Exam 10: Computer Arithmetic

A __________ is one in which the most significant digit of the significand is nonzero.

_________ are included in IEEE 754 to handle cases of exponent underflow.

Negative numbers greater than 2-127 are called _________.

IEEE 754-2008 defines an __________ format as a format with a precision and range that are defined under user control.

For base 2 representation,a normal number is one in which the most significant bit of the significand is zero.

The register contains additional bits,called __________,which are used to pad out the right end of the significand with 0s.

Although considered obsolete,the term _________ is sometimes used instead of significand.

If two numbers are added,and they are both positive or both negative,then _________ occurs if and only if the result has the opposite sign.

Booth's algorithm performs more additions and subtractions than a straightforward algorithm.

________ is when the result may be larger than can be held in the word size being used.

One of the trade-offs of floating-point math is that many calculations produce results that are not exact and have to be rounded to the nearest value that the notation can represent.

Extending the range of numbers that can be expressed by increasing the bit length is referred to as __________.

Moving the sign bit to the new leftmost position and filling in with copies of the sign bit is called _________.

__________ representation is almost universally used as the processor representation for integers.

Positive numbers greater than (2 - 2-23)x 2-128 are called _________.

An advantage of biased representation is that nonnegative floating-point numbers can be treated as integers for comparison purposes.

For each 1 on the multiplier,an add and a shift operation are required; but for each 0 only a shift is required.

Negative numbers less than -(2 - 2-23)x 2 128 are called _________.

The most common scheme in implementing the integer portion of the ALU is:

Actual floating-point representations include a special bit pattern to designate zero.