Is there a way to pass binary representations of floating point numbers to
a SQL query? If sqlite's internal representation of floating point
numbers is 8-byte IEEE doubles, it would be convenient to be able to pass
the literal value of a float or double to the underlying SQL parser
without suffering the quantization that occurs with printf()'ing floating
point values.
One way I've accomplished this in the past with other interfaces is to
interpret a hex value as a binary literal that can be interpreted as a raw
4-byte or 8-byte IEEE floating-point value (either via a union or other
compiler trick). I understand you can *retrieve* a non-quantized value
using sqlite3_column_double(), but I don't see a way to set one without
having to printf() the floating point value.
Can this be done using sqlite3_bind_* interfaces, or do they quantize as
well? The documentation isn't clear on this. The goal is to copy the
straight 8-byte (or precision-extended 4-byte) IEEE value into the column
into the database (where the column is defined as a FLOAT) without having
to build a SQL statement that has an obscene number of digits in each
floating point field.
Thanks in advance.
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