HP-UX Floating-Point Guide

Chapter 2 49
Floating-Point Principles and the IEEE Standard for Binary Floating-Point Arithmetic
Floating-Point Formats
Table 2-6 IEEE Single-Precision Value Summary (Hexadecimal Values)
Value Exponent Fraction
Hexadecimal Values
(Single-Precision)
Positive Negative
Zero All zeros All zeros 0000 0000 8000 0000
Denormalized All zeros Nonzero 0000 0001
to
007F FFFF
8000 0001
to
807F FFFF
Normalized Neither all
zeros nor all
ones
Anything 0080 0000
to
7F7F FFFF
8080 0000
to
FF7F FFFF
Infinity All ones All zeros 7F80 0000 FF80 0000
Quiet NaN All ones Most
significant bit
0
7F80 0001
to
7FBF FFFF
FF80 0001
to
FFBF FFFF
Signaling NaN All ones Most
significant bit
1
7FC0 0000
to
7FFF FFFF
FFC0 0000
to
FFFF FFFF