HP Fortran Programmer's Reference (September 2007)

Intrinsic procedures
Data representation models
Chapter 11 509
The Integer Number System Model
The integer number system is modeled by:
where
i is the integer value.
s is the sign (+1 or –1).
r is the radix given by the intrinsic function RADIX (always 2 for HP systems).
q is the number of digits (integer greater than 0), given by the intrinsic
function DIGITS.
d is the k th digit and is an integer 0 <= d < r . The digits are numbered left to
right, beginning with 1.
The Real Number System Model
The real number system is modeled by:
where
x is the real value.
is d
k
r
k
k0=
q1–
∑
=
xsb
e
f
k
b
k–
k1=
p
∑
=