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    1. COGCC computes constant expressions at compile time. Because `c` is just set at run time to the precomputed value, no loss of precision occurs. If you define the constants as `static const float A = 1.1f, B = 1.2f, C = 1.3f;` and compile with `-O0` (no optimizations), then GCC actually performs the multiplication `float c = A * B * C;`, and `FP_INEXACT` gets raised. With default optimizations GCC sees that `A`, `B`, and `C` are all constants, and precomputes the value into `c`, turning it from a multiplication into a plain assignment. You can see this if you compile to assembly `-S`.
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    2. COCould you provide a bit more details about the device? Does it support any standard protocols (maybe Telnet? HTTP?), and whether it provides streams of data (like audio/video), or just short responses to queries?
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      1. POWebserver from linux(debian) sends data to an Ip in a network
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    3. CO@demic0de: The same principle applies, even if Device is connected to Controller via Ethernet. (In that case, often Server and Controller are the same machine, but they don't have to be.) You don't necessarily need a Controller service, if the Device allows multiple concurrent accesses, or if you prevent that in the PHP on Server, and the Device responds in reasonable time. Detecting the Device is just probing: basically try a connection, and see if it works. (There are also protocols for local network device discovery, but it really depends on the Device, what it supports.)
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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