HP Fortran Programmer's Reference (September 2007)

Intrinsic procedures

Data representation models

Chapter 11508

The Bit Model

The bit model interprets a nonnegative scalar data object

of type integer as a sequence of

binary digits (bits), based upon the model:

where

is the number of bits, given by the intrinsic function BIT_SIZE and each

has a bit

value of 0 or 1. The bits are numbered from right to left beginning with 0.

“PRECISION(X)” on page 603 Decimal precision in real model for X

“RADIX(X)” on page 607 Base (radix) in integer or real model for X

“RANGE(X)” on page 610 Decimal exponent range in integer or real model for

“RRSPACING(X)” on page 615 1/(relative spacing near X)

“SCALE(X, I)” on page 616 X with real model exponent changed by I

“SET_EXPONENT(X, I)” on

page 620

Set the real model exponent of X to I

“SPACING(X)” on page 625 Absolute spacing near X

“TINY(X)” on page 632 Smallest number in real model for X

Table 11-2 Intrinsic functions and data representation models (Continued)

Intrinsic function Description

k0=

n1–

∑