide, which contained an image on a 35 mm piece of film. Or the 3 1/2" disk which is actually 90 mm. I would guess that less than 10% of Americans have any idea of what a nasty unit the calorie is. One of the very few words with which you cannot start an English sentence.
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| From | gazelle@shell.xmission.com (Kenny McCormack) |
|---|---|
| Date | 2015-04-22 19:17 +0000 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mh8s4r$4a4$1@news.xmission.com> |
| In reply to | #60771 |
In article <cpq6p9F3ueU1@mid.individual.net>, Osmium <r124c4u102@comcast.net> wrote: ... >I would guess that less than 10% of Americans have any idea of what a >nasty unit the calorie is. One of the very few words with which you cannot >start an English sentence. Calorie counting is for the birds. See .sig. -- Calories (noun) - Tiny creatures that live in your closet and sew your clothes a little bit tighter every night.
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| From | Richard Heathfield <rjh@cpax.org.uk> |
|---|---|
| Date | 2015-04-22 20:48 +0100 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mh8tt5$5jj$1@dont-email.me> |
| In reply to | #60771 |
On 22/04/15 19:15, Osmium wrote: > Or the 3 1/2" disk which is actually 90 mm. To be more precise, it was defined to be "not /quite/ as wide as a shirt pocket". -- Richard Heathfield Email: rjh at cpax dot org dot uk "Usenet is a strange place" - dmr 29 July 1999 Sig line 4 vacant - apply within
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| From | "Osmium" <r124c4u102@comcast.net> |
|---|---|
| Date | 2015-04-23 08:11 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <cps9cuFg0vfU1@mid.individual.net> |
| In reply to | #60784 |
"Richard Heathfield" wrote: > On 22/04/15 19:15, Osmium wrote: > >> Or the 3 1/2" disk which is actually 90 mm. > > To be more precise, it was defined to be "not /quite/ as wide as a shirt > pocket". An American shirt or a European shirt? Since we can't agree on something as fundamental as "How big is a piece of "A" sized paper" I assume shirt pockets would also be a problem.
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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Date | 2015-04-23 12:58 -0400 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <553924C7.90802@verizon.net> |
| In reply to | #60883 |
On 04/23/2015 09:11 AM, Osmium wrote: > "Richard Heathfield" wrote: > >> On 22/04/15 19:15, Osmium wrote: >> >>> Or the 3 1/2" disk which is actually 90 mm. >> >> To be more precise, it was defined to be "not /quite/ as wide as a shirt >> pocket". > > An American shirt or a European shirt? Since we can't agree on something as > fundamental as "How big is a piece of "A" sized paper" I assume shirt > pockets would also be a problem. Do American or European shirts even exist anymore? Every shirt I've been able to buy for many decades now was made somewhere else - the places I remember include China, India, Indonesia, and at least one Caribbean island.
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| From | Robert Wessel <robertwessel2@yahoo.com> |
|---|---|
| Date | 2015-04-23 14:13 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <e0hijatg641rine5bup27v7h43p18c1tod@4ax.com> |
| In reply to | #60918 |
On Thu, 23 Apr 2015 12:58:47 -0400, James Kuyper <jameskuyper@verizon.net> wrote: >On 04/23/2015 09:11 AM, Osmium wrote: >> "Richard Heathfield" wrote: >> >>> On 22/04/15 19:15, Osmium wrote: >>> >>>> Or the 3 1/2" disk which is actually 90 mm. >>> >>> To be more precise, it was defined to be "not /quite/ as wide as a shirt >>> pocket". >> >> An American shirt or a European shirt? Since we can't agree on something as >> fundamental as "How big is a piece of "A" sized paper" I assume shirt >> pockets would also be a problem. > >Do American or European shirts even exist anymore? Every shirt I've been >able to buy for many decades now was made somewhere else - the places I >remember include China, India, Indonesia, and at least one Caribbean island. Sure - the design/style is orthogonal to the place of manufacture.
