Intel Fortran Language Reference - NCI National Facility

9 Intel Fortran Language Reference
The model for the interpretation of an integer value as a sequence of bits is
shown in “Model for Bit Data”.
Specific Name Argument Type Result Type
BIEOR 1
IIEOR 2
JIEOR 3
KIEOR 4
INTEGER(1)
INTEGER(2)
INTEGER(4)
INTEGER(8)
1. Or BIXOR
2. Or HIEOR, HIXOR, or IIXOR
3. Or JIXOR
4. For compatibility, this specific function can also be specified as IXOR.
INTEGER(1)
INTEGER(2)
INTEGER(4)
INTEGER(8)
Example
IEOR (12, 7) has the value 11; binary 1100 exclusive OR with binary 0111 is binary 1011.
ILEN
Description:
Syntax:
Class:
Arguments:
Results:
Returns the length (in bits) of the two’s complement representation of an integer.
result = ILEN (i)
Elemental function; Generic
i must be of type integer.
The result type is the same as i. The result value is (LOG 2 ( I + 1 )) if i is not
negative; otherwise, the result value is (LOG 2 ( –I )).
Examples
ILEN (4) has the value 3.
ILEN (–4) has the value 2.
INDEX
Description:
Syntax:
Class:
Arguments:
Returns the starting position of a substring within a string.
result = INDEX (string, substring [, back] [, kind])
Elemental function; Generic
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