Oct 082015
LabVIEW floating-point values use the IEEE-754 standard for storage and manipulation. A LV double is stored in eight bytes, a single uses four bytes. You can directly convert singles and doubles by wiring them to the ‘Type Cast’ primitive, found under Advanced->Data Manipulation palette. You’ll get a four- or eight-character string as output. (LV strings are the preferred representation for arbitrary byte stream data.)