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| From | raltbos@xs4all.nl (Richard Bos) |
|---|---|
| Date | 2015-04-25 10:08 +0000 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <553b654f.8464890@news.xs4all.nl> |
| In reply to | #60883 |
"Osmium" <r124c4u102@comcast.net> wrote: > An American shirt or a European shirt? Since we can't agree on something as > fundamental as "How big is a piece of "A" sized paper" I assume shirt > pockets would also be a problem. Erm, we _can_ agree on how big a piece of A-sized paper is. A4 is 297x210, give or take fixed tolerances which I can't be bothered to look up because I've never seen a piece of A4 differ by more than 1 mm either way. What we _can't_ agree on is whether to use A4 or PC Load Letter. Richard
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| From | Stephen Sprunk <stephen@sprunk.org> |
|---|---|
| Date | 2015-04-22 17:15 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mh96fm$c6o$1@dont-email.me> |
| In reply to | #60771 |
On 22-Apr-15 13:15, Osmium wrote: > "Stephen Sprunk" wrote: >> One that really frustrates me is the "kilowatt-hour" since it would >> be trivial to use Joules instead. Ditto for measuring natural gas >> in ccf (100 cu ft) vs. liters. Utilities could just as easily >> switch to metric units and nobody would care; most wouldn't even >> notice! > > For another layer of confusion the actual billing is based on > therms, reflecting the heat content of a cubic foot or so of the > natural gas currently in use; which is a function of the well being > used. At least, this was true in the state I lived in several years > ago. The practical figure I recall for that time and place was 115 > BTUs per cubic foot. Which is not what a therm is. My gas bill has a rate in cents per ccf. Maybe they're actually calculating it per therm and adjusting the per-ccf rate, though; it's hard to tell since the rate varies from month to month anyways, just like the cents per kWh for electricity. (Same company, same bill.) > I would guess that less than 10% of Americans have any idea of what a > nasty unit the calorie is. One of the very few words with which you > cannot start an English sentence. Calorie is a nasty unit. Or is that cheating since it's a "mention" rather than a "use"? Or were you pointing out the bizarre distinction between calories and Calories (aka kilocalories)? S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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| From | raltbos@xs4all.nl (Richard Bos) |
|---|---|
| Date | 2015-04-25 09:18 +0000 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <553b5b31.5875000@news.xs4all.nl> |
| In reply to | #60750 |
Stephen Sprunk <stephen@sprunk.org> wrote: > One that really frustrates me is the "kilowatt-hour" since it would be > trivial to use Joules instead. kWh _is_ metric. It's even SI - not an official unit, but a normal combination of two normal units. And for home use it's more meaningful than a Joule a.k.a. Watt-second; after all, you leave appliances and lamps on for hours, not seconds. Richard
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| From | Stephen Sprunk <stephen@sprunk.org> |
|---|---|
| Date | 2015-04-25 13:02 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mhgkqm$vd2$1@dont-email.me> |
| In reply to | #61054 |
On 25-Apr-15 04:18, Richard Bos wrote: > Stephen Sprunk <stephen@sprunk.org> wrote: >> One that really frustrates me is the "kilowatt-hour" since it would >> be trivial to use Joules instead. > > kWh _is_ metric. It's even SI - not an official unit, but a normal > combination of two normal units. There's already a simpler unit for energy (i.e. power over time), so why invent a new composite unit that does exactly the same thing? > And for home use it's more meaningful than a Joule a.k.a. Watt-second; > after all, you leave appliances and lamps on for hours, not seconds. But few (if any) of my appliances require kilowatts of power, and there are fewer than 1000 hours per month, so it's not all that useful. If I want to figure out the cost of using of a device, I already have the wattage (or voltage times amperage, which is close enough for most purposes), so calculating the number of Joules I'm using is easier than calculating the number of kilowatt-hours, which is effectively the same effort as calculating the number of Joules and _then_ dividing by 3,600,000. Also, if you're going to play the "usefulness" card, you might as well give up on SI entirely and go back to traditional units. The whole basis of SI is that usefulness is not as important as easy math. S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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| From | Richard Heathfield <rjh@cpax.org.uk> |
|---|---|
| Date | 2015-04-26 14:26 +0100 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mhip05$pua$2@dont-email.me> |
| In reply to | #61095 |
On 25/04/15 19:02, Stephen Sprunk wrote: > On 25-Apr-15 04:18, Richard Bos wrote: >> Stephen Sprunk <stephen@sprunk.org> wrote: >>> One that really frustrates me is the "kilowatt-hour" since it would >>> be trivial to use Joules instead. >> >> kWh _is_ metric. It's even SI - not an official unit, but a normal >> combination of two normal units. > > There's already a simpler unit for energy (i.e. power over time), Actually, power is energy over time. Energy is power multiplied by time. > If I want to figure out the cost of using of a device, I already have > the wattage (or voltage times amperage, which is close enough for most > purposes), so calculating the number of Joules I'm using is easier than > calculating the number of kilowatt-hours, Here, I would heartily agree with you. <snip> -- Richard Heathfield Email: rjh at cpax dot org dot uk "Usenet is a strange place" - dmr 29 July 1999 Sig line 4 vacant - apply within
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| From | Philip Lantz <prl@canterey.us> |
|---|---|
| Date | 2015-05-03 11:48 -0700 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <MPG.2fb00d61602ca9f219@news.eternal-september.org> |
| In reply to | #61133 |
Richard Heathfield wrote: > Stephen Sprunk wrote: > > There's already a simpler unit for energy (i.e. power over time), > > Actually, power is energy over time. Energy is power multiplied by time. He didn't mean energy is power divided by time. He meant that energy is "power [integrated] over [a period of] time".
