On 2023-08-21 17:31:06 -0400, Dave Cramer wrote: > On Mon, 21 Aug 2023 at 17:17, Ron <ronljohnso...@gmail.com> wrote: > > On 8/21/23 14:32, Dave Cramer wrote: > > [snip] > > It has to do with the way the data is being transferred. When the > driver switches to a named statement it also switches to binary mode > which means data will be transferred in binary. > > In text we get -1, in binary we get -1.0 > > > That seems odd. Why does it do that? [...] > whereas float8send sends the actual binary data on disk, hence -1.0
It should be noted that the binary representation is not "-1.0", but
something like
1 01111111 00000000000000000000000 (in binary or)
B F 8 0 0 0 0 0 (in hex)
(big endian for better readability)
The decimal representation "-1.0" is created by the binary to string
conversion (Java's Float.toString()?). That could also produce "-1" or
"-1E0" or any other equivalent representation. The author of that
routine decided in include ".0" in the output, possibly to signify that
it's a floating point value, not an integer.
hp
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