Texas Instruments TMS320C3x - Manual (Page 136)

Floating-Point Multiplication
5-31 Data Formats and Floating-Point Operation
Example 5–11. Floating-Point Multiply Between Positive and Negative Numbers
Let:
α
= 1.0 x 2
α
( exp) = 01.00000000000000000000000 x 2
α
( exp)
b = –2.0 x 2 b(exp) = 10.00000000000000000000000 x 2 b(exp)
Then:
01.00000000000000000000000
×
2
α
( exp)
x 10.00000000000000000000000
×
2 b(exp)
1110.0000000000000000000000000000000000000000000000
×
2 (
α
( exp) + b(exp))
The result is: c = – 2.0 x 2 (
α
( exp) + b(exp))
Example 5–12. Floating-Point Multiply by 0
All multiplications by a floating-point 0 yield a result of 0 ( f = 0, s = 0, and
exp = –128).