Some info sources on IEEE floating point.

1. ANSI/IEEE STD 754-1985 (IEEE Standard for Binary Floating-Point
Arithmetic) and ANSI/IEEE STD 854-1987 (IEEE Standard for
Radix-Independent Floating-Point Arithmetic), both available from IEEE.

2. David Goldberg, "What Every Computer Scientist Should Know About
Floating-Point Arithmetic", ACM Computing Surveys, Vol. 23, No. 1,
March 1991, pp. 5-48.