Abstract: A package receiving and storage apparatus includes a takeoff and landing section; a package receiving section; a storage section; a retrieval section at which the first package stored in the storage section is retrievable; a transport device configured to transport the package between the package receiving section, the storage section, and the retrieval section; and a gas spray device installed at the package receiving section or in a package transport path extending from the package receiving section to the storage section, and configured to spray a gas onto the first package to remove foreign matter adhering to the first package.

Abstract: A post-normalizing unit for use in a floating-point arithmetic circuit having a pre-normalizing unit for carrying out a pre-normalization operation on first and second exponent parts and first and second fraction parts to produce a maximum exponent part and first and second pre-normalized fraction parts, an arithmetic unit for carrying out an arithmetic operation on the first and the second pre-normalized fraction parts to produce an operated fraction part, and first and second shift count calculating circuits calculate first and second shift counts for use in normalizing the operated fraction part with an input cardinal number regarded as first and second cardinal numbers, respectively. Supplied with the operated fraction part, first and second shifters left-shift the operated fraction part on the basis of the first and the second shift counts to produce first and second shifted fraction parts, respectively.