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| From | Richard Heathfield <rjh@cpax.org.uk> |
|---|---|
| Date | 2015-05-05 18:20 +0100 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <miau2m$qr4$1@dont-email.me> |
| In reply to | #61450 |
On 03/05/15 19:48, Philip Lantz wrote: > Richard Heathfield wrote: >> Stephen Sprunk wrote: >> > There's already a simpler unit for energy (i.e. power over time), >> >> Actually, power is energy over time. Energy is power multiplied by time. > > He didn't mean energy is power divided by time. He meant that energy is > "power [integrated] over [a period of] time". That is, then, yet another example of how easy it can be (on occasion) for a writer to write in what he (or, of course, she) believes to be completely unambiguous terms and yet be 100% misunderstood. My apologies to Stephen. I ought to have made a better attempt to understand what he was saying. It is, however, a cautionary episode about language usage in science (and indeed in programming). I recall that the subject of fflush(stdin) was raised a few years ago here in clc, with the OP of the thread in question saying that his book told him to use fflush(stdin). A closer reading of the book actually made it crystal clear[1] that the author[2] was saying that one should *not* do this, and that to do so rendered the behaviour of the program undefined. It's hard for me to see how the text could be misinterpreted, and yet misinterpreted it was. [1] Okay, apparently not /quite/ crystal clear. [2] Yep. -- Richard Heathfield Email: rjh at cpax dot org dot uk "Usenet is a strange place" - dmr 29 July 1999 Sig line 4 vacant - apply within
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| From | Stephen Sprunk <stephen@sprunk.org> |
|---|---|
| Date | 2015-05-05 12:43 -0500 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <miave8$pc$1@dont-email.me> |
| In reply to | #61572 |
On 05-May-15 12:20, Richard Heathfield wrote: > On 03/05/15 19:48, Philip Lantz wrote: >> Richard Heathfield wrote: >>> Stephen Sprunk wrote: >>>> There's already a simpler unit for energy (i.e. power over >>>> time), >>> >>> Actually, power is energy over time. Energy is power multiplied >>> by time. >> >> He didn't mean energy is power divided by time. He meant that >> energy is "power [integrated] over [a period of] time". > > That is, then, yet another example of how easy it can be (on > occasion) for a writer to write in what he (or, of course, she) > believes to be completely unambiguous terms and yet be 100% > misunderstood. > > My apologies to Stephen. I ought to have made a better attempt to > understand what he was saying. It is, however, a cautionary episode > about language usage in science (and indeed in programming). Thanks, and my apologies for not realizing the alternative reading of that phrase; I do try to avoid such ambiguity whenever possible. To modify an old joke, "If something we said can be interpreted two ways, and one of the ways [is incorrect], we meant the other one." S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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| From | Bartc <bc@freeuk.com> |
|---|---|
| Date | 2015-04-22 11:32 +0100 |
| Subject | Re: The Metric system (Was: Problems with va_list & friends...) |
| Message-ID | <mh7tai$rde$1@dont-email.me> |
| In reply to | #60709 |
On 22/04/2015 09:47, David Brown wrote: > On 21/04/15 19:09, Bartc wrote: >> On 21/04/2015 16:58, Greg Martin wrote: >>> On 2015-04-21, Kenny McCormack <gazelle@shell.xmission.com> wrote: >> >>>> Incidentally, Canada almost succeeded in switching, but failed >>>> because of >>>> the great influence US practice has on their policies. The result is an >>>> ugly mishmash, where some things are quoted in metric and other >>>> things are >>>> quoted in US units. It must be very confusing for them... >>>> >>> >>> We did switch and a long time ago. I can't think of any area where >>> imperial measurements are used though some of us of a certain age may >>> have mentally flip-flopped at times. If you are under 40 and Canadian I >>> doubt you would have used imperial measure for anything. >> >> What do you ask for in a Subway, a foot-long sub or a 30.48cm-long one? >> >> What size screen are you looking at now, a 23" (or whatever), or a 58 cm >> one? >> >> Do people still join the mile-high club, is it now the 1.61km-high one? >> Etc. Imperial is still around. >> > > People in most countries use imperial measurements for some rough > descriptions - but they /measure/ in metric. Even in thoroughly metric > Norway, there are some things that are described in imperial units, > especially things which came from (or used to come from) the USA or the > UK. So screens are classified in inches, and small boats are given in feet. > > Even in the UK, where people still buy beer in pints and the older > generation use Fahrenheit for warm days (but Celsius when it is below > freezing), measurements are almost always metric unless they are dealing > with Americans. > In the UK they still use a mixture even though officially we are supposed to be metric. Miles for road signs and speed limits (offically). Feet/inches for height (informally). Stone(s) for weight. Inches for waist size. Pounds and ounces are less used but still hanging on (with products still coming as 227g or 454g sizes!). Milk is also sold by the pint as well as in litres. And there are many, many things which are marked as metric, but are obviously an imperial size: a 1.8m by 0.6m board is clearly 6 x 2 feet (that reminds me I still have to fit that bath panel!). (The fact is that imperial can be better for everyday life, it's not just because we're used to them. The units are often just right, and sub-units (inches, feet and yards for example) have different proportions will stops them getting mixed up.) -- Bartc
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