HP Fortran Programmer's Reference (September 2007)

Intrinsic procedures

Intrinsic procedure speciﬁcations

Chapter 11 559

Speciﬁc forms

BBCLR, HBCLR, IIBCLR, JIBCLR, KIBCLR.

IBITS(I, POS, LEN)

Description

Extracts a sequence of bits.

Class

Elemental function.

Arguments

I must be of type integer.

POS must be of type integer. It must be nonnegative and POS + LEN must be less

than or equal to BIT_SIZE(I).

LEN must be of type integer and nonnegative.

Result type/

type parameters

Same as I.

Result value

The result has the value of the sequence of LEN bits in I beginning at bit POS, right-adjusted

and with all other bits zero. The model for the interpretation of an integer value as a sequence

of bits is in “The Bit Model” on page 508.

Speciﬁc forms

BBITS, HBITS, IIBITS, JIBITS, KIBITS.

IBSET(I, POS)

Description

Sets a bit to one.