blackjacksepp

blackjacksepp , 5 months ago

From the documentation (emphasis mine):

If the floating literal begins with the character sequence 0x or 0X, the floating literal is a hexadecimal floating literal. Otherwise, it is a decimal floating literal.

For a hexadecimal floating literal, the significand is interpreted as a hexadecimal rational number, and the digit-sequence of the exponent is interpreted as the (decimal) integer power of 2 by which the significand has to be scaled.

double d = 0x1.4p3; // hex fraction 1.4 (decimal 1.25) scaled by 2^3, that is 10.0

You can find the full documentation here: cppreference.com

So in your example 0x1P1 means 116 * 2^(110) = 2

blackjacksepp , 5 months ago

It’s a C++17 feature that allows specifying a power of two (as decimal exponent) by which the fractional part should be multiplied.

blackjacksepp , 5 months ago

Yeah, you could express it like that

blackjacksepp , 5 months ago

There is decimal scientific notation for specifying a decimal exponent already (123e4 = 123×10^4).

And I don’t know why the committee preferred base 2 over base 16, I think it really depends on the use case which one is more useful.

blackjacksepp , 8 months ago

Isn’t this how it always looked when treeview is enabled? Look for the option in the View dropdown menu.

blackjacksepp , 11 months ago

Have a look at nginx vts. I run it on my Raspberry Pi, it works great and provides everything I need! The auto-installer is easy to use and it can output as html, json or prometheus.

blackjacksepp , 11 months ago

I am currently running

• Nextcloud: slow, but great for Calendar or Notes
• Gonic
• Airsonic Refix
• transfer.sh
• FileBrowser
• Conduit
• Cinny
• Mosquitto
• Prometheus
• Grafana

The last three are quite niche. I use Prometheus + Grafana for Monitoring the Pi itself and for displaying MQTT Stats. Since upgrading to SSDs performance is actually quite good, especially when taking power usage into account.