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NNTP-Posting-Date: Fri, 07 Oct 2016 11:01:09 -0500
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Is there any place to talk about language features?
References: <d8b59afd-d77a-4769-9a17-b5df41c08a92@googlegroups.com> <e5d5rnFf4dbU1@mid.individual.net> <5def853b-2418-4f89-a7ad-3ea77b66b654@googlegroups.com> <e5e8kuFq0riU1@mid.individual.net> <47b562a1-78e4-4c20-86e5-e980954ab436@googlegroups.com> <e5fpdnF716rU1@mid.individual.net> <6f007f5a-7bc1-48d8-aa2b-549fa09e583c@googlegroups.com> <e5j7trF14chU1@mid.individual.net> <d5c247b4-0744-4c77-a03d-9ee3e8e7708c@googlegroups.com> <e5jgh2F38jcU1@mid.individual.net> <d7dd228d-0643-491b-b235-77b73efc671b@googlegroups.com> <e5k0cgF6qd1U1@mid.individual.net> <c0e0063a-f799-405d-8d5b-3022342d6f8c@googlegroups.com> <e5lrp7Fki0fU3@mid.individual.net> <2167a3c4-da6c-47f4-8169-5b6cc102036f@googlegroups.com> <e5luhcFkjf8U2@mid.individual.net> <31cf30f6-1b7a-4a27-bc79-44866f8473e5@googlegroups.com> <e5m4odFmb1oU1@mid.individual.net> <b83ecb7f-2eb5-44a7-ab6c-719c776e8f17@googlegroups.com> <4a66da60-0345-41f3-8f3d-6e9e1243e752@googlegroups.com> <37b0b934-8177-4b10-8f98-05ab8e60981b@googlegroups.com>
Date: Fri, 07 Oct 2016 17:01:09 +0100
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Xref: csiph.com comp.lang.c:94557

Malcolm McLean <malcolm.mclean5@btinternet.com> writes:

> On Thursday, October 6, 2016 at 3:34:08 PM UTC+1, gwowen wrote:
>> On Thursday, October 6, 2016 at 8:38:16 AM UTC+1, Malcolm McLean wrote:
>> 
>> > Everything that is a "calculation" can be and almost always should
>> > be expressed as a Malcolm-function. 
>> 
>> struct Matrix mat = generate_singular_matrix();
>> struct Matrix m2  = inverse(mat);
>> 
>> struct Vector y;
>> struct Matrix m = ill_conditioned_matrix();
>> struct Vector x = solve(m,y);
>> 
> If if write a function to invert a matrix, generally it's not 
> reasonable to specify that caller shall provide us with an 
> invertible matrix. We return 0 on success or -1 on fail, but
> "fail" here doesn't mean that the function has failed.

The defence rests, your honour.