Documentation: http://people.csail.mit.edu/jaffer/slib/Byte_002fNumber-Conversions.html#Byte_002fNumber-Conversions
To use: (import (slib byte-number))
For more information including compatibility, examples and test cases, see https://github.com/petercrlane/r7rs-libs
Note: Some implementations fail conversions of some of the extreme values, for example representations of infinity or smallest possible numbers in range.