HP Fortran Programmer's Reference (September 2007)

Intrinsic procedures
Data representation models
Chapter 11510
s is the sign (+1 or –1).
b is the base (real radix) and is an integer greater than 1, given by the
intrinsic function RADIX (always 2 for HP systems).
e is an integer between some minimum value ( lmin ) and maximum value
( lmax ), given by the intrinsic functions MINEXPONENT and MAXEXPONENT.
p is the number of mantissa digits and is an integer greater than 1, given by
the intrinsic function DIGITS.
f
k
is the k th digit and is an integer 0 <= f
k
< b , but f
1
may be zero only if all
the f
k
are zero. The digits are numbered left to right, beginning with 1.