## 9.3.63 IBITS (I, POS, LEN)

Description: | Extracts a sequence of bits (a bit field).
Class: | Elemental function; Generic
Arguments: | I | Must be of type integer.
| POS | Must be of type integer. It must not be negative and POS + LEN must be less than or equal to BIT_SIZE (I). The rightmost (least significant) bit of I is in position 0.
| LEN | Must be of type integer. It must not be negative.
Results: | The result type is the same as I. The result has the value of the sequence of LEN bits in I, beginning at POS right-adjusted and with all other bits zero. For more information on bit functions, see Section 9.2.3. The model for the interpretation of an integer value as a sequence of bits is shown in Section D.3.

Specific Name | Argument Type | Result Type
--- | --- | ---
| INTEGER(1) | INTEGER(1)
IIBITS | INTEGER(2) | INTEGER(2)
JIBITS | INTEGER(4) | INTEGER(4)
KIBITS | INTEGER(8) | INTEGER(8)

Examples

IBITS (12, 1, 4) has the value 6.

IBITS (10, 1, 7) has the value 5.

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