planteen

79 ms·

751.
by planteen 10y ago
I'd say my example demonstrates the spec's statement: "A pointer to an object type may be converted to a pointer to a different object type. If the resulting pointer is not correctly aligned for the referenced type, the behav
752.
by planteen 10y ago
That might not necessarily work. If you have something like: >> uint8_t x[100]; >> uint32_t *y = &x[1]; And then dereference y, most RISC architectures will trap on the unaligned access. It doesn't matter if there is an
753.
by planteen 10y ago
This is true. Dealing with a crappy parking situation when I was younger taught me that I never want to deal with it again. It's not fun having to park far away when you have a load of groceries in the snow.
754.
by planteen 10y ago
This is true. My block in Denver is weird in that the alley only goes half way down it. So half of the block has no driveways since they have an alley and the other half has driveways. The width is like everyone has driveways. It's kin
755.
by planteen 10y ago
That's true but at the end of the day it's fine as long as you aren't using those constructs for serialization/deserialization of data between machines. Rob Pike has a very good post about how Plan 9 needed no endian spe
756.
by planteen 10y ago
The thing about speculative execution and out of order execution to remember is that you always get the expected result from a single threaded perspective. If you throw in interrupts or threads, you know you must tread cautiously in C. Few
757.
by planteen 10y ago
There's a $99 z-turn board that is comparable to the Pi (HDMI output, better CPU, not to mention programmable logic, and uses the Zynq.
758.
by planteen 10y ago
Which board did you buy? Most of them (Zedboard, Zybo, MicroZed) come with a Linux kernel already burned in QSPI flash. Make sure the jumpers are set for QSPI boot (not SD card). Plug in to the USB serial CDC port to see the prints. The sys
759.
by planteen 10y ago
Xilinx Vivado Webpack is free. The SDK is free. Petalinux is free. I have professionally done Zynq development where the whole company used those free tools and we didn't have a single paid Xilinx tool. I mean free as in cost, not open
760.
by planteen 10y ago
I can't wait to work through this. I agree so much with this philosophy: "I do not want to show how to write applications for OpenGL. I want to show how OpenGL works. I am deeply convinced that it is impossible to write efficient
761.
by planteen 10y ago
Lots of areas are important. Every job I have worked has had a specific math specializations that were important. Reed-Solomon codes are used in storage and communication systems. They make use of abstract algebra (finite/Galois fields
762.
by planteen 10y ago
I've wondered the same thing. For avionics, you have PhDs in control theory doing most of the algorithm development with Kalman filters and such.
763.
by planteen 10y ago
You are going to have high market cap per employee in asset rich companies like oil producers and REITs. The value in those cases is primarily the mineral and real estate assets, not the employees, so tying salaries to it doesn't make
764.
by planteen 10y ago
Abundance in Earth's crust doesn't help at all during a supply crunch. Bringing a mine up takes at least 5 years. And your mine is going to be on an orebody, not just processing random rocks. Cobalt is another critical element for
765.
by planteen 10y ago
You also need serial ports today for low level kernel debugging, hardware bring up, and embedded systems. I have worked for 5 different companies over my career doing embedded systems. Serial ports were important in 5/5 companies.
766.
by planteen 10y ago
The big Unix vendors in the 90s were pretty good at both... PA-RISC & HP-UX, SPARC & Solaris, Alpha & Tru64
767.
by planteen 10y ago
I worked for a few years on storage at HP. They had the EVA, 3PAR, and Lefthand product lines when I was there. Though HP sold them as storage array hardware, the primary expense was engineering the software, not the hardware. The EVA was a
768.
by planteen 10y ago
This looks very interesting. Seems like a similar story to H. P. Lovecraft.
769.
by planteen 10y ago
You can get up to 30 kW (pulsed) on a MRI all directed at your body.
770.
by planteen 10y ago
This is a good question. There could be substantial damage. The Antares failure at Wallops knocked the pad out for months and took $15 million to repair. https://spaceflightnow.com/2015/10/06/workers-complete-
771.
by planteen 10y ago
That might work for food in the freezer, as long as you don't live in an area with wildlife like bears and raccoons. It seems like a huge market for this would be off-grid people, who are going to live in the country where such animals
772.
by planteen 10y ago
I took a screenshot of the page for when (not if) it is changed
773.
by planteen 10y ago
I've never heard of it either other than for executives with golden parachutes
774.
by planteen 10y ago
Yep. Just looked at the Wrkriot Facebook page. Previous posts have the old name... and the Spongebob memes
775.
by planteen 10y ago
....or a winter storm that lasts a few days.
776.
by planteen 10y ago
Do you have any examples of open source initiatives you are excited about? I used to work in small sat. Two open source projects that were exciting to me when in the industry: http://cosmosrb.com/ https://cfs.gsf
777.
by planteen 10y ago
Haha, didn't know that. I figured an engineer had a kid with an affinity for Old MacDonald.
778.
by planteen 10y ago
Wow that's pretty good. My other favorite mnemonic is also from PowerPC 'eieio' - enforce in-order execution of I/O.
779.
by planteen 10y ago
Sure. Obviously all of this depends if the context is git or the kernel. But Linus (in context of the kernel) cares more about the 1% than the average person, for things like atomics, mutexes, etc.
780.
by planteen 10y ago
Oh gotcha... I interpreted Linus's comment about archs. Boost is supported on far less archs than the Linux kernel is: http://www.boost.org/doc/libs/master/libs/context/doc/html/c...

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