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8.52 BIT_SIZE — Bit size inquiry function ¶

Synopsis:

RESULT = BIT_SIZE(I)

Description:

BIT_SIZE(I) returns the number of bits (for integers, the precision plus the sign bit) represented by the type of I. The result of BIT_SIZE(I) is independent of the actual value of I.

Class:

Inquiry function

Arguments:

I	The type shall be INTEGER or UNSIGNED.

Return value:

The return value is of type INTEGER

Example:

program test_bit_size
    integer :: i = 123
    integer :: size
    size = bit_size(i)
    print *, size
end program test_bit_size

Standard:

Fortran 90 and later, extension for UNSIGNED (see Unsigned integers)