[vox-tech] makefile question - auto dependencies

2003-03-21 Thread Peter Jay Salzman
i was playing around with auto-dependencies with makefiles the other day. here's a hello world example of the technique: TARGET = hello_world CFLAGS = -W -Wall -g OBJS = $(patsubst %.c, %.o, $(wildcard *.c)) SRCS = $(wildcard *.c) LDLIBS = -lm DEPDIR = .deps vpath %.d

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Micah J. Cowan
On Thu, Mar 20, 2003 at 04:52:15PM -0800, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 10:15:43AM -0800, Tim Riley wrote: The first library had malloc(). Always using calloc() would be a ridiculously inefficient way to obtain memory if you're going to

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Tim Riley
Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 04:52:15PM -0800, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 10:15:43AM -0800, Tim Riley wrote: snip The vulnerability with malloc() occurs when working with pointers. It's common to test if a pointer has

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Micah J. Cowan
On Fri, Mar 21, 2003 at 11:22:56AM -0800, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 04:52:15PM -0800, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 10:15:43AM -0800, Tim Riley wrote: snip The vulnerability with malloc()

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Jeff Newmiller
On Fri, 21 Mar 2003, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 04:52:15PM -0800, Tim Riley wrote: Micah J. Cowan wrote: On Thu, Mar 20, 2003 at 10:15:43AM -0800, Tim Riley wrote: snip The vulnerability with malloc() occurs when working

Re: [vox-tech] makefile question - auto dependencies

2003-03-21 Thread Mike Simons
On Fri, Mar 21, 2003 at 10:18:21AM -0800, Peter Jay Salzman wrote: i was playing around with auto-dependencies with makefiles the other day. here's a hello world example of the technique: OBJS = $(patsubst %.c, %.o, $(wildcard *.c)) SRCS = $(wildcard *.c) should use SRCS in OBJS

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Micah J. Cowan
On Fri, Mar 21, 2003 at 01:01:39PM -0800, Jeff Newmiller wrote: And I submit that without the core dump, the bug of having forgotten to set *person's fields just got much, much harder to track down. Core dumps are useful for tracking down bugs. While I am not very comfortable

Re: [vox-tech] makefile question - auto dependencies

2003-03-21 Thread Peter Jay Salzman
begin Mike Simons [EMAIL PROTECTED] On Fri, Mar 21, 2003 at 10:18:21AM -0800, Peter Jay Salzman wrote: i was playing around with auto-dependencies with makefiles the other day. here's a hello world example of the technique: OBJS = $(patsubst %.c, %.o, $(wildcard *.c)) SRCS

[vox-tech] OT - Finding slope of a line, with lots of points

2003-03-21 Thread Jay Strauss
Sorry, I already googled, but can't find what I'm looking for. I remember back in science class (must have been Chem), we'd do experiments and plot a bunch of points on graph paper. Then we'd fudge a line that went thru the points (trying to get equal numbers of points on one side of the line as

Re: [vox-tech] OT - Finding slope of a line, with lots of points

2003-03-21 Thread Rod Roark
least squares. -- Rod On Friday 21 March 2003 01:52 pm, Jay Strauss wrote: Sorry, I already googled, but can't find what I'm looking for. I remember back in science class (must have been Chem), we'd do experiments and plot a bunch of points on graph paper. Then we'd fudge a line that went

Re: [vox-tech] OT - Finding slope of a line, with lots of points

2003-03-21 Thread Matt Roper
I think you're referring to linear regression -- try doing a Google search on that and you should find lots of algorithms and implementations. Matt On Fri, Mar 21, 2003 at 03:52:35PM -0600, Jay Strauss wrote: Sorry, I already googled, but can't find what I'm looking for. I remember back in

Re: [vox-tech] OT - Finding slope of a line, with lots of points

2003-03-21 Thread Jay Strauss
Okay doky Thanks Jay - Original Message - From: Matt Roper [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, March 21, 2003 4:17 PM Subject: Re: [vox-tech] OT - Finding slope of a line, with lots of points I think you're referring to linear regression -- try doing a Google search

[vox-tech] Remove from List

2003-03-21 Thread Bradford MacLane
Please remove me from the List Thanks

Re: [vox-tech] OT - Finding slope of a line, with lots of points

2003-03-21 Thread Peter Jay Salzman
hi jay, that's called the best fit line, least squares, or linear regression. i'm sure you can find it on google. the main idea is: 1. draw an abstract line that represents the best fit with no spcified slope and y intercept. 2. compute the sum of the distances of each data point to the

Re: [vox-tech] Remove from List

2003-03-21 Thread Peter Jay Salzman
hi brad, here is the form you use to unsubscribe: http://lists.lugod.org/mailman/listinfo/vox-tech/ here is the frequently asked question answer of how to unsubscribe: http://lists.lugod.org/documents/faq/lugod-faq.html#AEN205 if you decide to stay, please configure your mail client

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Tim Riley
Jeff Newmiller wrote: On Fri, 21 Mar 2003, Tim Riley wrote: snip Especially this one by the author of the FreeBSD C Library (last paragraph): http://groups.google.com/groups?q=NULL+calloc()+group:comp.lang.c+author:Chris+author:Torekselm=18764%40dog.ee.lbl.gov Tim, I

Re: [vox-tech] malloc() is ... old school?

2003-03-21 Thread Micah J. Cowan
On Fri, Mar 21, 2003 at 02:45:37PM -0800, Tim Riley wrote: Jeff Newmiller wrote: On Fri, 21 Mar 2003, Tim Riley wrote: snip Especially this one by the author of the FreeBSD C Library (last paragraph):

Re: [vox-tech] Remove from List

2003-03-21 Thread Jay Strauss
These remove me messages always make me laugh Pete, thanks for the detailed least squares answer, unfortunately it went over my head, my house, and is heading for Milwaukee. The last time I did any higher math, was when I was figuring out the tip at a non-standard 20% (I can do 10% but 20 throws

Re: [vox-tech] makefile question - auto dependencies

2003-03-21 Thread Mike Simons
On Fri, Mar 21, 2003 at 01:23:48PM -0800, Peter Jay Salzman wrote: begin Mike Simons [EMAIL PROTECTED] I used to use a nasty sed expression to make the .d files, but for some reason decided that they were not needed. yes again. :) and user supplied .h files as well. Here is a