Back in the day, we had to write floating point routines before there was 80387. We had the appropriate chapter of TAOCP open during the whole project. Also, i

Back in the day, we had to write floating point routines before there was 80387. We had the appropriate chapter of TAOCP open during the whole project. Also, if you read Programmers at work, it was the knowledge of the one rarely taken step in the long division algorithm that enabled one of the subjects to debug a process that had no tools.