Digest for comp.lang.c++@googlegroups.com - 8 updates in 4 topics

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• Division by zero - 2 Updates
• Another difference between gcc and clang - 3 Updates
• Best way to use enum with classes - 2 Updates
• Division by zero - 1 Update

Division by zero

woodbrian77@gmail.com: Nov 02 11:49AM -0700 On Wednesday, November 2, 2016 at 3:05:42 AM UTC-5, David Brown wrote:   > > Count me out of the "rest of us", please. Studied theoretical physics > > too long. Thanks!   > Don't worry, I for one know that Mr. Flibble is using the "royal we".   That would be news to me.   Brian Ebenezer Enterprises - In G-d we trust. http://webEbenezer.net

Daniel <danielaparker@gmail.com>: Nov 02 01:59PM -0700 On Tuesday, November 1, 2016 at 3:40:56 PM UTC-4, Mr Flibble wrote:   > You obviously have a different idea as to what mathematics actually is > compared to the rest of us. Dividing by zero is undefined, period.   Flibblesticks. I'm assuming your university math background ended before the real analysis or abstract algebra courses.   Daniel

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Another difference between gcc and clang

Joost <joost@stack.nl>: Nov 02 04:08PM > clang says: > error: C++ requires a type specifier for all declarations   > gcc says nothing and just accepts it. I wonder what it's thinking.   Did something change? The ancient 4.8.4 I have to use says this:   error: ISO C++ forbids declaration of 'test' with no type [-fpermissive]   which looks useful enough to me.

Christian Gollwitzer <auriocus@gmx.de>: Nov 02 05:12PM +0100 Am 02.11.16 um 17:08 schrieb Joost:   > Did something change? The ancient 4.8.4 I have to use says this:   > error: ISO C++ forbids declaration of 'test' with no type [-fpermissive]   > which looks useful enough to me.   Maybe the error does not occur until you try to instantiate the template? (I've got no current gcc to check now)   Christian

"Öö Tiib" <ootiib@hot.ee>: Nov 02 10:37AM -0700 On Wednesday, 2 November 2016 18:08:40 UTC+2, Joost wrote:   > Did something change? The ancient 4.8.4 I have to use says this:   > error: ISO C++ forbids declaration of 'test' with no type [-fpermissive]   > which looks useful enough to me.   gcc version 6.1.0 is also complaining like that so it is unsure what gcc6 OP is using and with what options.

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Best way to use enum with classes

Jerry Stuckle <jstucklex@attglobal.net>: Oct 26 10:27PM -0400 On 10/26/2016 6:52 PM, Ian Collins wrote:   > No, QEMU *is* an emulator.   > "QEMU is a generic and open source machine emulator and virtualizer."   > http://wiki.qemu.org/Main_Page   So is RAID emulation. No difference.     >> Sure. But the code is in flash or other ROM, and not mixed in with user >> code - as I said. A huge difference.   > Ah, so now you agree that software RAID is RAID. Good start.   No, software RAID is a RAID emulator. Just like QEMU is an emulator.   >> There are many instances, especially recently, of entire networks being >> infected - including servers.   > Reference (assuming you aren't referring to Windows servers)?   Have you read the news lately? Nope, because I know you can't read.   >> on a RAID device. It can corrupt data, but only data allowed by file >> permissions.   > A rootkit can destroy everything.   Not if it isn't executed. But you wouldn't know that, either.   -- ================== Remove the "x" from my email address Jerry Stuckle jstucklex@attglobal.net ==================

"Chris M. Thomasson" <invalid@invalid.invalid>: Oct 29 03:17PM -0700 On 10/28/2016 2:28 PM, Jerry Stuckle wrote:   >> :^)   > Again having absolutely nothing to do with electrical charges. But it > seems trying to change the topic is a favorite pastime of yours.   FWIW, Hummm.. The flow of gravity wrt mass points, seems to flow in opposite directions wrt the flow of electrical charges. The arrows show flow direction.

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Division by zero

ram@zedat.fu-berlin.de (Stefan Ram): Oct 29 09:59PM C++ says:   »If during the evaluation of an expression, the result is not mathematically defined or not in the range of representable values for its type, the behavior is undefined.«, C++ 2016, 5p4 and   »If the second operand of / or % is zero the behavior is undefined.«, C++ 2016, 5.6p4.   Does it say anywhere that a division by zero /is/ allowed (is not undefined behavior) in floating-point divisions?

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