C_SIZEOF — Size in bytes of an expression
C_SIZEOF(X)calculates the number of bytes of storage the expression
Inquiry function of the module
N = C_SIZEOF(X)
X The argument shall be an interoperable data entity.
- Return value:
The return value is of type integer and of the system-dependent kind
ISO_C_BINDINGmodule). Its value is the number of bytes occupied by the argument. If the argument has the
POINTERattribute, the number of bytes of the storage area pointed to is returned. If the argument is of a derived type with
ALLOCATABLEcomponents, the return value does not account for the sizes of the data pointed to by these components.
use iso_c_binding integer(c_int) :: i real(c_float) :: r, s(5) print *, (c_sizeof(s)/c_sizeof(r) == 5) end
The example will print
.TRUE.unless you are using a platform where default
REALvariables are unusually padded.
- See also: