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Motorola CPU32 Reference Manual page 255

M68300 series central processor unit

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Summing, the following result is obtained:

Now, using the same TLI results, the sum is first calculated and then rounded

according to the same algorithm:

Rounding yields:

0010 0000. 0111 0000

0011 1111. 0111 0000

0000 0001 . 0111 0000

0110 0001 . 0101 0000

The second result is preferred. The following code sequence illustrates how

addition of a series of table interpolations can be performed without loss of

precision in the intermediate results:

Long addition avoids problems with carry

Move radix point

Fraction MSB in carry

INSTRUCTION SET

CPU32 REFERENCE MANUAL