IBITS — Bit extraction#

IBITS()#

IBITS extracts a field of length LEN from I, starting from bit position POS and extending left for LEN bits. The result is right-justified and the remaining bits are zeroed. The value of POS+LEN must be less than or equal to the value BIT_SIZE(I).

Parameters:

I – The type shall be INTEGER.
POS – The type shall be INTEGER.
LEN – The type shall be INTEGER.

Returns:

The return value is of type INTEGER and of the same kind as I.

Standard:

Fortran 90 and later, has overloads that are GNU extensions

Class:

Elemental function

Syntax:

RESULT = IBITS(I, POS, LEN)

Specific names:

Name	Argument	Return type	Standard
`IBITS(A)`	`INTEGER A`	`INTEGER`	Fortran 90 and later
`BBITS(A)`	`INTEGER(1) A`	`INTEGER(1)`	GNU extension
`IIBITS(A)`	`INTEGER(2) A`	`INTEGER(2)`	GNU extension
`JIBITS(A)`	`INTEGER(4) A`	`INTEGER(4)`	GNU extension
`KIBITS(A)`	`INTEGER(8) A`	`INTEGER(8)`	GNU extension